USA weather by month

Check out the USA weather averages by month. Compare detailed monthly climate statistics including temperature, rainfall and sunshine figures.

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Maximum daytime temperature °C
5°C maximum daytime temperature in January in Washington5
7°C maximum daytime temperature in February in Washington7
13°C maximum daytime temperature in March in Washington13
19°C maximum daytime temperature in April in Washington19
24°C maximum daytime temperature in May in Washington24
29°C maximum daytime temperature in June in Washington29
31°C maximum daytime temperature in July in Washington31
30°C maximum daytime temperature in August in Washington30
26°C maximum daytime temperature in September in Washington26
20°C maximum daytime temperature in October in Washington20
14°C maximum daytime temperature in November in Washington14
8°C maximum daytime temperature in December in Washington8
Hours of sunshine (daily)
Days with some rainfall
10 days with some rainfall in January in Washington10
10 days with some rainfall in February in Washington10
10 days with some rainfall in March in Washington10
10 days with some rainfall in April in Washington10
11 days with some rainfall in May in Washington11
10 days with some rainfall in June in Washington10
10 days with some rainfall in July in Washington10
9 days with some rainfall in August in Washington9
7 days with some rainfall in September in Washington7
7 days with some rainfall in October in Washington7
9 days with some rainfall in November in Washington9
9 days with some rainfall in December in Washington9

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USA by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

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The climate guide for USA (Washington) shows long term monthly weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

USA temperature by month

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Alaska
-6°C maximum daytime temperature in January in Alaska-6
-3°C maximum daytime temperature in February in Alaska-3
0°C maximum daytime temperature in March in Alaska0
6°C maximum daytime temperature in April in Alaska6
12°C maximum daytime temperature in May in Alaska12
16°C maximum daytime temperature in June in Alaska16
19°C maximum daytime temperature in July in Alaska19
17°C maximum daytime temperature in August in Alaska17
13°C maximum daytime temperature in September in Alaska13
5°C maximum daytime temperature in October in Alaska5
-3°C maximum daytime temperature in November in Alaska-3
-6°C maximum daytime temperature in December in Alaska-6
California
20°C maximum daytime temperature in January in California20
20°C maximum daytime temperature in February in California20
21°C maximum daytime temperature in March in California21
22°C maximum daytime temperature in April in California22
23°C maximum daytime temperature in May in California23
26°C maximum daytime temperature in June in California26
29°C maximum daytime temperature in July in California29
30°C maximum daytime temperature in August in California30
28°C maximum daytime temperature in September in California28
26°C maximum daytime temperature in October in California26
22°C maximum daytime temperature in November in California22
20°C maximum daytime temperature in December in California20
Florida
24°C maximum daytime temperature in January in Florida24
24°C maximum daytime temperature in February in Florida24
25°C maximum daytime temperature in March in Florida25
27°C maximum daytime temperature in April in Florida27
29°C maximum daytime temperature in May in Florida29
30°C maximum daytime temperature in June in Florida30
31°C maximum daytime temperature in July in Florida31
31°C maximum daytime temperature in August in Florida31
31°C maximum daytime temperature in September in Florida31
29°C maximum daytime temperature in October in Florida29
27°C maximum daytime temperature in November in Florida27
24°C maximum daytime temperature in December in Florida24
Hawaii
26°C maximum daytime temperature in January in Hawaii26
26°C maximum daytime temperature in February in Hawaii26
26°C maximum daytime temperature in March in Hawaii26
27°C maximum daytime temperature in April in Hawaii27
28°C maximum daytime temperature in May in Hawaii28
29°C maximum daytime temperature in June in Hawaii29
29°C maximum daytime temperature in July in Hawaii29
30°C maximum daytime temperature in August in Hawaii30
30°C maximum daytime temperature in September in Hawaii30
29°C maximum daytime temperature in October in Hawaii29
28°C maximum daytime temperature in November in Hawaii28
26°C maximum daytime temperature in December in Hawaii26
Washington D.C.
5°C maximum daytime temperature in January in Washington D.C.5
7°C maximum daytime temperature in February in Washington D.C.7
13°C maximum daytime temperature in March in Washington D.C.13
19°C maximum daytime temperature in April in Washington D.C.19
24°C maximum daytime temperature in May in Washington D.C.24
29°C maximum daytime temperature in June in Washington D.C.29
31°C maximum daytime temperature in July in Washington D.C.31
30°C maximum daytime temperature in August in Washington D.C.30
26°C maximum daytime temperature in September in Washington D.C.26
20°C maximum daytime temperature in October in Washington D.C.20
14°C maximum daytime temperature in November in Washington D.C.14
8°C maximum daytime temperature in December in Washington D.C.8
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Atlanta
10°C maximum daytime temperature in January in Atlanta10
13°C maximum daytime temperature in February in Atlanta13
18°C maximum daytime temperature in March in Atlanta18
23°C maximum daytime temperature in April in Atlanta23
26°C maximum daytime temperature in May in Atlanta26
30°C maximum daytime temperature in June in Atlanta30
31°C maximum daytime temperature in July in Atlanta31
31°C maximum daytime temperature in August in Atlanta31
28°C maximum daytime temperature in September in Atlanta28
23°C maximum daytime temperature in October in Atlanta23
17°C maximum daytime temperature in November in Atlanta17
12°C maximum daytime temperature in December in Atlanta12
Boston
1°C maximum daytime temperature in January in Boston1
3°C maximum daytime temperature in February in Boston3
8°C maximum daytime temperature in March in Boston8
14°C maximum daytime temperature in April in Boston14
20°C maximum daytime temperature in May in Boston20
25°C maximum daytime temperature in June in Boston25
28°C maximum daytime temperature in July in Boston28
27°C maximum daytime temperature in August in Boston27
23°C maximum daytime temperature in September in Boston23
17°C maximum daytime temperature in October in Boston17
11°C maximum daytime temperature in November in Boston11
4°C maximum daytime temperature in December in Boston4
Chicago
-1°C maximum daytime temperature in January in Chicago-1
1°C maximum daytime temperature in February in Chicago1
8°C maximum daytime temperature in March in Chicago8
15°C maximum daytime temperature in April in Chicago15
21°C maximum daytime temperature in May in Chicago21
27°C maximum daytime temperature in June in Chicago27
29°C maximum daytime temperature in July in Chicago29
28°C maximum daytime temperature in August in Chicago28
24°C maximum daytime temperature in September in Chicago24
17°C maximum daytime temperature in October in Chicago17
9°C maximum daytime temperature in November in Chicago9
2°C maximum daytime temperature in December in Chicago2
Denver
6°C maximum daytime temperature in January in Denver6
8°C maximum daytime temperature in February in Denver8
11°C maximum daytime temperature in March in Denver11
17°C maximum daytime temperature in April in Denver17
22°C maximum daytime temperature in May in Denver22
27°C maximum daytime temperature in June in Denver27
31°C maximum daytime temperature in July in Denver31
30°C maximum daytime temperature in August in Denver30
25°C maximum daytime temperature in September in Denver25
19°C maximum daytime temperature in October in Denver19
12°C maximum daytime temperature in November in Denver12
7°C maximum daytime temperature in December in Denver7
Grand Canyon
8°C maximum daytime temperature in January in Grand Canyon8
11°C maximum daytime temperature in February in Grand Canyon11
14°C maximum daytime temperature in March in Grand Canyon14
19°C maximum daytime temperature in April in Grand Canyon19
25°C maximum daytime temperature in May in Grand Canyon25
31°C maximum daytime temperature in June in Grand Canyon31
33°C maximum daytime temperature in July in Grand Canyon33
32°C maximum daytime temperature in August in Grand Canyon32
28°C maximum daytime temperature in September in Grand Canyon28
22°C maximum daytime temperature in October in Grand Canyon22
14°C maximum daytime temperature in November in Grand Canyon14
9°C maximum daytime temperature in December in Grand Canyon9
Las Vegas
14°C maximum daytime temperature in January in Las Vegas14
18°C maximum daytime temperature in February in Las Vegas18
21°C maximum daytime temperature in March in Las Vegas21
25°C maximum daytime temperature in April in Las Vegas25
31°C maximum daytime temperature in May in Las Vegas31
37°C maximum daytime temperature in June in Las Vegas37
41°C maximum daytime temperature in July in Las Vegas41
39°C maximum daytime temperature in August in Las Vegas39
35°C maximum daytime temperature in September in Las Vegas35
28°C maximum daytime temperature in October in Las Vegas28
20°C maximum daytime temperature in November in Las Vegas20
14°C maximum daytime temperature in December in Las Vegas14
Los Angeles
20°C maximum daytime temperature in January in Los Angeles20
20°C maximum daytime temperature in February in Los Angeles20
21°C maximum daytime temperature in March in Los Angeles21
22°C maximum daytime temperature in April in Los Angeles22
23°C maximum daytime temperature in May in Los Angeles23
26°C maximum daytime temperature in June in Los Angeles26
29°C maximum daytime temperature in July in Los Angeles29
30°C maximum daytime temperature in August in Los Angeles30
28°C maximum daytime temperature in September in Los Angeles28
26°C maximum daytime temperature in October in Los Angeles26
22°C maximum daytime temperature in November in Los Angeles22
20°C maximum daytime temperature in December in Los Angeles20
Miami
24°C maximum daytime temperature in January in Miami24
24°C maximum daytime temperature in February in Miami24
25°C maximum daytime temperature in March in Miami25
27°C maximum daytime temperature in April in Miami27
29°C maximum daytime temperature in May in Miami29
30°C maximum daytime temperature in June in Miami30
31°C maximum daytime temperature in July in Miami31
31°C maximum daytime temperature in August in Miami31
31°C maximum daytime temperature in September in Miami31
29°C maximum daytime temperature in October in Miami29
27°C maximum daytime temperature in November in Miami27
24°C maximum daytime temperature in December in Miami24
Nashville
8°C maximum daytime temperature in January in Nashville8
10°C maximum daytime temperature in February in Nashville10
16°C maximum daytime temperature in March in Nashville16
22°C maximum daytime temperature in April in Nashville22
26°C maximum daytime temperature in May in Nashville26
30°C maximum daytime temperature in June in Nashville30
32°C maximum daytime temperature in July in Nashville32
31°C maximum daytime temperature in August in Nashville31
28°C maximum daytime temperature in September in Nashville28
22°C maximum daytime temperature in October in Nashville22
16°C maximum daytime temperature in November in Nashville16
10°C maximum daytime temperature in December in Nashville10
New Orleans
16°C maximum daytime temperature in January in New Orleans16
18°C maximum daytime temperature in February in New Orleans18
22°C maximum daytime temperature in March in New Orleans22
26°C maximum daytime temperature in April in New Orleans26
29°C maximum daytime temperature in May in New Orleans29
32°C maximum daytime temperature in June in New Orleans32
33°C maximum daytime temperature in July in New Orleans33
32°C maximum daytime temperature in August in New Orleans32
30°C maximum daytime temperature in September in New Orleans30
27°C maximum daytime temperature in October in New Orleans27
22°C maximum daytime temperature in November in New Orleans22
18°C maximum daytime temperature in December in New Orleans18
New York City
3°C maximum daytime temperature in January in New York City3
4°C maximum daytime temperature in February in New York City4
9°C maximum daytime temperature in March in New York City9
16°C maximum daytime temperature in April in New York City16
21°C maximum daytime temperature in May in New York City21
26°C maximum daytime temperature in June in New York City26
29°C maximum daytime temperature in July in New York City29
28°C maximum daytime temperature in August in New York City28
24°C maximum daytime temperature in September in New York City24
18°C maximum daytime temperature in October in New York City18
12°C maximum daytime temperature in November in New York City12
6°C maximum daytime temperature in December in New York City6
Orlando
21°C maximum daytime temperature in January in Orlando21
22°C maximum daytime temperature in February in Orlando22
25°C maximum daytime temperature in March in Orlando25
28°C maximum daytime temperature in April in Orlando28
31°C maximum daytime temperature in May in Orlando31
32°C maximum daytime temperature in June in Orlando32
33°C maximum daytime temperature in July in Orlando33
33°C maximum daytime temperature in August in Orlando33
32°C maximum daytime temperature in September in Orlando32
29°C maximum daytime temperature in October in Orlando29
25°C maximum daytime temperature in November in Orlando25
23°C maximum daytime temperature in December in Orlando23
Philadelphia
3°C maximum daytime temperature in January in Philadelphia3
5°C maximum daytime temperature in February in Philadelphia5
11°C maximum daytime temperature in March in Philadelphia11
17°C maximum daytime temperature in April in Philadelphia17
23°C maximum daytime temperature in May in Philadelphia23
28°C maximum daytime temperature in June in Philadelphia28
30°C maximum daytime temperature in July in Philadelphia30
29°C maximum daytime temperature in August in Philadelphia29
25°C maximum daytime temperature in September in Philadelphia25
19°C maximum daytime temperature in October in Philadelphia19
13°C maximum daytime temperature in November in Philadelphia13
6°C maximum daytime temperature in December in Philadelphia6
San Francisco
13°C maximum daytime temperature in January in San Francisco13
16°C maximum daytime temperature in February in San Francisco16
16°C maximum daytime temperature in March in San Francisco16
17°C maximum daytime temperature in April in San Francisco17
18°C maximum daytime temperature in May in San Francisco18
19°C maximum daytime temperature in June in San Francisco19
20°C maximum daytime temperature in July in San Francisco20
20°C maximum daytime temperature in August in San Francisco20
22°C maximum daytime temperature in September in San Francisco22
21°C maximum daytime temperature in October in San Francisco21
17°C maximum daytime temperature in November in San Francisco17
14°C maximum daytime temperature in December in San Francisco14
Seattle
7°C maximum daytime temperature in January in Seattle7
10°C maximum daytime temperature in February in Seattle10
12°C maximum daytime temperature in March in Seattle12
14°C maximum daytime temperature in April in Seattle14
18°C maximum daytime temperature in May in Seattle18
21°C maximum daytime temperature in June in Seattle21
24°C maximum daytime temperature in July in Seattle24
24°C maximum daytime temperature in August in Seattle24
21°C maximum daytime temperature in September in Seattle21
16°C maximum daytime temperature in October in Seattle16
11°C maximum daytime temperature in November in Seattle11
8°C maximum daytime temperature in December in Seattle8

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USA weather averages by month

Temperature in USA (°C)

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Max temperature (daytime)
5°C maximum daytime temperature in January in USA (Washington)5
7°C maximum daytime temperature in February in USA (Washington)7
13°C maximum daytime temperature in March in USA (Washington)13
19°C maximum daytime temperature in April in USA (Washington)19
24°C maximum daytime temperature in May in USA (Washington)24
29°C maximum daytime temperature in June in USA (Washington)29
31°C maximum daytime temperature in July in USA (Washington)31
30°C maximum daytime temperature in August in USA (Washington)30
26°C maximum daytime temperature in September in USA (Washington)26
20°C maximum daytime temperature in October in USA (Washington)20
14°C maximum daytime temperature in November in USA (Washington)14
8°C maximum daytime temperature in December in USA (Washington)8
Min temperature (night-time)
-4°C minimum night-time temperature in January in USA (Washington)-4
-3°C minimum night-time temperature in February in USA (Washington)-3
2°C minimum night-time temperature in March in USA (Washington)2
7°C minimum night-time temperature in April in USA (Washington)7
12°C minimum night-time temperature in May in USA (Washington)12
17°C minimum night-time temperature in June in USA (Washington)17
20°C minimum night-time temperature in July in USA (Washington)20
20°C minimum night-time temperature in August in USA (Washington)20
15°C minimum night-time temperature in September in USA (Washington)15
9°C minimum night-time temperature in October in USA (Washington)9
4°C minimum night-time temperature in November in USA (Washington)4
-1°C minimum night-time temperature in December in USA (Washington)-1
Heat & Humidity
No heat & humidity in January in USA (Washington)0
No heat & humidity in February in USA (Washington)0
No heat & humidity in March in USA (Washington)0
No heat & humidity in April in USA (Washington)0
No heat & humidity in May in USA (Washington)0
Moderate heat & humidity in June in USA (Washington)M
High heat & humidity in July in USA (Washington)H
High heat & humidity in August in USA (Washington)H
Low heat & humidity in September in USA (Washington)L
No heat & humidity in October in USA (Washington)0
No heat & humidity in November in USA (Washington)0
No heat & humidity in December in USA (Washington)0

Note: 0 = None, L = Low, M = Moderate, H = High, VH = Very high, E = Extreme

Sunshine & UV index in USA

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Daily hours of sunshine
Daily hours of daylight
10 hours of daylight per day in January in USA (Washington)10
11 hours of daylight per day in February in USA (Washington)11
12 hours of daylight per day in March in USA (Washington)12
13 hours of daylight per day in April in USA (Washington)13
14 hours of daylight per day in May in USA (Washington)14
15 hours of daylight per day in June in USA (Washington)15
15 hours of daylight per day in July in USA (Washington)15
14 hours of daylight per day in August in USA (Washington)14
12 hours of daylight per day in September in USA (Washington)12
11 hours of daylight per day in October in USA (Washington)11
10 hours of daylight per day in November in USA (Washington)10
9 hours of daylight per day in December in USA (Washington)9
UV Index (Maximum)
UV (maximum) index 2 (Low) in January in USA (Washington)2
UV (maximum) index 3 (Moderate) in February in USA (Washington)3
UV (maximum) index 5 (Moderate) in March in USA (Washington)5
UV (maximum) index 7 (High) in April in USA (Washington)7
UV (maximum) index 8 (Very High) in May in USA (Washington)8
UV (maximum) index 9 (Very High) in June in USA (Washington)9
UV (maximum) index 9 (Very High) in July in USA (Washington)9
UV (maximum) index 8 (Very High) in August in USA (Washington)8
UV (maximum) index 7 (High) in September in USA (Washington)7
UV (maximum) index 4 (Moderate) in October in USA (Washington)4
UV (maximum) index 3 (Moderate) in November in USA (Washington)3
UV (maximum) index 2 (Low) in December in USA (Washington)2

Rainfall in USA

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Number of days with some rain
10 days with some rainfall in January in USA (Washington)10
10 days with some rainfall in February in USA (Washington)10
10 days with some rainfall in March in USA (Washington)10
10 days with some rainfall in April in USA (Washington)10
11 days with some rainfall in May in USA (Washington)11
10 days with some rainfall in June in USA (Washington)10
10 days with some rainfall in July in USA (Washington)10
9 days with some rainfall in August in USA (Washington)9
7 days with some rainfall in September in USA (Washington)7
7 days with some rainfall in October in USA (Washington)7
9 days with some rainfall in November in USA (Washington)9
9 days with some rainfall in December in USA (Washington)9
Average monthly rainfall (mm)
71 mm monthly rainfall in January in USA (Washington)71
70 mm monthly rainfall in February in USA (Washington)70
85 mm monthly rainfall in March in USA (Washington)85
75 mm monthly rainfall in April in USA (Washington)75
96 mm monthly rainfall in May in USA (Washington)96
88 mm monthly rainfall in June in USA (Washington)88
99 mm monthly rainfall in July in USA (Washington)99
103 mm monthly rainfall in August in USA (Washington)103
87 mm monthly rainfall in September in USA (Washington)87
78 mm monthly rainfall in October in USA (Washington)78
83 mm monthly rainfall in November in USA (Washington)83
82 mm monthly rainfall in December in USA (Washington)82

Tropical storm risk: USA, D.C. hurricane season

% of month affected by tropical storms
0
0
0
0
0
0
0
1.2%
2.4%
0
0
0
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Compare USA weather with the UK

The weather chart below compares the average monthly maximum daytime temperature for USA (Washington) and the UK (London).

Maximum daytime temperature (°C)

USA (Washington)
UK (London)
5
7
7
7
13
10
19
13
24
17
29
20
31
22
30
22
26
19
20
15
14
10
8
8
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Metric (°C / mm)  |  Imperial (°F / inches)

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