USA climate guide

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

Sunshine & Daylight 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

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

More climate for USA

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

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The climate guide for USA, represented by 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.

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

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