Allentown weather by month

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

Temperature in Allentown (°F)

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Max temperature (daytime)
36°F maximum daytime temperature in January in Allentown36
37°F maximum daytime temperature in February in Allentown37
50°F maximum daytime temperature in March in Allentown50
61°F maximum daytime temperature in April in Allentown61
72°F maximum daytime temperature in May in Allentown72
81°F maximum daytime temperature in June in Allentown81
84°F maximum daytime temperature in July in Allentown84
82°F maximum daytime temperature in August in Allentown82
75°F maximum daytime temperature in September in Allentown75
64°F maximum daytime temperature in October in Allentown64
52°F maximum daytime temperature in November in Allentown52
39°F maximum daytime temperature in December in Allentown39
Min temperature (night-time)
19°F minimum night-time temperature in January in Allentown19
21°F minimum night-time temperature in February in Allentown21
30°F minimum night-time temperature in March in Allentown30
39°F minimum night-time temperature in April in Allentown39
48°F minimum night-time temperature in May in Allentown48
59°F minimum night-time temperature in June in Allentown59
63°F minimum night-time temperature in July in Allentown63
61°F minimum night-time temperature in August in Allentown61
54°F minimum night-time temperature in September in Allentown54
43°F minimum night-time temperature in October in Allentown43
34°F minimum night-time temperature in November in Allentown34
25°F minimum night-time temperature in December in Allentown25
Heat & Humidity
No heat & humidity in January in Allentown0
No heat & humidity in February in Allentown0
No heat & humidity in March in Allentown0
No heat & humidity in April in Allentown0
No heat & humidity in May in Allentown0
Low heat & humidity in June in AllentownL
Moderate heat & humidity in July in AllentownM
Moderate heat & humidity in August in AllentownM
No heat & humidity in September in Allentown0
No heat & humidity in October in Allentown0
No heat & humidity in November in Allentown0
No heat & humidity in December in Allentown0

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

Sunshine & Daylight in Allentown

  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 Allentown10
11 hours of daylight per day in February in Allentown11
12 hours of daylight per day in March in Allentown12
13 hours of daylight per day in April in Allentown13
14 hours of daylight per day in May in Allentown14
15 hours of daylight per day in June in Allentown15
15 hours of daylight per day in July in Allentown15
14 hours of daylight per day in August in Allentown14
12 hours of daylight per day in September in Allentown12
11 hours of daylight per day in October in Allentown11
10 hours of daylight per day in November in Allentown10
9 hours of daylight per day in December in Allentown9
UV Index (Maximum)
UV (maximum) index 2 (Low) in January in Allentown2
UV (maximum) index 3 (Moderate) in February in Allentown3
UV (maximum) index 4 (Moderate) in March in Allentown4
UV (maximum) index 6 (High) in April in Allentown6
UV (maximum) index 7 (High) in May in Allentown7
UV (maximum) index 9 (Very High) in June in Allentown9
UV (maximum) index 9 (Very High) in July in Allentown9
UV (maximum) index 8 (Very High) in August in Allentown8
UV (maximum) index 6 (High) in September in Allentown6
UV (maximum) index 4 (Moderate) in October in Allentown4
UV (maximum) index 2 (Low) in November in Allentown2
UV (maximum) index 1 (Low) in December in Allentown1

Rainfall in Allentown

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Number of days with some rain
11 days with some rainfall in January in Allentown11
10 days with some rainfall in February in Allentown10
11 days with some rainfall in March in Allentown11
11 days with some rainfall in April in Allentown11
12 days with some rainfall in May in Allentown12
11 days with some rainfall in June in Allentown11
10 days with some rainfall in July in Allentown10
10 days with some rainfall in August in Allentown10
9 days with some rainfall in September in Allentown9
8 days with some rainfall in October in Allentown8
11 days with some rainfall in November in Allentown11
11 days with some rainfall in December in Allentown11
Average monthly rainfall (inches)
3.3 inches monthly rainfall in January in Allentown3.3
3.0 inches monthly rainfall in February in Allentown3.0
3.5 inches monthly rainfall in March in Allentown3.5
3.7 inches monthly rainfall in April in Allentown3.7
4.3 inches monthly rainfall in May in Allentown4.3
3.8 inches monthly rainfall in June in Allentown3.8
4.3 inches monthly rainfall in July in Allentown4.3
4.3 inches monthly rainfall in August in Allentown4.3
4.0 inches monthly rainfall in September in Allentown4.0
3.1 inches monthly rainfall in October in Allentown3.1
3.9 inches monthly rainfall in November in Allentown3.9
3.6 inches monthly rainfall in December in Allentown3.6

More about Allentown

Allentown by month

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

Recommended for Pennsylvania

KLM: Low fares on long haul from £339 return

  • Save on return flights to worldwide destinations
  • Book flights to Abu Dhabi, Jo'burg, Tokyo & more
  • Plus more flights to the Americas, Middle East & Europe
Go to KLM deal >>

View all KLM offers

The climate guide for Pennsylvania (Allentown) 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.

What's the climate like in Allentown?

Allentown has a cold climate with hot summers and some rainfall in all months.

Metric (°C)  |  Imperial (°F)

Back to top

Tropical storm risk: Allentown, Pennsylvania hurricane season

% of month affected by tropical storms
0
0
0
0
0
0
0
1.1%
1.6%
0
0
0
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

TUI: up to 7% off holidays booked online

  • Book online with TUI & save up to 7% on holidays
  • FREE child places available for select holidays
  • Pay £0 deposits with direct debit & spread the cost
Go to TUI deal >>

View all TUI offers

TUITUI deal finder

Back to top

More about the USA

Compare Allentown with the USA

Below the Allentown chart shows average maximum daytime temperature for Allentown, Pennsylvania, USA and the USA (Washington).

Maximum daytime temperature (°F)

Allentown, Pennsylvania, USA
USA (Washington)
36
41
37
45
50
55
61
66
72
75
81
84
84
88
82
86
75
79
64
68
52
57
39
46
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Metric (°C)  |  Imperial (°F)

Compare more Allentown weather >>

Back to top

Related posts

Popular travel offers

Explore holidays in the sun for less

More holidays

Airport parking

More parking

Airport lounges

More lounges

Top ^