Allentown climate guide

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Temperature in Allentown (°C)

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Max temperature (daytime)
2°C maximum daytime temperature in January in Allentown2
3°C maximum daytime temperature in February in Allentown3
10°C maximum daytime temperature in March in Allentown10
16°C maximum daytime temperature in April in Allentown16
22°C maximum daytime temperature in May in Allentown22
27°C maximum daytime temperature in June in Allentown27
29°C maximum daytime temperature in July in Allentown29
28°C maximum daytime temperature in August in Allentown28
24°C maximum daytime temperature in September in Allentown24
18°C maximum daytime temperature in October in Allentown18
11°C maximum daytime temperature in November in Allentown11
4°C maximum daytime temperature in December in Allentown4
Min temperature (night-time)
-7°C minimum night-time temperature in January in Allentown-7
-6°C minimum night-time temperature in February in Allentown-6
-1°C minimum night-time temperature in March in Allentown-1
4°C minimum night-time temperature in April in Allentown4
9°C minimum night-time temperature in May in Allentown9
15°C minimum night-time temperature in June in Allentown15
17°C minimum night-time temperature in July in Allentown17
16°C minimum night-time temperature in August in Allentown16
12°C minimum night-time temperature in September in Allentown12
6°C minimum night-time temperature in October in Allentown6
1°C minimum night-time temperature in November in Allentown1
-4°C minimum night-time temperature in December in Allentown-4

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

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 (mm)
83 mm monthly rainfall in January in Allentown83
75 mm monthly rainfall in February in Allentown75
89 mm monthly rainfall in March in Allentown89
93 mm monthly rainfall in April in Allentown93
108 mm monthly rainfall in May in Allentown108
96 mm monthly rainfall in June in Allentown96
109 mm monthly rainfall in July in Allentown109
110 mm monthly rainfall in August in Allentown110
101 mm monthly rainfall in September in Allentown101
78 mm monthly rainfall in October in Allentown78
100 mm monthly rainfall in November in Allentown100
91 mm monthly rainfall in December in Allentown91

More climate for Allentown

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

What's the climate like in Allentown?

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

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

The climate guide for Allentown, Pennsylvania 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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Below are average maximum temperatures at popular destinations in Pennsylvania for next month - April. Select a destination to see the climate guide for all months of the year.

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