Philadelphia weather by month

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

Temperature in Philadelphia (°C)

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Max temperature (daytime)
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
Min temperature (night-time)
-5°C minimum night-time temperature in January in Philadelphia-5
-4°C minimum night-time temperature in February in Philadelphia-4
1°C minimum night-time temperature in March in Philadelphia1
5°C minimum night-time temperature in April in Philadelphia5
11°C minimum night-time temperature in May in Philadelphia11
16°C minimum night-time temperature in June in Philadelphia16
19°C minimum night-time temperature in July in Philadelphia19
19°C minimum night-time temperature in August in Philadelphia19
14°C minimum night-time temperature in September in Philadelphia14
8°C minimum night-time temperature in October in Philadelphia8
3°C minimum night-time temperature in November in Philadelphia3
-2°C minimum night-time temperature in December in Philadelphia-2
Heat & Humidity
No heat & humidity in January in Philadelphia0
No heat & humidity in February in Philadelphia0
No heat & humidity in March in Philadelphia0
No heat & humidity in April in Philadelphia0
No heat & humidity in May in Philadelphia0
Low heat & humidity in June in PhiladelphiaL
High heat & humidity in July in PhiladelphiaH
Moderate heat & humidity in August in PhiladelphiaM
No heat & humidity in September in Philadelphia0
No heat & humidity in October in Philadelphia0
No heat & humidity in November in Philadelphia0
No heat & humidity in December in Philadelphia0

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

Sunshine & Daylight in Philadelphia

  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 Philadelphia10
11 hours of daylight per day in February in Philadelphia11
12 hours of daylight per day in March in Philadelphia12
13 hours of daylight per day in April in Philadelphia13
14 hours of daylight per day in May in Philadelphia14
15 hours of daylight per day in June in Philadelphia15
15 hours of daylight per day in July in Philadelphia15
14 hours of daylight per day in August in Philadelphia14
12 hours of daylight per day in September in Philadelphia12
11 hours of daylight per day in October in Philadelphia11
10 hours of daylight per day in November in Philadelphia10
9 hours of daylight per day in December in Philadelphia9
UV Index (Maximum)
UV (maximum) index 2 (Low) in January in Philadelphia2
UV (maximum) index 3 (Moderate) in February in Philadelphia3
UV (maximum) index 4 (Moderate) in March in Philadelphia4
UV (maximum) index 6 (High) in April in Philadelphia6
UV (maximum) index 8 (Very High) in May in Philadelphia8
UV (maximum) index 9 (Very High) in June in Philadelphia9
UV (maximum) index 9 (Very High) in July in Philadelphia9
UV (maximum) index 8 (Very High) in August in Philadelphia8
UV (maximum) index 6 (High) in September in Philadelphia6
UV (maximum) index 4 (Moderate) in October in Philadelphia4
UV (maximum) index 2 (Low) in November in Philadelphia2
UV (maximum) index 2 (Low) in December in Philadelphia2

Rainfall in Philadelphia

  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 Philadelphia11
10 days with some rainfall in February in Philadelphia10
10 days with some rainfall in March in Philadelphia10
11 days with some rainfall in April in Philadelphia11
11 days with some rainfall in May in Philadelphia11
10 days with some rainfall in June in Philadelphia10
9 days with some rainfall in July in Philadelphia9
9 days with some rainfall in August in Philadelphia9
8 days with some rainfall in September in Philadelphia8
8 days with some rainfall in October in Philadelphia8
10 days with some rainfall in November in Philadelphia10
11 days with some rainfall in December in Philadelphia11
Average monthly rainfall (mm)
84 mm monthly rainfall in January in Philadelphia84
73 mm monthly rainfall in February in Philadelphia73
92 mm monthly rainfall in March in Philadelphia92
95 mm monthly rainfall in April in Philadelphia95
100 mm monthly rainfall in May in Philadelphia100
96 mm monthly rainfall in June in Philadelphia96
111 mm monthly rainfall in July in Philadelphia111
102 mm monthly rainfall in August in Philadelphia102
91 mm monthly rainfall in September in Philadelphia91
73 mm monthly rainfall in October in Philadelphia73
89 mm monthly rainfall in November in Philadelphia89
90 mm monthly rainfall in December in Philadelphia90

More about Philadelphia

Philadelphia by month

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

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The climate guide for Pennsylvania (Philadelphia) 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 Philadelphia?

Philadelphia has a temperate climate with hot summers and some rainfall in all months.

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

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Tropical storm risk: Philadelphia, Pennsylvania hurricane season

% of month affected by tropical storms
0
0
0
0
0
0
0
1.3%
1.9%
0
0
0
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

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More about the USA

Compare Philadelphia with the USA

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

Maximum daytime temperature (°C)

Philadelphia, Pennsylvania, USA
USA (Washington)
3
5
5
7
11
13
17
19
23
24
28
29
30
31
29
30
25
26
19
20
13
14
6
8
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

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

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