Pennsylvania weather by month

Check out Pennsylvania 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
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
Hours of sunshine (daily)
Days with some rainfall
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

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More about Pennsylvania

Pennsylvania 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.

Pennsylvania temperature by month

Compare the average temperature by month for popular destinations in Pennsylvania. Select a place from below to see more long term weather averages by month.

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Erie
0°C maximum daytime temperature in January in Erie0
1°C maximum daytime temperature in February in Erie1
6°C maximum daytime temperature in March in Erie6
12°C maximum daytime temperature in April in Erie12
19°C maximum daytime temperature in May in Erie19
24°C maximum daytime temperature in June in Erie24
26°C maximum daytime temperature in July in Erie26
26°C maximum daytime temperature in August in Erie26
22°C maximum daytime temperature in September in Erie22
16°C maximum daytime temperature in October in Erie16
9°C maximum daytime temperature in November in Erie9
3°C maximum daytime temperature in December in Erie3
Gettysburg
3°C maximum daytime temperature in January in Gettysburg3
5°C maximum daytime temperature in February in Gettysburg5
11°C maximum daytime temperature in March in Gettysburg11
17°C maximum daytime temperature in April in Gettysburg17
23°C maximum daytime temperature in May in Gettysburg23
27°C maximum daytime temperature in June in Gettysburg27
30°C maximum daytime temperature in July in Gettysburg30
29°C maximum daytime temperature in August in Gettysburg29
25°C maximum daytime temperature in September in Gettysburg25
18°C maximum daytime temperature in October in Gettysburg18
12°C maximum daytime temperature in November in Gettysburg12
6°C maximum daytime temperature in December in Gettysburg6
Harrisburg
2°C maximum daytime temperature in January in Harrisburg2
4°C maximum daytime temperature in February in Harrisburg4
10°C maximum daytime temperature in March in Harrisburg10
17°C maximum daytime temperature in April in Harrisburg17
22°C maximum daytime temperature in May in Harrisburg22
27°C maximum daytime temperature in June in Harrisburg27
30°C maximum daytime temperature in July in Harrisburg30
29°C maximum daytime temperature in August in Harrisburg29
24°C maximum daytime temperature in September in Harrisburg24
18°C maximum daytime temperature in October in Harrisburg18
11°C maximum daytime temperature in November in Harrisburg11
5°C maximum daytime temperature in December in Harrisburg5
Lancaster
3°C maximum daytime temperature in January in Lancaster3
5°C maximum daytime temperature in February in Lancaster5
11°C maximum daytime temperature in March in Lancaster11
17°C maximum daytime temperature in April in Lancaster17
23°C maximum daytime temperature in May in Lancaster23
28°C maximum daytime temperature in June in Lancaster28
30°C maximum daytime temperature in July in Lancaster30
29°C maximum daytime temperature in August in Lancaster29
25°C maximum daytime temperature in September in Lancaster25
19°C maximum daytime temperature in October in Lancaster19
12°C maximum daytime temperature in November in Lancaster12
5°C maximum daytime temperature in December in Lancaster5
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
Pittsburgh
2°C maximum daytime temperature in January in Pittsburgh2
4°C maximum daytime temperature in February in Pittsburgh4
10°C maximum daytime temperature in March in Pittsburgh10
16°C maximum daytime temperature in April in Pittsburgh16
22°C maximum daytime temperature in May in Pittsburgh22
27°C maximum daytime temperature in June in Pittsburgh27
29°C maximum daytime temperature in July in Pittsburgh29
28°C maximum daytime temperature in August in Pittsburgh28
24°C maximum daytime temperature in September in Pittsburgh24
18°C maximum daytime temperature in October in Pittsburgh18
11°C maximum daytime temperature in November in Pittsburgh11
4°C maximum daytime temperature in December in Pittsburgh4

All Pennsylvania destinations

Pennsylvania weather averages by month

Temperature in Pennsylvania (°C)

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Max temperature (daytime)
3°C maximum daytime temperature in January in Pennsylvania (Philadelphia)3
5°C maximum daytime temperature in February in Pennsylvania (Philadelphia)5
11°C maximum daytime temperature in March in Pennsylvania (Philadelphia)11
17°C maximum daytime temperature in April in Pennsylvania (Philadelphia)17
23°C maximum daytime temperature in May in Pennsylvania (Philadelphia)23
28°C maximum daytime temperature in June in Pennsylvania (Philadelphia)28
30°C maximum daytime temperature in July in Pennsylvania (Philadelphia)30
29°C maximum daytime temperature in August in Pennsylvania (Philadelphia)29
25°C maximum daytime temperature in September in Pennsylvania (Philadelphia)25
19°C maximum daytime temperature in October in Pennsylvania (Philadelphia)19
13°C maximum daytime temperature in November in Pennsylvania (Philadelphia)13
6°C maximum daytime temperature in December in Pennsylvania (Philadelphia)6
Min temperature (night-time)
-5°C minimum night-time temperature in January in Pennsylvania (Philadelphia)-5
-4°C minimum night-time temperature in February in Pennsylvania (Philadelphia)-4
1°C minimum night-time temperature in March in Pennsylvania (Philadelphia)1
5°C minimum night-time temperature in April in Pennsylvania (Philadelphia)5
11°C minimum night-time temperature in May in Pennsylvania (Philadelphia)11
16°C minimum night-time temperature in June in Pennsylvania (Philadelphia)16
19°C minimum night-time temperature in July in Pennsylvania (Philadelphia)19
19°C minimum night-time temperature in August in Pennsylvania (Philadelphia)19
14°C minimum night-time temperature in September in Pennsylvania (Philadelphia)14
8°C minimum night-time temperature in October in Pennsylvania (Philadelphia)8
3°C minimum night-time temperature in November in Pennsylvania (Philadelphia)3
-2°C minimum night-time temperature in December in Pennsylvania (Philadelphia)-2
Heat & Humidity
No heat & humidity in January in Pennsylvania (Philadelphia)0
No heat & humidity in February in Pennsylvania (Philadelphia)0
No heat & humidity in March in Pennsylvania (Philadelphia)0
No heat & humidity in April in Pennsylvania (Philadelphia)0
No heat & humidity in May in Pennsylvania (Philadelphia)0
Low heat & humidity in June in Pennsylvania (Philadelphia)L
High heat & humidity in July in Pennsylvania (Philadelphia)H
Moderate heat & humidity in August in Pennsylvania (Philadelphia)M
No heat & humidity in September in Pennsylvania (Philadelphia)0
No heat & humidity in October in Pennsylvania (Philadelphia)0
No heat & humidity in November in Pennsylvania (Philadelphia)0
No heat & humidity in December in Pennsylvania (Philadelphia)0

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

Sunshine & UV index in Pennsylvania

  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 Pennsylvania (Philadelphia)10
11 hours of daylight per day in February in Pennsylvania (Philadelphia)11
12 hours of daylight per day in March in Pennsylvania (Philadelphia)12
13 hours of daylight per day in April in Pennsylvania (Philadelphia)13
14 hours of daylight per day in May in Pennsylvania (Philadelphia)14
15 hours of daylight per day in June in Pennsylvania (Philadelphia)15
15 hours of daylight per day in July in Pennsylvania (Philadelphia)15
14 hours of daylight per day in August in Pennsylvania (Philadelphia)14
12 hours of daylight per day in September in Pennsylvania (Philadelphia)12
11 hours of daylight per day in October in Pennsylvania (Philadelphia)11
10 hours of daylight per day in November in Pennsylvania (Philadelphia)10
9 hours of daylight per day in December in Pennsylvania (Philadelphia)9
UV Index (Maximum)
UV (maximum) index 2 (Low) in January in Pennsylvania (Philadelphia)2
UV (maximum) index 3 (Moderate) in February in Pennsylvania (Philadelphia)3
UV (maximum) index 4 (Moderate) in March in Pennsylvania (Philadelphia)4
UV (maximum) index 6 (High) in April in Pennsylvania (Philadelphia)6
UV (maximum) index 8 (Very High) in May in Pennsylvania (Philadelphia)8
UV (maximum) index 9 (Very High) in June in Pennsylvania (Philadelphia)9
UV (maximum) index 9 (Very High) in July in Pennsylvania (Philadelphia)9
UV (maximum) index 8 (Very High) in August in Pennsylvania (Philadelphia)8
UV (maximum) index 6 (High) in September in Pennsylvania (Philadelphia)6
UV (maximum) index 4 (Moderate) in October in Pennsylvania (Philadelphia)4
UV (maximum) index 2 (Low) in November in Pennsylvania (Philadelphia)2
UV (maximum) index 2 (Low) in December in Pennsylvania (Philadelphia)2

Rainfall in Pennsylvania

  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 Pennsylvania (Philadelphia)11
10 days with some rainfall in February in Pennsylvania (Philadelphia)10
10 days with some rainfall in March in Pennsylvania (Philadelphia)10
11 days with some rainfall in April in Pennsylvania (Philadelphia)11
11 days with some rainfall in May in Pennsylvania (Philadelphia)11
10 days with some rainfall in June in Pennsylvania (Philadelphia)10
9 days with some rainfall in July in Pennsylvania (Philadelphia)9
9 days with some rainfall in August in Pennsylvania (Philadelphia)9
8 days with some rainfall in September in Pennsylvania (Philadelphia)8
8 days with some rainfall in October in Pennsylvania (Philadelphia)8
10 days with some rainfall in November in Pennsylvania (Philadelphia)10
11 days with some rainfall in December in Pennsylvania (Philadelphia)11
Average monthly rainfall (mm)
84 mm monthly rainfall in January in Pennsylvania (Philadelphia)84
73 mm monthly rainfall in February in Pennsylvania (Philadelphia)73
92 mm monthly rainfall in March in Pennsylvania (Philadelphia)92
95 mm monthly rainfall in April in Pennsylvania (Philadelphia)95
100 mm monthly rainfall in May in Pennsylvania (Philadelphia)100
96 mm monthly rainfall in June in Pennsylvania (Philadelphia)96
111 mm monthly rainfall in July in Pennsylvania (Philadelphia)111
102 mm monthly rainfall in August in Pennsylvania (Philadelphia)102
91 mm monthly rainfall in September in Pennsylvania (Philadelphia)91
73 mm monthly rainfall in October in Pennsylvania (Philadelphia)73
89 mm monthly rainfall in November in Pennsylvania (Philadelphia)89
90 mm monthly rainfall in December in Pennsylvania (Philadelphia)90

Tropical storm risk: 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

Compare Pennsylvania weather with the UK

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

Maximum daytime temperature (°C)

Pennsylvania, USA (Philadelphia)
UK (London)
3
7
5
7
11
10
17
13
23
17
28
20
30
22
29
22
25
19
19
15
13
10
6
8
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

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

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