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Weather Averages for
Valley Forge, PA
Latitude: 40°7'N,
Longitude: 75°30'W,
Elevation: 105.0 ft,
Distance: 2.17 mi
Average temperature
over 30 years |
°F |
52 |
29 |
31 |
41 |
51 |
62 |
70 |
74 |
72 |
65 |
54 |
44 |
34 |
Average high temperature
over 30 years |
°F |
64 |
39 |
42 |
52 |
64 |
74 |
82 |
86 |
85 |
78 |
67 |
55 |
43 |
Average low temperature
over 30 years |
°F |
41 |
19 |
21 |
30 |
38 |
48 |
57 |
62 |
60 |
53 |
42 |
33 |
24 |
Highest recorded temperature
over 49 years |
°F |
105 |
77 |
78 |
82 |
95 |
96 |
100 |
105 |
102 |
105 |
89 |
86 |
75 |
Lowest recorded temperature
over 49 years |
°F |
-18 |
-18 |
-11 |
-2 |
16 |
26 |
33 |
42 |
34 |
28 |
19 |
8 |
-7 |
Average number of days above 90°F
over 30 years |
days |
25 |
- |
- |
- |
0.3 |
1.1 |
4.9 |
10 |
6.6 |
1.9 |
0.1 |
- |
- |
Average precipitation
over 30 years |
in |
41.9 |
3.1 |
2.9 |
3.5 |
3.5 |
4.0 |
3.7 |
4.3 |
3.4 |
3.8 |
2.8 |
3.8 |
3.6 |
Average number of days below 32°F
over 30 years |
days |
114 |
23 |
22 |
18 |
7 |
0.7 |
- |
- |
- |
0.1 |
5 |
14 |
24 |
Average number of days below 0°F
over 30 years |
days |
2 |
1.2 |
0.6 |
- |
- |
- |
- |
- |
- |
- |
- |
- |
0.2 |
Average snowfall
over 30 years |
in |
10.2 |
4.0 |
5.7 |
1.5 |
0.1 |
- |
- |
- |
- |
- |
- |
0.4 |
3.0 |
Most rain reported in a day
over 49 years |
in |
6.0 |
2.4 |
2.2 |
2.7 |
2.2 |
3.3 |
3.7 |
4.4 |
5.0 |
6.0 |
3.4 |
6.0 |
2.9 |
Most rain reported in a month
over 49 years |
in |
59.6 |
10.0 |
5.6 |
7.5 |
8.0 |
8.8 |
11.0 |
9.3 |
14.4 |
10.2 |
6.9 |
10.0 |
9.0 |
Least rain reported in a month
over 49 years |
in |
29.8 |
0.4 |
0.7 |
1.2 |
0.4 |
0.7 |
0.3 |
0.8 |
0.6 |
0.9 |
0.2 |
0.5 |
0.4 |
Heating degree days
over 30 years |
days |
5270 |
1107 |
935 |
720 |
404 |
139 |
18 |
2 |
7 |
79 |
328 |
601 |
930 |
Cooling degree days
over 30 years |
days |
878 |
- |
- |
1 |
7 |
51 |
179 |
294 |
234 |
102 |
9 |
1 |
- |
Most snow reported in a month
over 49 years |
in |
48.2 |
13.5 |
21.0 |
21.0 |
2.0 |
- |
- |
- |
- |
- |
- |
6.0 |
26.7 |
Check weather averages for nearby locations (some locations might offer more data):
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