Weather Averages for Valley Forge, PA

7-day Forecast / 10-day Forecast

Latitude: 40°7'N, Longitude: 75°30'W, Elevation: 105.0 ft, Distance: 2.17 mi Valley Forge, PA Averages »

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

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