Chambersburg, Pennsylvania Climate

United States

Pop. 20,691 Elev. 191 m / 627 ft TZ: America/New_York (UTC-4) ·

Summers in Chambersburg are warm, with July highs around 87°F (31°C), while winters are frigid with January lows of 20°F (-7°C). Humidity pushes the summer feels-like temperature to 99°F (37°C), while wind chill can drive winter lows to 12°F (-11°C). Expect around 56 rainy days annually (31.6 in / 803 mm total), with snow on 5 days and 27 in (686 mm) of annual accumulation. The city averages 107 sunny days per year and around 31 thunderstorm days.

Temperature 87°F (31°C) high 20°F (-7°C) low
Feels like 99°F (37°C) high 12°F (-11°C) low
Rain 56 days 31.6 in (803 mm) /yr
Snow 5 days 27.0 in (686 mm) /yr
Sky 107 sunny 31 stormy
Wind 2.3 mph (1.0 m/s) avg

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Monthly Climate Chart

↓ Monthly data table
Best months to visit: Apr, Aug, Sep, Oct

Sky & Air by Month

Cloud cover (%)
50
Jan
65
Feb
46
Mar
70
Apr
75
May
59
Jun
58
Jul
51
Aug
60
Sep
42
Oct
55
Nov
69
Dec
Humidity (%)
60
Jan
58
Feb
49
Mar
56
Apr
68
May
71
Jun
71
Jul
64
Aug
65
Sep
63
Oct
60
Nov
62
Dec

Weather Days by Month

↓ Weather days table

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Nearby Cities

Nearby

Commercial airport 16 mi Hagerstown Regional Richard A Henson Field (HGR)
Ski resort 20 mi Whitetail Resort
National park 25 mi Appalachian National Scenic Trail
Mountain peak (4,928 ft) 306 mi Third Peak
Hospital 1 mi Chambersburg Hospital
Hiking trail 9 mi Three Valley Traill

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Monthly Weather Data

↑ See chart
Month Avg High Avg Low Rainfall Snowfall Sunny Days
January 33°F 1°C 20°F -7°C 0.3 in 9 mm 10.5 in266 mm 12
February 40°F 5°C 27°F -3°C 1.6 in 41 mm 8.6 in218 mm 5
March 59°F 15°C 38°F 3°C 1.7 in 44 mm 0.0 in1 mm 12
April 66°F 19°C 46°F 8°C 3.0 in 77 mm 4
May 70°F 21°C 54°F 12°C 8.2 in 209 mm 3
June 82°F 28°C 64°F 18°C 3.8 in 98 mm 10
July 87°F 31°C 70°F 21°C 3.5 in 90 mm 7
August 81°F 27°C 62°F 16°C 1.8 in 47 mm 14
September 78°F 26°C 58°F 15°C 1.6 in 41 mm 9
October 65°F 18°C 46°F 8°C 2.6 in 66 mm 15
November 53°F 11°C 37°F 3°C 1.6 in 40 mm 0.3 in8 mm 12
December 39°F 4°C 25°F -4°C 1.6 in 41 mm 7.6 in193 mm 4

Weather Days by Month

↑ See chart
Month Sunny Days Storm Days
January 12 0
February 5 1
March 12 1
April 4 1
May 3 9
June 10 5
July 7 5
August 14 3
September 9 2
October 15 2
November 12 1
December 4 1