Chalkhill weather by month
What a typical year looks like in Chalkhill, Pennsylvania: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Confluence 1 SW Dam, 22 km from Chalkhill; records cover 1946–2026.
The year at a glance
- Precipitation a year
- 47.2 in1199 mm
- Snow a year
- 61 in155 cm
- Last spring freeze
- May 7
- First fall freeze
- Oct 16
- Heating degree days
- 5,918
- Cooling degree days
- 632
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are −3°−19° (heating, 99%) and 93°34° (cooling, 1%).
Month by month
Chalkhill in January
Highs average 37°3° and lows 19°−7°, with 3.6 in92 mm of precipitation and 18 in46 cm of snow in a typical January.
- Record high
- 76°24° (1950)
- Record low
- −30°−34° (1994)
- Heating degree days
- 1152
- Cooling degree days
- 0
Chalkhill in February
Highs average 41°5° and lows 20°−7°, with 3.4 in87 mm of precipitation and 17 in43 cm of snow in a typical February.
- Record high
- 78°26° (2018)
- Record low
- −20°−29° (1996)
- Heating degree days
- 972
- Cooling degree days
- 0
Chalkhill in March
Highs average 50°10° and lows 27°−3°, with 3.9 in99 mm of precipitation and 10 in26 cm of snow in a typical March.
- Record high
- 85°29° (1998)
- Record low
- −10°−23° (1986)
- Heating degree days
- 836
- Cooling degree days
- 0
Chalkhill in April
Highs average 63°17° and lows 36°2°, with 4 in103 mm of precipitation and 0.9 in2.3 cm of snow in a typical April.
- Record high
- 92°33° (1976)
- Record low
- 12°−11° (1995)
- Heating degree days
- 467
- Cooling degree days
- 4
Chalkhill in May
Highs average 72°22° and lows 47°8°, with 4.9 in125 mm of precipitation in a typical May.
- Record high
- 93°34° (1991)
- Record low
- 23°−5° (1978)
- Heating degree days
- 209
- Cooling degree days
- 40
Chalkhill in June
Highs average 80°27° and lows 56°13°, with 4.9 in123 mm of precipitation in a typical June.
- Record high
- 98°37° (1953)
- Record low
- 29°−2° (2009)
- Heating degree days
- 41
- Cooling degree days
- 123
Chalkhill in July
Highs average 84°29° and lows 60°15°, with 4.5 in115 mm of precipitation in a typical July.
- Record high
- 104°40° (1988)
- Record low
- 36°2° (1988)
- Heating degree days
- 6
- Cooling degree days
- 210
Chalkhill in August
Highs average 82°28° and lows 59°15°, with 4 in102 mm of precipitation in a typical August.
- Record high
- 101°38° (1988)
- Record low
- 33°1° (1986)
- Heating degree days
- 12
- Cooling degree days
- 179
Chalkhill in September
Highs average 76°24° and lows 52°11°, with 4 in101 mm of precipitation in a typical September.
- Record high
- 99°37° (1953)
- Record low
- 23°−5° (1957)
- Heating degree days
- 100
- Cooling degree days
- 68
Chalkhill in OctoberThis month
Highs average 64°18° and lows 40°5°, with 3.4 in85 mm of precipitation and 0.2 in0.5 cm of snow in a typical October.
- Record high
- 91°33° (1953)
- Record low
- 16°−9° (1952)
- Heating degree days
- 403
- Cooling degree days
- 8
Chalkhill in November
Highs average 52°11° and lows 30°−1°, with 3.1 in78 mm of precipitation and 4 in9 cm of snow in a typical November.
- Record high
- 80°27° (2003)
- Record low
- 4°−16° (1951)
- Heating degree days
- 722
- Cooling degree days
- 0
Chalkhill in December
Highs average 41°5° and lows 24°−4°, with 3.5 in89 mm of precipitation and 11 in28 cm of snow in a typical December.
- Record high
- 79°26° (1982)
- Record low
- −18°−28° (1989)
- Heating degree days
- 998
- Cooling degree days
- 0