Clarendon weather by month
What a typical year looks like in Clarendon, Pennsylvania: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Warren, 9 km from Clarendon; records cover 1896–2026.
The year at a glance
- Precipitation a year
- 47 in1193 mm
- Snow a year
- 72 in182 cm
- Last spring freeze
- May 6
- First fall freeze
- Oct 17
- Heating degree days
- 6,581
- Cooling degree days
- 512
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are −2°−19° (heating, 99%) and 91°33° (cooling, 1%).
Month by month
Clarendon in January
Highs average 33°0° and lows 18°−8°, with 3.6 in92 mm of precipitation and 18 in46 cm of snow in a typical January.
- Record high
- 74°23° (1950)
- Record low
- −26°−32° (1904)
- Heating degree days
- 1234
- Cooling degree days
- 0
Clarendon in February
Highs average 35°2° and lows 18°−8°, with 2.8 in70 mm of precipitation and 15 in38 cm of snow in a typical February.
- Record high
- 74°23° (2017)
- Record low
- −34°−37° (1979)
- Heating degree days
- 1079
- Cooling degree days
- 0
Clarendon in March
Highs average 44°7° and lows 24°−4°, with 3.3 in83 mm of precipitation and 10 in25 cm of snow in a typical March.
- Record high
- 83°28° (1946)
- Record low
- −24°−31° (1916)
- Heating degree days
- 953
- Cooling degree days
- 0
Clarendon in April
Highs average 58°15° and lows 34°1°, with 4.1 in105 mm of precipitation and 2.4 in6.1 cm of snow in a typical April.
- Record high
- 92°33° (1976)
- Record low
- 0°−18° (1923)
- Heating degree days
- 562
- Cooling degree days
- 3
Clarendon in May
Highs average 70°21° and lows 45°7°, with 4.3 in109 mm of precipitation in a typical May.
- Record high
- 95°35° (1914)
- Record low
- 20°−7° (1905)
- Heating degree days
- 265
- Cooling degree days
- 32
Clarendon in June
Highs average 77°25° and lows 55°13°, with 4.7 in118 mm of precipitation in a typical June.
- Record high
- 98°37° (1905)
- Record low
- 29°−2° (1977)
- Heating degree days
- 69
- Cooling degree days
- 97
Clarendon in July
Highs average 81°27° and lows 59°15°, with 4.8 in121 mm of precipitation in a typical July.
- Record high
- 102°39° (2011)
- Record low
- 36°2° (1925)
- Heating degree days
- 16
- Cooling degree days
- 171
Clarendon in August
Highs average 80°27° and lows 58°14°, with 4.1 in103 mm of precipitation in a typical August.
- Record high
- 100°38° (1913)
- Record low
- 35°2° (1925)
- Heating degree days
- 21
- Cooling degree days
- 146
Clarendon in September
Highs average 74°23° and lows 52°11°, with 4 in100 mm of precipitation in a typical September.
- Record high
- 100°38° (1953)
- Record low
- 26°−3° (1904)
- Heating degree days
- 124
- Cooling degree days
- 57
Clarendon in OctoberThis month
Highs average 61°16° and lows 41°5°, with 4 in102 mm of precipitation and 0.1 in0.3 cm of snow in a typical October.
- Record high
- 90°32° (1949)
- Record low
- 14°−10° (1965)
- Heating degree days
- 444
- Cooling degree days
- 6
Clarendon in November
Highs average 48°9° and lows 32°0°, with 3.6 in92 mm of precipitation and 8 in19 cm of snow in a typical November.
- Record high
- 84°29° (1950)
- Record low
- 1°−17° (1914)
- Heating degree days
- 752
- Cooling degree days
- 0
Clarendon in December
Highs average 37°3° and lows 24°−4°, with 3.8 in97 mm of precipitation and 19 in47 cm of snow in a typical December.
- Record high
- 74°23° (1982)
- Record low
- −22°−30° (1917)
- Heating degree days
- 1062
- Cooling degree days
- 0