Grafton weather by month
What a typical year looks like in Grafton, West Virginia: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Clarksburg Benedum Airport, 18 km from Grafton; records cover 1922–2026.
The year at a glance
- Precipitation a year
- 44.8 in1139 mm
- Snow a year
- Rare
- Last spring freeze
- Apr 26
- First fall freeze
- Oct 19
- Heating degree days
- 4,662
- Cooling degree days
- 1,027
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are 4°−16° (heating, 99%) and 92°33° (cooling, 1%).
Month by month
Grafton in January
Highs average 43°6° and lows 25°−4°, with 3.3 in84 mm of precipitation in a typical January.
- Record high
- 78°26° (1973)
- Record low
- −24°−31° (1994)
- Heating degree days
- 973
- Cooling degree days
- 0
Grafton in February
Highs average 46°8° and lows 27°−3°, with 3.1 in80 mm of precipitation in a typical February.
- Record high
- 79°26° (2018)
- Record low
- −23°−31° (1934)
- Heating degree days
- 809
- Cooling degree days
- 0
Grafton in March
Highs average 55°13° and lows 33°1°, with 3.6 in92 mm of precipitation in a typical March.
- Record high
- 88°31° (1929)
- Record low
- −18°−28° (1934)
- Heating degree days
- 652
- Cooling degree days
- 2
Grafton in April
Highs average 68°20° and lows 43°6°, with 3.9 in99 mm of precipitation in a typical April.
- Record high
- 95°35° (1925)
- Record low
- 7°−14° (1923)
- Heating degree days
- 309
- Cooling degree days
- 20
Grafton in May
Highs average 76°24° and lows 52°11°, with 4.3 in108 mm of precipitation in a typical May.
- Record high
- 96°36° (1939)
- Record low
- 23°−5° (1947)
- Heating degree days
- 118
- Cooling degree days
- 82
Grafton in June
Highs average 83°28° and lows 60°16°, with 4.5 in115 mm of precipitation in a typical June.
- Record high
- 100°38° (1925)
- Record low
- 33°1° (1945)
- Heating degree days
- 14
- Cooling degree days
- 204
Grafton in July
Highs average 86°30° and lows 64°18°, with 5.4 in137 mm of precipitation in a typical July.
- Record high
- 102°39° (1930)
- Record low
- 41°5° (1963)
- Heating degree days
- 1
- Cooling degree days
- 306
Grafton in August
Highs average 85°29° and lows 63°17°, with 3.6 in92 mm of precipitation in a typical August.
- Record high
- 101°38° (1930)
- Record low
- 39°4° (1965)
- Heating degree days
- 2
- Cooling degree days
- 270
Grafton in September
Highs average 79°26° and lows 55°13°, with 3.5 in89 mm of precipitation in a typical September.
- Record high
- 102°39° (1953)
- Record low
- 29°−2° (1942)
- Heating degree days
- 59
- Cooling degree days
- 123
Grafton in OctoberThis month
Highs average 68°20° and lows 44°7°, with 3 in77 mm of precipitation in a typical October.
- Record high
- 95°35° (2019)
- Record low
- 14°−10° (1930)
- Heating degree days
- 303
- Cooling degree days
- 19
Grafton in November
Highs average 56°13° and lows 36°2°, with 3.2 in81 mm of precipitation in a typical November.
- Record high
- 85°29° (1948)
- Record low
- −2°−19° (1930)
- Heating degree days
- 578
- Cooling degree days
- 1
Grafton in December
Highs average 47°8° and lows 29°−2°, with 3.4 in86 mm of precipitation in a typical December.
- Record high
- 78°26° (1951)
- Record low
- −13°−25° (1942)
- Heating degree days
- 844
- Cooling degree days
- 0