Harpers Ferry weather by month
What a typical year looks like in Harpers Ferry, West Virginia: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Martinsburg Eastern West Virginia Regional Airport, 22 km from Harpers Ferry; records cover 1891–2026.
The year at a glance
- Precipitation a year
- 39 in990 mm
- Snow a year
- Rare
- Last spring freeze
- Apr 16
- First fall freeze
- Oct 19
- Heating degree days
- 4,947
- Cooling degree days
- 1,012
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are 9°−13° (heating, 99%) and 96°36° (cooling, 1%).
Month by month
Harpers Ferry in January
Highs average 41°5° and lows 24°−5°, with 2.6 in66 mm of precipitation in a typical January.
- Record high
- 80°27° (1932)
- Record low
- −19°−28° (1912)
- Heating degree days
- 1010
- Cooling degree days
- 0
Harpers Ferry in February
Highs average 45°7° and lows 25°−4°, with 2.1 in54 mm of precipitation in a typical February.
- Record high
- 83°28° (1997)
- Record low
- −13°−25° (1899)
- Heating degree days
- 840
- Cooling degree days
- 0
Harpers Ferry in March
Highs average 54°12° and lows 32°0°, with 3.4 in87 mm of precipitation in a typical March.
- Record high
- 90°32° (1907)
- Record low
- −3°−19° (1993)
- Heating degree days
- 688
- Cooling degree days
- 1
Harpers Ferry in April
Highs average 65°19° and lows 42°5°, with 3.4 in85 mm of precipitation in a typical April.
- Record high
- 101°38° (1925)
- Record low
- 19°−7° (1907)
- Heating degree days
- 354
- Cooling degree days
- 12
Harpers Ferry in May
Highs average 74°23° and lows 51°11°, with 4.1 in103 mm of precipitation in a typical May.
- Record high
- 100°38° (1925)
- Record low
- 26°−3° (1966)
- Heating degree days
- 141
- Cooling degree days
- 64
Harpers Ferry in June
Highs average 82°28° and lows 60°15°, with 3.9 in98 mm of precipitation in a typical June.
- Record high
- 110°43° (1925)
- Record low
- 36°2° (1930)
- Heating degree days
- 18
- Cooling degree days
- 201
Harpers Ferry in July
Highs average 87°31° and lows 65°18°, with 3.8 in96 mm of precipitation in a typical July.
- Record high
- 112°44° (1936)
- Record low
- 41°5° (1943)
- Heating degree days
- 0
- Cooling degree days
- 332
Harpers Ferry in August
Highs average 85°29° and lows 63°17°, with 3 in77 mm of precipitation in a typical August.
- Record high
- 108°42° (1930)
- Record low
- 38°3° (1923)
- Heating degree days
- 3
- Cooling degree days
- 274
Harpers Ferry in September
Highs average 78°26° and lows 55°13°, with 4 in102 mm of precipitation in a typical September.
- Record high
- 103°39° (1932)
- Record low
- 29°−2° (1947)
- Heating degree days
- 63
- Cooling degree days
- 114
Harpers Ferry in OctoberThis month
Highs average 67°19° and lows 44°7°, with 3 in76 mm of precipitation in a typical October.
- Record high
- 98°37° (1927)
- Record low
- 17°−8° (1969)
- Heating degree days
- 318
- Cooling degree days
- 14
Harpers Ferry in November
Highs average 55°13° and lows 34°1°, with 2.7 in69 mm of precipitation in a typical November.
- Record high
- 86°30° (1974)
- Record low
- 6°−14° (1908)
- Heating degree days
- 611
- Cooling degree days
- 0
Harpers Ferry in December
Highs average 45°7° and lows 27°−3°, with 3 in76 mm of precipitation in a typical December.
- Record high
- 78°26° (1951)
- Record low
- −12°−24° (1983)
- Heating degree days
- 901
- Cooling degree days
- 0