Harriston weather by month
What a typical year looks like in Harriston, Virginia: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at STAUNTON WATER TREATMENT PLANT, 23 km from Harriston; records cover 1893–2026.
The year at a glance
- Precipitation a year
- 40.6 in1032 mm
- Snow a year
- 22 in55 cm
- Last spring freeze
- Apr 13
- First fall freeze
- Oct 23
- Heating degree days
- 4,835
- Cooling degree days
- 892
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are 7°−14° (heating, 99%) and 92°33° (cooling, 1%).
Month by month
Harriston in January
Highs average 42°6° and lows 25°−4°, with 2.9 in73 mm of precipitation and 5 in14 cm of snow in a typical January.
- Record high
- 79°26° (1943)
- Record low
- −16°−27° (1987)
- Heating degree days
- 975
- Cooling degree days
- 0
Harriston in February
Highs average 46°8° and lows 27°−3°, with 2.4 in60 mm of precipitation and 7 in17 cm of snow in a typical February.
- Record high
- 82°28° (1932)
- Record low
- −12°−24° (1899)
- Heating degree days
- 806
- Cooling degree days
- 0
Harriston in March
Highs average 54°12° and lows 33°0°, with 3.4 in87 mm of precipitation and 4 in10 cm of snow in a typical March.
- Record high
- 89°32° (1907)
- Record low
- −3°−19° (1993)
- Heating degree days
- 674
- Cooling degree days
- 1
Harriston in April
Highs average 65°18° and lows 43°6°, with 3.3 in83 mm of precipitation and 0.1 in0.3 cm of snow in a typical April.
- Record high
- 94°34° (1915)
- Record low
- 12°−11° (1923)
- Heating degree days
- 357
- Cooling degree days
- 15
Harriston in May
Highs average 73°23° and lows 52°11°, with 4.1 in103 mm of precipitation in a typical May.
- Record high
- 95°35° (1914)
- Record low
- 26°−3° (1966)
- Heating degree days
- 149
- Cooling degree days
- 60
Harriston in June
Highs average 80°27° and lows 60°16°, with 4.1 in104 mm of precipitation in a typical June.
- Record high
- 102°39° (1936)
- Record low
- 34°1° (1972)
- Heating degree days
- 25
- Cooling degree days
- 178
Harriston in July
Highs average 84°29° and lows 64°18°, with 4.2 in105 mm of precipitation in a typical July.
- Record high
- 106°41° (1926)
- Record low
- 41°5° (1988)
- Heating degree days
- 2
- Cooling degree days
- 279
Harriston in August
Highs average 83°28° and lows 62°17°, with 4 in101 mm of precipitation in a typical August.
- Record high
- 103°39° (1918)
- Record low
- 37°3° (1982)
- Heating degree days
- 5
- Cooling degree days
- 236
Harriston in September
Highs average 77°25° and lows 56°13°, with 4.2 in107 mm of precipitation in a typical September.
- Record high
- 100°38° (1895)
- Record low
- 22°−6° (1983)
- Heating degree days
- 70
- Cooling degree days
- 105
Harriston in OctoberThis month
Highs average 66°19° and lows 44°7°, with 2.6 in66 mm of precipitation in a typical October.
- Record high
- 97°36° (1941)
- Record low
- 18°−8° (1988)
- Heating degree days
- 317
- Cooling degree days
- 17
Harriston in November
Highs average 55°13° and lows 36°2°, with 2.6 in67 mm of precipitation and 0.4 in1 cm of snow in a typical November.
- Record high
- 88°31° (1945)
- Record low
- 2°−17° (1929)
- Heating degree days
- 590
- Cooling degree days
- 1
Harriston in December
Highs average 46°8° and lows 28°−2°, with 3 in75 mm of precipitation and 5 in12 cm of snow in a typical December.
- Record high
- 79°26° (1943)
- Record low
- −13°−25° (1989)
- Heating degree days
- 865
- Cooling degree days
- 0