Onancock weather by month
What a typical year looks like in Onancock, Virginia: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Painter 2 W, 16 km from Onancock; records cover 1955–2026.
The year at a glance
- Precipitation a year
- 47.2 in1199 mm
- Snow a year
- 7 in17 cm
- Last spring freeze
- Apr 4
- First fall freeze
- Nov 9
- Heating degree days
- 3,659
- Cooling degree days
- 1,439
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are 17°−8° (heating, 99%) and 95°35° (cooling, 1%).
Month by month
Onancock in January
Highs average 48°9° and lows 30°−1°, with 3.6 in90 mm of precipitation and 3 in9 cm of snow in a typical January.
- Record high
- 75°24° (2002)
- Record low
- −5°−21° (1965)
- Heating degree days
- 797
- Cooling degree days
- 0
Onancock in February
Highs average 51°10° and lows 31°0°, with 3.1 in78 mm of precipitation and 1.5 in3.8 cm of snow in a typical February.
- Record high
- 80°27° (2023)
- Record low
- −1°−18° (1971)
- Heating degree days
- 669
- Cooling degree days
- 0
Onancock in March
Highs average 58°14° and lows 37°3°, with 4 in101 mm of precipitation and 0.5 in1.3 cm of snow in a typical March.
- Record high
- 85°29° (1985)
- Record low
- 9°−13° (1960)
- Heating degree days
- 548
- Cooling degree days
- 3
Onancock in April
Highs average 68°20° and lows 47°8°, with 3.3 in83 mm of precipitation in a typical April.
- Record high
- 93°34° (1960)
- Record low
- 24°−4° (1964)
- Heating degree days
- 262
- Cooling degree days
- 28
Onancock in May
Highs average 76°24° and lows 56°13°, with 3.7 in93 mm of precipitation in a typical May.
- Record high
- 95°35° (1991)
- Record low
- 31°−1° (1956)
- Heating degree days
- 84
- Cooling degree days
- 106
Onancock in June
Highs average 83°29° and lows 65°18°, with 4.4 in113 mm of precipitation in a typical June.
- Record high
- 99°37° (2010)
- Record low
- 36°2° (1967)
- Heating degree days
- 9
- Cooling degree days
- 279
Onancock in July
Highs average 88°31° and lows 69°21°, with 5 in127 mm of precipitation in a typical July.
- Record high
- 101°38° (2010)
- Record low
- 47°8° (1972)
- Heating degree days
- 0
- Cooling degree days
- 418
Onancock in August
Highs average 86°30° and lows 67°20°, with 4.5 in114 mm of precipitation in a typical August.
- Record high
- 98°37° (1977)
- Record low
- 44°7° (1976)
- Heating degree days
- 0
- Cooling degree days
- 355
Onancock in September
Highs average 80°27° and lows 62°17°, with 4.5 in115 mm of precipitation in a typical September.
- Record high
- 98°37° (1983)
- Record low
- 39°4° (1963)
- Heating degree days
- 16
- Cooling degree days
- 202
Onancock in OctoberThis month
Highs average 71°22° and lows 51°11°, with 4.3 in109 mm of precipitation in a typical October.
- Record high
- 93°34° (2019)
- Record low
- 24°−4° (1965)
- Heating degree days
- 166
- Cooling degree days
- 45
Onancock in November
Highs average 60°16° and lows 41°5°, with 3.1 in77 mm of precipitation in a typical November.
- Record high
- 82°28° (1974)
- Record low
- 16°−9° (1967)
- Heating degree days
- 429
- Cooling degree days
- 3
Onancock in December
Highs average 52°11° and lows 34°1°, with 3.9 in100 mm of precipitation and 1.2 in3 cm of snow in a typical December.
- Record high
- 78°26° (2015)
- Record low
- −1°−18° (1958)
- Heating degree days
- 679
- Cooling degree days
- 0