Big Rock weather by month
What a typical year looks like in Big Rock, Virginia: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Grundy, 12 km from Big Rock; records cover 1960–2026.
The year at a glance
- Precipitation a year
- 46.9 in1190 mm
- Snow a year
- 16 in41 cm
- Last spring freeze
- Apr 17
- First fall freeze
- Oct 23
- Heating degree days
- 4,786
- Cooling degree days
- 787
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 94°34° (cooling, 1%).
Month by month
Big Rock in January
Highs average 43°6° and lows 24°−4°, with 3.3 in84 mm of precipitation and 6 in16 cm of snow in a typical January.
- Record high
- 78°26° (1999)
- Record low
- −14°−26° (1985)
- Heating degree days
- 972
- Cooling degree days
- 0
Big Rock in February
Highs average 47°8° and lows 27°−3°, with 3.3 in83 mm of precipitation and 4 in11 cm of snow in a typical February.
- Record high
- 83°28° (2000)
- Record low
- −17°−27° (2015)
- Heating degree days
- 788
- Cooling degree days
- 0
Big Rock in March
Highs average 56°13° and lows 32°0°, with 4 in102 mm of precipitation and 2.6 in6.6 cm of snow in a typical March.
- Record high
- 89°32° (1967)
- Record low
- −3°−19° (1993)
- Heating degree days
- 658
- Cooling degree days
- 0
Big Rock in April
Highs average 67°19° and lows 40°5°, with 4.3 in109 mm of precipitation and 0.2 in0.5 cm of snow in a typical April.
- Record high
- 94°34° (1995)
- Record low
- 21°−6° (1987)
- Heating degree days
- 349
- Cooling degree days
- 7
Big Rock in May
Highs average 74°23° and lows 50°10°, with 4.8 in122 mm of precipitation in a typical May.
- Record high
- 98°37° (1969)
- Record low
- 25°−4° (1970)
- Heating degree days
- 142
- Cooling degree days
- 47
Big Rock in June
Highs average 80°27° and lows 59°15°, with 4.8 in121 mm of precipitation in a typical June.
- Record high
- 100°38° (1969)
- Record low
- 40°4° (1972)
- Heating degree days
- 20
- Cooling degree days
- 149
Big Rock in July
Highs average 83°28° and lows 63°17°, with 5.7 in145 mm of precipitation in a typical July.
- Record high
- 101°38° (1969)
- Record low
- 40°4° (1988)
- Heating degree days
- 2
- Cooling degree days
- 248
Big Rock in August
Highs average 82°28° and lows 63°17°, with 4.2 in106 mm of precipitation in a typical August.
- Record high
- 100°38° (1965)
- Record low
- 45°7° (1965)
- Heating degree days
- 3
- Cooling degree days
- 221
Big Rock in September
Highs average 77°25° and lows 56°13°, with 3.2 in80 mm of precipitation in a typical September.
- Record high
- 102°39° (1998)
- Record low
- 30°−1° (1990)
- Heating degree days
- 54
- Cooling degree days
- 102
Big Rock in OctoberThis month
Highs average 67°20° and lows 44°6°, with 3 in77 mm of precipitation in a typical October.
- Record high
- 93°34° (2019)
- Record low
- 19°−7° (1962)
- Heating degree days
- 308
- Cooling degree days
- 13
Big Rock in November
Highs average 56°13° and lows 33°0°, with 2.6 in66 mm of precipitation and 0.4 in1 cm of snow in a typical November.
- Record high
- 85°29° (1993)
- Record low
- 9°−13° (1970)
- Heating degree days
- 620
- Cooling degree days
- 0
Big Rock in December
Highs average 46°8° and lows 28°−2°, with 3.7 in94 mm of precipitation and 2.4 in6.1 cm of snow in a typical December.
- Record high
- 80°27° (1982)
- Record low
- −11°−24° (1989)
- Heating degree days
- 870
- Cooling degree days
- 0