Big Rock weather by month
What a typical year looks like in Big Rock, Tennessee: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Dover 1 W, 13 km from Big Rock; records cover 1897–2026.
The year at a glance
- Precipitation a year
- 54.8 in1392 mm
- Snow a year
- 4 in10 cm
- Last spring freeze
- Apr 5
- First fall freeze
- Oct 29
- Heating degree days
- 3,845
- Cooling degree days
- 1,538
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are 10°−12° (heating, 99%) and 96°36° (cooling, 1%).
Month by month
Big Rock in January
Highs average 46°8° and lows 27°−3°, with 4.2 in106 mm of precipitation and 1.3 in3.3 cm of snow in a typical January.
- Record high
- 79°26° (1907)
- Record low
- −24°−31° (1963)
- Heating degree days
- 877
- Cooling degree days
- 0
Big Rock in February
Highs average 51°10° and lows 30°−1°, with 4.8 in122 mm of precipitation and 1.3 in3.3 cm of snow in a typical February.
- Record high
- 84°29° (1911)
- Record low
- −21°−29° (1951)
- Heating degree days
- 684
- Cooling degree days
- 0
Big Rock in March
Highs average 60°16° and lows 38°4°, with 5.2 in133 mm of precipitation and 0.4 in1 cm of snow in a typical March.
- Record high
- 93°34° (1910)
- Record low
- −3°−19° (1960)
- Heating degree days
- 493
- Cooling degree days
- 9
Big Rock in April
Highs average 70°21° and lows 47°8°, with 5.7 in144 mm of precipitation in a typical April.
- Record high
- 97°36° (1899)
- Record low
- 21°−6° (1923)
- Heating degree days
- 227
- Cooling degree days
- 38
Big Rock in May
Highs average 77°25° and lows 57°14°, with 6 in153 mm of precipitation in a typical May.
- Record high
- 100°38° (1911)
- Record low
- 30°−1° (1944)
- Heating degree days
- 64
- Cooling degree days
- 131
Big Rock in June
Highs average 84°29° and lows 66°19°, with 4.5 in115 mm of precipitation in a typical June.
- Record high
- 108°42° (2012)
- Record low
- 38°3° (1966)
- Heating degree days
- 4
- Cooling degree days
- 302
Big Rock in July
Highs average 88°31° and lows 69°21°, with 4.3 in110 mm of precipitation in a typical July.
- Record high
- 110°43° (1901)
- Record low
- 44°7° (1947)
- Heating degree days
- 0
- Cooling degree days
- 415
Big Rock in August
Highs average 88°31° and lows 68°20°, with 3.8 in96 mm of precipitation in a typical August.
- Record high
- 107°42° (1930)
- Record low
- 44°7° (1946)
- Heating degree days
- 0
- Cooling degree days
- 394
Big Rock in September
Highs average 82°28° and lows 60°16°, with 3.6 in90 mm of precipitation in a typical September.
- Record high
- 106°41° (1925)
- Record low
- 24°−4° (1940)
- Heating degree days
- 27
- Cooling degree days
- 204
Big Rock in OctoberThis month
Highs average 71°22° and lows 48°9°, with 3.8 in97 mm of precipitation in a typical October.
- Record high
- 96°36° (1910)
- Record low
- 19°−7° (1952)
- Heating degree days
- 219
- Cooling degree days
- 41
Big Rock in November
Highs average 60°15° and lows 38°3°, with 4.3 in108 mm of precipitation and 0.1 in0.3 cm of snow in a typical November.
- Record high
- 87°31° (1909)
- Record low
- −7°−22° (1950)
- Heating degree days
- 489
- Cooling degree days
- 4
Big Rock in December
Highs average 50°10° and lows 31°0°, with 4.6 in117 mm of precipitation and 0.7 in1.8 cm of snow in a typical December.
- Record high
- 79°26° (1951)
- Record low
- −18°−28° (1917)
- Heating degree days
- 761
- Cooling degree days
- 0