Cowan weather by month
What a typical year looks like in Cowan, Tennessee: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Sewanee, 10 km from Cowan; records cover 1895–2026.
The year at a glance
- Precipitation a year
- 64 in1627 mm
- Snow a year
- Rare
- Last spring freeze
- Apr 5
- First fall freeze
- Nov 1
- Heating degree days
- 3,865
- Cooling degree days
- 1,118
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are 11°−12° (heating, 99%) and 92°33° (cooling, 1%).
Month by month
Cowan in January
Highs average 45°7° and lows 29°−2°, with 5.5 in140 mm of precipitation in a typical January.
- Record high
- 73°23° (2022)
- Record low
- −10°−23° (1940)
- Heating degree days
- 862
- Cooling degree days
- 0
Cowan in February
Highs average 49°10° and lows 32°0°, with 5.2 in132 mm of precipitation in a typical February.
- Record high
- 80°27° (2023)
- Record low
- −11°−24° (1899)
- Heating degree days
- 683
- Cooling degree days
- 0
Cowan in March
Highs average 58°15° and lows 40°4°, with 5.4 in137 mm of precipitation in a typical March.
- Record high
- 86°30° (1929)
- Record low
- 3°−16° (1943)
- Heating degree days
- 500
- Cooling degree days
- 4
Cowan in April
Highs average 67°20° and lows 48°9°, with 6.4 in163 mm of precipitation in a typical April.
- Record high
- 90°32° (1925)
- Record low
- 20°−7° (1898)
- Heating degree days
- 242
- Cooling degree days
- 20
Cowan in May
Highs average 74°24° and lows 56°13°, with 4.9 in125 mm of precipitation in a typical May.
- Record high
- 93°34° (1941)
- Record low
- 30°−1° (1908)
- Heating degree days
- 86
- Cooling degree days
- 87
Cowan in June
Highs average 81°27° and lows 63°17°, with 5.8 in147 mm of precipitation in a typical June.
- Record high
- 101°38° (2012)
- Record low
- 39°4° (1928)
- Heating degree days
- 6
- Cooling degree days
- 213
Cowan in July
Highs average 84°29° and lows 66°19°, with 5.6 in142 mm of precipitation in a typical July.
- Record high
- 103°39° (1930)
- Record low
- 52°11° (1918)
- Heating degree days
- 0
- Cooling degree days
- 315
Cowan in August
Highs average 84°29° and lows 66°19°, with 4.7 in120 mm of precipitation in a typical August.
- Record high
- 101°38° (1930)
- Record low
- 50°10° (2004)
- Heating degree days
- 1
- Cooling degree days
- 298
Cowan in September
Highs average 78°26° and lows 60°16°, with 5.1 in129 mm of precipitation in a typical September.
- Record high
- 99°37° (2019)
- Record low
- 34°1° (1899)
- Heating degree days
- 32
- Cooling degree days
- 153
Cowan in OctoberThis month
Highs average 68°20° and lows 50°10°, with 4.2 in107 mm of precipitation in a typical October.
- Record high
- 94°34° (2019)
- Record low
- 24°−4° (1925)
- Heating degree days
- 212
- Cooling degree days
- 26
Cowan in November
Highs average 58°14° and lows 40°5°, with 4.9 in123 mm of precipitation in a typical November.
- Record high
- 85°29° (1901)
- Record low
- 3°−16° (1914)
- Heating degree days
- 485
- Cooling degree days
- 2
Cowan in December
Highs average 48°9° and lows 33°1°, with 6.4 in162 mm of precipitation in a typical December.
- Record high
- 72°22° (1931)
- Record low
- −6°−21° (1917)
- Heating degree days
- 756
- Cooling degree days
- 0