Williston weather by month
What a typical year looks like in Williston, Tennessee: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Ames Plantation, 16 km from Williston; records cover 1976–2026.
The year at a glance
- Precipitation a year
- 57.8 in1468 mm
- Snow a year
- Rare
- Last spring freeze
- Apr 4
- First fall freeze
- Oct 29
- Heating degree days
- 3,269
- Cooling degree days
- 1,914
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are 13°−11° (heating, 99%) and 98°37° (cooling, 1%).
Month by month
Williston in January
Highs average 50°10° and lows 31°−1°, with 4.6 in118 mm of precipitation in a typical January.
- Record high
- 77°25° (2022)
- Record low
- −12°−24° (1985)
- Heating degree days
- 766
- Cooling degree days
- 1
Williston in February
Highs average 55°13° and lows 34°1°, with 5 in126 mm of precipitation in a typical February.
- Record high
- 82°28° (1996)
- Record low
- −1°−18° (1988)
- Heating degree days
- 586
- Cooling degree days
- 2
Williston in March
Highs average 63°17° and lows 41°5°, with 5.7 in146 mm of precipitation in a typical March.
- Record high
- 89°32° (2007)
- Record low
- 6°−14° (2015)
- Heating degree days
- 416
- Cooling degree days
- 13
Williston in April
Highs average 73°23° and lows 49°10°, with 5.7 in144 mm of precipitation in a typical April.
- Record high
- 91°33° (1987)
- Record low
- 22°−6° (2007)
- Heating degree days
- 181
- Cooling degree days
- 58
Williston in May
Highs average 81°27° and lows 59°15°, with 5.7 in145 mm of precipitation in a typical May.
- Record high
- 94°34° (1977)
- Record low
- 33°1° (1976)
- Heating degree days
- 42
- Cooling degree days
- 185
Williston in June
Highs average 88°31° and lows 66°19°, with 4.9 in124 mm of precipitation in a typical June.
- Record high
- 102°39° (2012)
- Record low
- 45°7° (1977)
- Heating degree days
- 1
- Cooling degree days
- 367
Williston in July
Highs average 91°33° and lows 70°21°, with 4.9 in125 mm of precipitation in a typical July.
- Record high
- 105°41° (1980)
- Record low
- 53°12° (1990)
- Heating degree days
- 0
- Cooling degree days
- 482
Williston in August
Highs average 91°33° and lows 68°20°, with 3.4 in85 mm of precipitation in a typical August.
- Record high
- 106°41° (2007)
- Record low
- 46°8° (1986)
- Heating degree days
- 0
- Cooling degree days
- 450
Williston in September
Highs average 86°30° and lows 61°16°, with 4.1 in103 mm of precipitation in a typical September.
- Record high
- 101°38° (2011)
- Record low
- 35°2° (1990)
- Heating degree days
- 16
- Cooling degree days
- 269
Williston in OctoberThis month
Highs average 75°24° and lows 50°10°, with 4.1 in105 mm of precipitation in a typical October.
- Record high
- 98°37° (2019)
- Record low
- 26°−3° (1981)
- Heating degree days
- 160
- Cooling degree days
- 76
Williston in November
Highs average 63°17° and lows 40°4°, with 4.2 in107 mm of precipitation in a typical November.
- Record high
- 88°31° (2000)
- Record low
- 12°−11° (2019)
- Heating degree days
- 426
- Cooling degree days
- 9
Williston in December
Highs average 53°12° and lows 34°1°, with 5.5 in140 mm of precipitation in a typical December.
- Record high
- 80°27° (2021)
- Record low
- −8°−22° (1989)
- Heating degree days
- 675
- Cooling degree days
- 2