Rocky Top weather by month
What a typical year looks like in Rocky Top, Tennessee: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Oak Ridge Asos, 24 km from Rocky Top; records cover 1947–2026.
The year at a glance
- Precipitation a year
- 55.5 in1410 mm
- Snow a year
- Rare
- Last spring freeze
- Apr 2
- First fall freeze
- Nov 2
- Heating degree days
- 3,481
- Cooling degree days
- 1,630
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are 14°−10° (heating, 99%) and 96°36° (cooling, 1%).
Month by month
Rocky Top in January
Highs average 48°9° and lows 30°−1°, with 5.1 in129 mm of precipitation in a typical January.
- Record high
- 76°24° (1999)
- Record low
- −17°−27° (1985)
- Heating degree days
- 804
- Cooling degree days
- 0
Rocky Top in February
Highs average 53°12° and lows 33°1°, with 5.6 in142 mm of precipitation in a typical February.
- Record high
- 82°28° (2023)
- Record low
- −13°−25° (1996)
- Heating degree days
- 616
- Cooling degree days
- 1
Rocky Top in March
Highs average 62°17° and lows 40°4°, with 5.1 in130 mm of precipitation in a typical March.
- Record high
- 87°31° (2026)
- Record low
- 1°−17° (1980)
- Heating degree days
- 437
- Cooling degree days
- 6
Rocky Top in April
Highs average 72°22° and lows 48°9°, with 5.2 in132 mm of precipitation in a typical April.
- Record high
- 92°33° (1986)
- Record low
- 20°−7° (1987)
- Heating degree days
- 188
- Cooling degree days
- 38
Rocky Top in May
Highs average 80°27° and lows 57°14°, with 4.1 in103 mm of precipitation in a typical May.
- Record high
- 96°36° (1948)
- Record low
- 30°−1° (1976)
- Heating degree days
- 48
- Cooling degree days
- 151
Rocky Top in June
Highs average 86°30° and lows 65°18°, with 4.6 in116 mm of precipitation in a typical June.
- Record high
- 105°41° (2012)
- Record low
- 39°4° (1977)
- Heating degree days
- 1
- Cooling degree days
- 321
Rocky Top in July
Highs average 89°32° and lows 69°21°, with 5.5 in141 mm of precipitation in a typical July.
- Record high
- 105°41° (1952)
- Record low
- 49°9° (1947)
- Heating degree days
- 0
- Cooling degree days
- 436
Rocky Top in August
Highs average 88°31° and lows 68°20°, with 3.5 in88 mm of precipitation in a typical August.
- Record high
- 103°39° (1983)
- Record low
- 50°10° (1989)
- Heating degree days
- 0
- Cooling degree days
- 405
Rocky Top in September
Highs average 83°28° and lows 61°16°, with 3.8 in97 mm of precipitation in a typical September.
- Record high
- 102°39° (1954)
- Record low
- 33°1° (1967)
- Heating degree days
- 16
- Cooling degree days
- 226
Rocky Top in OctoberThis month
Highs average 72°22° and lows 49°9°, with 3.1 in79 mm of precipitation in a typical October.
- Record high
- 98°37° (2019)
- Record low
- 21°−6° (1952)
- Heating degree days
- 182
- Cooling degree days
- 44
Rocky Top in November
Highs average 60°16° and lows 38°3°, with 4.6 in117 mm of precipitation in a typical November.
- Record high
- 85°29° (2016)
- Record low
- 0°−18° (1950)
- Heating degree days
- 476
- Cooling degree days
- 2
Rocky Top in December
Highs average 51°10° and lows 33°1°, with 5.4 in136 mm of precipitation in a typical December.
- Record high
- 78°26° (1982)
- Record low
- −7°−22° (1983)
- Heating degree days
- 713
- Cooling degree days
- 0