Mountain City weather by month
What a typical year looks like in Mountain City, Tennessee: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Mountain City 2, 1 km from Mountain City; records cover 1956–2026.
The year at a glance
- Precipitation a year
- 47.2 in1199 mm
- Snow a year
- 12 in30 cm
- Last spring freeze
- May 2
- First fall freeze
- Oct 13
- Heating degree days
- 4,835
- Cooling degree days
- 632
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are 5°−15° (heating, 99%) and 89°32° (cooling, 1%).
Month by month
Mountain City in January
Highs average 46°8° and lows 23°−5°, with 3.7 in95 mm of precipitation and 3 in9 cm of snow in a typical January.
- Record high
- 76°24° (2002)
- Record low
- −20°−29° (1970)
- Heating degree days
- 953
- Cooling degree days
- 0
Mountain City in February
Highs average 49°9° and lows 25°−4°, with 3.4 in85 mm of precipitation and 5 in13 cm of snow in a typical February.
- Record high
- 79°26° (2018)
- Record low
- −18°−28° (1996)
- Heating degree days
- 781
- Cooling degree days
- 0
Mountain City in March
Highs average 57°14° and lows 31°0°, with 4.1 in104 mm of precipitation and 1.1 in2.8 cm of snow in a typical March.
- Record high
- 85°29° (1973)
- Record low
- −11°−24° (1960)
- Heating degree days
- 651
- Cooling degree days
- 0
Mountain City in April
Highs average 67°19° and lows 39°4°, with 4.3 in110 mm of precipitation and 0.1 in0.3 cm of snow in a typical April.
- Record high
- 88°31° (1976)
- Record low
- 14°−10° (1972)
- Heating degree days
- 365
- Cooling degree days
- 5
Mountain City in May
Highs average 74°23° and lows 49°9°, with 5.2 in131 mm of precipitation in a typical May.
- Record high
- 89°32° (2011)
- Record low
- 22°−6° (1963)
- Heating degree days
- 157
- Cooling degree days
- 40
Mountain City in June
Highs average 80°27° and lows 56°14°, with 4.5 in114 mm of precipitation in a typical June.
- Record high
- 97°36° (2012)
- Record low
- 28°−2° (1966)
- Heating degree days
- 32
- Cooling degree days
- 126
Mountain City in July
Highs average 82°28° and lows 60°16°, with 5 in128 mm of precipitation in a typical July.
- Record high
- 97°36° (2012)
- Record low
- 36°2° (1961)
- Heating degree days
- 7
- Cooling degree days
- 200
Mountain City in August
Highs average 81°27° and lows 59°15°, with 4.2 in106 mm of precipitation in a typical August.
- Record high
- 95°35° (2007)
- Record low
- 35°2° (1986)
- Heating degree days
- 10
- Cooling degree days
- 175
Mountain City in September
Highs average 77°25° and lows 53°11°, with 3.3 in83 mm of precipitation in a typical September.
- Record high
- 94°34° (1975)
- Record low
- 28°−2° (1963)
- Heating degree days
- 83
- Cooling degree days
- 74
Mountain City in OctoberThis month
Highs average 68°20° and lows 41°5°, with 2.8 in71 mm of precipitation in a typical October.
- Record high
- 91°33° (2019)
- Record low
- 10°−12° (1962)
- Heating degree days
- 334
- Cooling degree days
- 11
Mountain City in November
Highs average 58°14° and lows 31°0°, with 2.9 in73 mm of precipitation and 0.4 in1 cm of snow in a typical November.
- Record high
- 83°28° (2003)
- Record low
- 2°−17° (1970)
- Heating degree days
- 613
- Cooling degree days
- 1
Mountain City in December
Highs average 49°9° and lows 26°−3°, with 3.9 in99 mm of precipitation and 2 in5.1 cm of snow in a typical December.
- Record high
- 77°25° (2001)
- Record low
- −24°−31° (1962)
- Heating degree days
- 849
- Cooling degree days
- 0