Morristown weather by month
What a typical year looks like in Morristown, Tennessee: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at MORRISTOWN RADIO WCRK, 3 km from Morristown; records cover 1982–2026.
The year at a glance
- Precipitation a year
- 48.1 in1223 mm
- Snow a year
- 9 in22 cm
- Last spring freeze
- Apr 8
- First fall freeze
- Oct 27
- Heating degree days
- 4,015
- Cooling degree days
- 1,251
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are 12°−11° (heating, 99%) and 94°34° (cooling, 1%).
Month by month
Morristown in January
Highs average 46°8° and lows 27°−3°, with 4.1 in103 mm of precipitation and 2.1 in5.3 cm of snow in a typical January.
- Record high
- 77°25° (2020)
- Record low
- −19°−28° (1985)
- Heating degree days
- 879
- Cooling degree days
- 0
Morristown in February
Highs average 51°10° and lows 30°−1°, with 4.5 in114 mm of precipitation and 2.9 in7.4 cm of snow in a typical February.
- Record high
- 80°27° (2018)
- Record low
- −13°−25° (1996)
- Heating degree days
- 688
- Cooling degree days
- 0
Morristown in March
Highs average 60°15° and lows 36°2°, with 4.9 in124 mm of precipitation and 2 in5.1 cm of snow in a typical March.
- Record high
- 84°29° (1998)
- Record low
- 0°−18° (1993)
- Heating degree days
- 530
- Cooling degree days
- 2
Morristown in April
Highs average 69°21° and lows 45°7°, with 4.4 in113 mm of precipitation in a typical April.
- Record high
- 90°32° (1986)
- Record low
- 21°−6° (1983)
- Heating degree days
- 260
- Cooling degree days
- 19
Morristown in May
Highs average 77°25° and lows 55°13°, with 3.8 in95 mm of precipitation in a typical May.
- Record high
- 92°33° (2026)
- Record low
- 31°−1° (1989)
- Heating degree days
- 80
- Cooling degree days
- 100
Morristown in June
Highs average 83°29° and lows 63°17°, with 4.5 in115 mm of precipitation in a typical June.
- Record high
- 103°39° (2012)
- Record low
- 41°5° (1984)
- Heating degree days
- 6
- Cooling degree days
- 250
Morristown in July
Highs average 86°30° and lows 67°19°, with 4.7 in120 mm of precipitation in a typical July.
- Record high
- 103°39° (2012)
- Record low
- 49°9° (1988)
- Heating degree days
- 0
- Cooling degree days
- 361
Morristown in August
Highs average 86°30° and lows 65°18°, with 3.3 in85 mm of precipitation in a typical August.
- Record high
- 100°38° (2007)
- Record low
- 46°8° (1986)
- Heating degree days
- 0
- Cooling degree days
- 323
Morristown in September
Highs average 81°27° and lows 59°15°, with 3.2 in82 mm of precipitation in a typical September.
- Record high
- 96°36° (2024)
- Record low
- 35°2° (1983)
- Heating degree days
- 28
- Cooling degree days
- 166
Morristown in OctoberThis month
Highs average 70°21° and lows 47°8°, with 2.8 in70 mm of precipitation in a typical October.
- Record high
- 95°35° (2019)
- Record low
- 24°−4° (1987)
- Heating degree days
- 231
- Cooling degree days
- 28
Morristown in November
Highs average 59°15° and lows 36°2°, with 3.4 in86 mm of precipitation and 0.2 in0.5 cm of snow in a typical November.
- Record high
- 84°29° (2016)
- Record low
- 14°−10° (2008)
- Heating degree days
- 537
- Cooling degree days
- 2
Morristown in December
Highs average 49°9° and lows 31°−1°, with 4.6 in116 mm of precipitation and 1.6 in4.1 cm of snow in a typical December.
- Record high
- 78°26° (1982)
- Record low
- −4°−20° (1983)
- Heating degree days
- 776
- Cooling degree days
- 0