Morristown Weather in December
Average highs run from 35°F on December 1 to 25°F on December 31, and lows from 18°F to 8°F. Normal precipitation for the month is 1.24 in over about 7 wet days.
December day by day
The normal high and low for each date, and the record, in °F.
- Normal low
- Normal high
- Record high
- Record low
December at a glance
- Average high
- 29°F
- Average low
- 13°F
- Precipitation
- 1.24 in
- Snowfall
- 10.1 in
- Record high
- 69°FDec 20, 1923
- Record low
- -36°FDec 19, 1983
- Chance of a freeze
- 100%
- Daylight
- 9 h 07 min to 8 h 56 min
- Cloud cover
- 66%
- Humidity
- 87%
- Dew point
- 17°F
- Wind
- 11.6 mph
Every day of the month
A wet day has at least 0.01 inch of precipitation; snow means at least 0.1 inch of snowfall.
| Date | Normal high | Normal low | Record high | Record low | Chance wet | Chance of snow |
|---|---|---|---|---|---|---|
| Dec 1 | 35°F | 18°F | 58°F 1962 | -10°F 1919 | 21% | 11% |
| Dec 2 | 34°F | 18°F | 68°F 1998 | -14°F 1897 | 21% | 11% |
| Dec 3 | 34°F | 17°F | 61°F 1982 | -23°F 1940 | 22% | 12% |
| Dec 4 | 33°F | 17°F | 60°F 1998 | -13°F 1991 | 22% | 12% |
| Dec 5 | 33°F | 16°F | 62°F 2001 | -12°F 1991 | 22% | 12% |
| Dec 6 | 32°F | 16°F | 62°F 2001 | -17°F 1972 | 22% | 13% |
| Dec 7 | 32°F | 16°F | 53°F 1923 | -22°F 1972 | 22% | 13% |
| Dec 8 | 32°F | 15°F | 53°F 1946 | -19°F 1927 | 22% | 13% |
| Dec 9 | 31°F | 15°F | 59°F 1939 | -17°F 1947 | 22% | 14% |
| Dec 10 | 31°F | 15°F | 55°F 1979 | -21°F 1977 | 22% | 14% |
| Dec 11 | 30°F | 14°F | 56°F 1913 | -15°F 1917 | 22% | 14% |
| Dec 12 | 30°F | 14°F | 57°F 1968 | -16°F 1903 | 22% | 14% |
| Dec 13 | 30°F | 14°F | 49°F 1913 | -27°F 1903 | 22% | 15% |
| Dec 14 | 29°F | 13°F | 56°F 1923 | -29°F 1901 | 22% | 15% |
| Dec 15 | 29°F | 13°F | 54°F 1998 | -27°F 1901 | 22% | 15% |
| Dec 16 | 29°F | 13°F | 63°F 1923 | -20°F 1914 | 22% | 15% |
| Dec 17 | 28°F | 12°F | 57°F 1939 | -23°F 1950 | 22% | 15% |
| Dec 18 | 28°F | 12°F | 58°F 1923 | -29°F 1983 | 22% | 15% |
| Dec 19 | 28°F | 12°F | 55°F 1923 | -36°F 1983 | 22% | 16% |
| Dec 20 | 27°F | 11°F | 69°F 1923 | -35°F 1983 | 22% | 16% |
| Dec 21 | 27°F | 11°F | 52°F 1941 | -30°F 1983 | 22% | 16% |
| Dec 22 | 27°F | 11°F | 46°F 1918 | -23°F 1989 | 22% | 16% |
| Dec 23 | 26°F | 10°F | 54°F 1917 | -28°F 1983 | 22% | 16% |
| Dec 24 | 26°F | 10°F | 50°F 1936 | -30°F 1983 | 22% | 16% |
| Dec 25 | 26°F | 10°F | 62°F 1923 | -27°F 2000 | 22% | 16% |
| Dec 26 | 26°F | 9°F | 56°F 1936 | -27°F 2000 | 22% | 16% |
| Dec 27 | 25°F | 9°F | 48°F 1959 | -28°F 1950 | 22% | 16% |
| Dec 28 | 25°F | 9°F | 46°F 1984 | -23°F 1924 | 22% | 17% |
| Dec 29 | 25°F | 8°F | 45°F 1897 | -22°F 1917 | 22% | 17% |
| Dec 30 | 25°F | 8°F | 51°F 1999 | -21°F 1976 | 22% | 17% |
| Dec 31 | 25°F | 8°F | 51°F 1999 | -30°F 1946 | 22% | 17% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (CST).
- December 1
- sunrise 7:29 AM, sunset 4:36 PM
- December 31
- sunrise 7:49 AM, sunset 4:45 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00212721 (Faribault), public domain. Records: NOAA GHCN-Daily, station USC00212721, every year on file, quality-flagged values removed. Cloud, humidity, wind and sunshine: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.