Seymour Weather in December
Average highs run from 56°F on December 1 to 49°F on December 31, and lows from 32°F to 28°F. Normal precipitation for the month is 4.90 in over about 12 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
- 52°F
- Average low
- 30°F
- Precipitation
- 4.90 in
- Snowfall
- 0.2 in
- Record high
- 78°FDec 4, 1982
- Record low
- -5°FDec 25, 1983
- Chance of a freeze
- 100%
- Daylight
- 9 h 54 min to 9 h 46 min
- Cloud cover
- 69%
- Humidity
- 82%
- Dew point
- 34°F
- Wind
- 5.6 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 | 56°F | 32°F | 74°F 1991 | 20°F 2023 | 34% | 1% |
| Dec 2 | 56°F | 32°F | 74°F 1982 | 18°F 1969 | 35% | 1% |
| Dec 3 | 55°F | 32°F | 77°F 1982 | 20°F 1969 | 35% | 1% |
| Dec 4 | 55°F | 32°F | 78°F 1982 | 15°F 1989 | 35% | 1% |
| Dec 5 | 55°F | 31°F | 72°F 2011 | 16°F 1969 | 35% | 1% |
| Dec 6 | 54°F | 31°F | 71°F 1999 | 18°F 1969 | 36% | 1% |
| Dec 7 | 54°F | 31°F | 74°F 1998 | 9°F 1984 | 36% | 1% |
| Dec 8 | 54°F | 31°F | 74°F 1998 | 10°F 1984 | 36% | 1% |
| Dec 9 | 54°F | 31°F | 70°F 2012 | 12°F 2006 | 36% | 1% |
| Dec 10 | 53°F | 31°F | 70°F 2012 | 7°F 1995 | 37% | 1% |
| Dec 11 | 53°F | 31°F | 73°F 2007 | 10°F 1995 | 37% | 1% |
| Dec 12 | 53°F | 30°F | 76°F 2007 | 12°F 1982 | 37% | 1% |
| Dec 13 | 53°F | 30°F | 69°F 2015 | 15°F 1982 | 37% | 1% |
| Dec 14 | 52°F | 30°F | 71°F 2015 | 9°F 2010 | 37% | 1% |
| Dec 15 | 52°F | 30°F | 72°F 1984 | 10°F 2010 | 37% | 1% |
| Dec 16 | 52°F | 30°F | 72°F 1984 | 5°F 1989 | 38% | 1% |
| Dec 17 | 52°F | 30°F | 72°F 2021 | 6°F 1989 | 38% | 1% |
| Dec 18 | 51°F | 30°F | 68°F 1984 | 14°F 2000 | 38% | 1% |
| Dec 19 | 51°F | 30°F | 72°F 2021 | 15°F 1981 | 38% | 1% |
| Dec 20 | 51°F | 29°F | 67°F 1984 | 5°F 1981 | 38% | 1% |
| Dec 21 | 51°F | 29°F | 63°F 1988 | 6°F 2004 | 38% | 1% |
| Dec 22 | 51°F | 29°F | 74°F 2013 | 1°F 1989 | 38% | 1% |
| Dec 23 | 51°F | 29°F | 67°F 2015 | -1°F 1989 | 38% | 1% |
| Dec 24 | 50°F | 29°F | 73°F 2015 | 1°F 1989 | 38% | 1% |
| Dec 25 | 50°F | 29°F | 75°F 1982 | -5°F 1983 | 37% | 2% |
| Dec 26 | 50°F | 29°F | 73°F 2015 | -4°F 1983 | 37% | 2% |
| Dec 27 | 50°F | 29°F | 77°F 2015 | 5°F 1983 | 37% | 2% |
| Dec 28 | 50°F | 28°F | 77°F 2015 | 10°F 2022 | 37% | 2% |
| Dec 29 | 50°F | 28°F | 77°F 2019 | 15°F 2004 | 37% | 2% |
| Dec 30 | 49°F | 28°F | 71°F 1984 | 7°F 1983 | 37% | 2% |
| Dec 31 | 49°F | 28°F | 71°F 1990 | 6°F 1983 | 37% | 2% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (EST).
- December 1
- sunrise 7:27 AM, sunset 5:21 PM
- December 31
- sunrise 7:45 AM, sunset 5:31 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00408179 (Sevierville), public domain. Records: NOAA GHCN-Daily, station USC00404946, 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.