Trumansburg Weather in December
Average highs run from 40°F on December 1 to 32°F on December 31, and lows from 26°F to 17°F. Normal precipitation for the month is 2.64 in over about 18 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
- 35°F
- Average low
- 21°F
- Precipitation
- 2.64 in
- Snowfall
- 12.2 in
- Record high
- 69°FDec 7, 1998
- Record low
- -22°FDec 30, 1917
- Chance of a freeze
- 100%
- Daylight
- 9 h 17 min to 9 h 07 min
- Cloud cover
- 78%
- Humidity
- 90%
- Dew point
- 24°F
- Wind
- 6.5 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 | 40°F | 26°F | 65°F 1998 | -5°F 1936 | 51% | 21% |
| Dec 2 | 40°F | 26°F | 67°F 2006 | -3°F 1989 | 51% | 22% |
| Dec 3 | 39°F | 25°F | 65°F 1998 | 0°F 1940 | 52% | 23% |
| Dec 4 | 39°F | 25°F | 65°F 1941 | -5°F 1966 | 52% | 23% |
| Dec 5 | 39°F | 25°F | 67°F 2012 | -3°F 1966 | 52% | 24% |
| Dec 6 | 38°F | 24°F | 68°F 1982 | -2°F 2025 | 53% | 24% |
| Dec 7 | 38°F | 24°F | 69°F 1998 | -2°F 1969 | 53% | 25% |
| Dec 8 | 38°F | 24°F | 62°F 1951 | -3°F 1970 | 53% | 25% |
| Dec 9 | 37°F | 24°F | 64°F 1966 | -3°F 2025 | 54% | 26% |
| Dec 10 | 37°F | 23°F | 65°F 1946 | -3°F 1982 | 54% | 26% |
| Dec 11 | 37°F | 23°F | 64°F 1966 | -10°F 1958 | 54% | 27% |
| Dec 12 | 36°F | 23°F | 63°F 1979 | -19°F 1988 | 55% | 27% |
| Dec 13 | 36°F | 22°F | 61°F 1923 | -17°F 1988 | 55% | 28% |
| Dec 14 | 36°F | 22°F | 64°F 1901 | -11°F 2005 | 55% | 28% |
| Dec 15 | 35°F | 22°F | 63°F 2015 | -8°F 2005 | 56% | 29% |
| Dec 16 | 35°F | 21°F | 58°F 1971 | -6°F 1943 | 56% | 29% |
| Dec 17 | 35°F | 21°F | 62°F 2021 | -5°F 1919 | 56% | 29% |
| Dec 18 | 35°F | 21°F | 58°F 2000 | -10°F 1919 | 56% | 30% |
| Dec 19 | 34°F | 21°F | 57°F 1924 | -12°F 1973 | 56% | 30% |
| Dec 20 | 34°F | 20°F | 62°F 1895 | -14°F 1942 | 56% | 30% |
| Dec 21 | 34°F | 20°F | 62°F 1895 | -9°F 1962 | 56% | 31% |
| Dec 22 | 34°F | 20°F | 61°F 2013 | -14°F 1944 | 57% | 31% |
| Dec 23 | 33°F | 19°F | 64°F 2013 | -12°F 1944 | 57% | 31% |
| Dec 24 | 33°F | 19°F | 62°F 2015 | -15°F 1989 | 57% | 32% |
| Dec 25 | 33°F | 19°F | 66°F 1932 | -15°F 1969 | 57% | 32% |
| Dec 26 | 33°F | 18°F | 61°F 1895 | -11°F 1980 | 57% | 33% |
| Dec 27 | 32°F | 18°F | 60°F 1964 | -12°F 1993 | 57% | 33% |
| Dec 28 | 32°F | 18°F | 57°F 1936 | -11°F 1960 | 57% | 33% |
| Dec 29 | 32°F | 18°F | 63°F 1984 | -13°F 1933 | 57% | 34% |
| Dec 30 | 32°F | 17°F | 64°F 1984 | -22°F 1917 | 57% | 34% |
| Dec 31 | 32°F | 17°F | 60°F 2022 | -14°F 1917 | 57% | 34% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (EST).
- December 1
- sunrise 7:17 AM, sunset 4:34 PM
- December 31
- sunrise 7:36 AM, sunset 4:43 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00305233 (Mecklenburg 4SW), public domain. Records: NOAA GHCN-Daily, station USC00304174, 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.