Somerset County Weather in December
Average highs run from 34°F on December 1 to 25°F on December 31, and lows from 19°F to 6°F. Normal precipitation for the month is 3.60 in over about 14 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
- 12°F
- Precipitation
- 3.60 in
- Snowfall
- 24.7 in
- Record high
- 59°FDec 6, 2001
- Record low
- -16°FDec 16, 2016
- Chance of a freeze
- 100%
- Daylight
- 8 h 58 min to 8 h 46 min
- Cloud cover
- 68%
- Humidity
- 95%
- Dew point
- 17°F
- Wind
- 6.3 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 | 34°F | 19°F | 57°F 2020 | 3°F 2012 | 44% | 25% |
| Dec 2 | 33°F | 18°F | 46°F 2001 | 4°F 2007 | 44% | 26% |
| Dec 3 | 33°F | 18°F | 48°F 2009 | 3°F 2002 | 44% | 26% |
| Dec 4 | 33°F | 17°F | 46°F 1998 | -2°F 2025 | 44% | 27% |
| Dec 5 | 32°F | 17°F | 51°F 2011 | -3°F 2025 | 44% | 27% |
| Dec 6 | 32°F | 16°F | 59°F 2001 | 3°F 2003 | 44% | 28% |
| Dec 7 | 32°F | 16°F | 49°F 1998 | 0°F 2000 | 44% | 28% |
| Dec 8 | 31°F | 15°F | 45°F 2022 | -5°F 2000 | 44% | 29% |
| Dec 9 | 31°F | 15°F | 46°F 2019 | -11°F 2002 | 44% | 29% |
| Dec 10 | 30°F | 15°F | 47°F 2008 | 3°F 2010 | 44% | 30% |
| Dec 11 | 30°F | 14°F | 52°F 2024 | 2°F 2018 | 44% | 30% |
| Dec 12 | 30°F | 14°F | 51°F 2024 | -2°F 2013 | 43% | 31% |
| Dec 13 | 29°F | 13°F | 49°F 2010 | -7°F 2013 | 43% | 31% |
| Dec 14 | 29°F | 13°F | 47°F 2001 | -10°F 2013 | 43% | 31% |
| Dec 15 | 29°F | 12°F | 48°F 1998 | -11°F 2016 | 43% | 32% |
| Dec 16 | 29°F | 12°F | 42°F 1998 | -16°F 2016 | 43% | 32% |
| Dec 17 | 28°F | 12°F | 54°F 2000 | -9°F 2009 | 43% | 32% |
| Dec 18 | 28°F | 11°F | 55°F 2023 | -2°F 2004 | 43% | 33% |
| Dec 19 | 28°F | 11°F | 51°F 2025 | -6°F 2016 | 43% | 33% |
| Dec 20 | 27°F | 10°F | 42°F 2002 | -12°F 2004 | 43% | 33% |
| Dec 21 | 27°F | 10°F | 51°F 2018 | -14°F 2004 | 43% | 33% |
| Dec 22 | 27°F | 9°F | 50°F 2018 | -1°F 2017 | 42% | 33% |
| Dec 23 | 27°F | 9°F | 50°F 2004 | -5°F 2008 | 42% | 34% |
| Dec 24 | 26°F | 9°F | 49°F 2003 | -3°F 2011 | 42% | 34% |
| Dec 25 | 26°F | 8°F | 54°F 2020 | -4°F 2000 | 42% | 34% |
| Dec 26 | 26°F | 8°F | 50°F 2020 | -5°F 2025 | 42% | 34% |
| Dec 27 | 26°F | 7°F | 40°F 2009 | -12°F 2017 | 42% | 34% |
| Dec 28 | 25°F | 7°F | 46°F 2011 | -16°F 2017 | 42% | 35% |
| Dec 29 | 25°F | 7°F | 52°F 2003 | -13°F 2017 | 42% | 35% |
| Dec 30 | 25°F | 6°F | 47°F 2022 | -11°F 2017 | 41% | 35% |
| Dec 31 | 25°F | 6°F | 50°F 2022 | -13°F 1998 | 41% | 35% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (EST).
- December 1
- sunrise 7:00 AM, sunset 3:58 PM
- December 31
- sunrise 7:20 AM, sunset 4:06 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00170814 (Brassua Dam), public domain. Records: NOAA GHCN-Daily, station USW00094626, 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.