Westernport Weather in December
Average highs run from 48°F on December 1 to 40°F on December 31, and lows from 27°F to 22°F. Normal precipitation for the month is 3.04 in over about 13 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
- 43°F
- Average low
- 25°F
- Precipitation
- 3.04 in
- Snowfall
- 6.6 in
- Record high
- 74°FDec 7, 1951
- Record low
- -32°FDec 30, 1917
- Chance of a freeze
- 100%
- Daylight
- 9 h 36 min to 9 h 26 min
- Cloud cover
- 70%
- Humidity
- 85%
- Dew point
- 27°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 | 48°F | 27°F | 68°F 2006 | -6°F 1929 | 38% | 9% |
| Dec 2 | 47°F | 27°F | 69°F 1982 | 1°F 1930 | 38% | 9% |
| Dec 3 | 47°F | 27°F | 72°F 1982 | -11°F 1976 | 38% | 9% |
| Dec 4 | 47°F | 27°F | 67°F 1941 | -13°F 1940 | 38% | 10% |
| Dec 5 | 46°F | 27°F | 72°F 1982 | 1°F 1974 | 39% | 10% |
| Dec 6 | 46°F | 27°F | 73°F 2013 | -1°F 1974 | 39% | 10% |
| Dec 7 | 46°F | 26°F | 74°F 1951 | -2°F 1977 | 39% | 10% |
| Dec 8 | 45°F | 26°F | 69°F 1966 | -8°F 1977 | 39% | 11% |
| Dec 9 | 45°F | 26°F | 72°F 1966 | -8°F 1960 | 39% | 11% |
| Dec 10 | 45°F | 26°F | 67°F 1971 | -10°F 1910 | 39% | 11% |
| Dec 11 | 44°F | 26°F | 64°F 1971 | -21°F 1968 | 40% | 11% |
| Dec 12 | 44°F | 26°F | 66°F 2020 | -14°F 1962 | 40% | 12% |
| Dec 13 | 44°F | 25°F | 67°F 1923 | -5°F 1937 | 40% | 12% |
| Dec 14 | 44°F | 25°F | 67°F 2015 | -6°F 1904 | 40% | 12% |
| Dec 15 | 43°F | 25°F | 70°F 1971 | -14°F 1943 | 40% | 12% |
| Dec 16 | 43°F | 25°F | 66°F 1984 | -15°F 1943 | 40% | 13% |
| Dec 17 | 43°F | 25°F | 71°F 2021 | -15°F 1910 | 40% | 13% |
| Dec 18 | 43°F | 25°F | 67°F 2016 | -17°F 1919 | 40% | 13% |
| Dec 19 | 42°F | 24°F | 64°F 2021 | -9°F 1989 | 40% | 13% |
| Dec 20 | 42°F | 24°F | 60°F 1903 | -16°F 1960 | 40% | 13% |
| Dec 21 | 42°F | 24°F | 66°F 1949 | -25°F 1942 | 41% | 14% |
| Dec 22 | 42°F | 24°F | 71°F 2013 | -22°F 1935 | 41% | 14% |
| Dec 23 | 41°F | 24°F | 63°F 1933 | -23°F 1960 | 41% | 14% |
| Dec 24 | 41°F | 24°F | 65°F 2015 | -22°F 1989 | 41% | 14% |
| Dec 25 | 41°F | 23°F | 67°F 1982 | -13°F 1935 | 41% | 15% |
| Dec 26 | 41°F | 23°F | 62°F 1982 | -20°F 1914 | 41% | 15% |
| Dec 27 | 41°F | 23°F | 68°F 2008 | -17°F 1950 | 41% | 15% |
| Dec 28 | 41°F | 23°F | 68°F 2015 | -13°F 1950 | 41% | 15% |
| Dec 29 | 40°F | 23°F | 68°F 2025 | -11°F 2017 | 41% | 16% |
| Dec 30 | 40°F | 23°F | 67°F 1984 | -32°F 1917 | 42% | 16% |
| Dec 31 | 40°F | 22°F | 71°F 2022 | -10°F 1963 | 42% | 16% |
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 4:53 PM
- December 31
- sunrise 7:36 AM, sunset 5:02 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00464840 (Keyser 2 Ssw), public domain. Records: NOAA GHCN-Daily, station USC00186620, 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.