Tyngsboro Weather in December
Average highs run from 45°F on December 1 to 36°F on December 31, and lows from 26°F to 18°F. Normal precipitation for the month is 4.54 in over about 11 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
- 40°F
- Average low
- 22°F
- Precipitation
- 4.54 in
- Snowfall
- 13.4 in
- Record high
- 73°FDec 7, 2001
- Record low
- -24°FDec 30, 1933
- Chance of a freeze
- 100%
- Daylight
- 9 h 17 min to 9 h 06 min
- Cloud cover
- 63%
- Humidity
- 86%
- Dew point
- 28°F
- Wind
- 6.7 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 | 45°F | 26°F | 66°F 1927 | 3°F 1936 | 36% | 12% |
| Dec 2 | 44°F | 26°F | 68°F 2006 | -2°F 1938 | 36% | 13% |
| Dec 3 | 44°F | 26°F | 68°F 1932 | -18°F 1940 | 36% | 13% |
| Dec 4 | 44°F | 25°F | 68°F 1982 | 0°F 1949 | 36% | 14% |
| Dec 5 | 43°F | 25°F | 68°F 1941 | 0°F 1926 | 36% | 14% |
| Dec 6 | 43°F | 25°F | 68°F 1982 | -8°F 1901 | 36% | 15% |
| Dec 7 | 43°F | 24°F | 73°F 2001 | -10°F 1901 | 36% | 15% |
| Dec 8 | 42°F | 24°F | 73°F 1998 | -11°F 1934 | 36% | 16% |
| Dec 9 | 42°F | 24°F | 61°F 1889 | -13°F 1902 | 36% | 16% |
| Dec 10 | 42°F | 24°F | 63°F 1907 | -14°F 1902 | 36% | 16% |
| Dec 11 | 41°F | 23°F | 64°F 1911 | -14°F 1958 | 36% | 17% |
| Dec 12 | 41°F | 23°F | 65°F 1979 | -10°F 1977 | 36% | 17% |
| Dec 13 | 41°F | 23°F | 64°F 1984 | -2°F 1945 | 36% | 17% |
| Dec 14 | 40°F | 23°F | 60°F 1901 | -15°F 1898 | 36% | 18% |
| Dec 15 | 40°F | 22°F | 63°F 1975 | -6°F 1902 | 36% | 18% |
| Dec 16 | 40°F | 22°F | 61°F 2008 | -8°F 1943 | 36% | 18% |
| Dec 17 | 39°F | 22°F | 60°F 2021 | -15°F 1951 | 35% | 19% |
| Dec 18 | 39°F | 22°F | 60°F 2000 | -12°F 1951 | 35% | 19% |
| Dec 19 | 39°F | 21°F | 62°F 2023 | -13°F 1942 | 35% | 19% |
| Dec 20 | 38°F | 21°F | 62°F 1957 | -14°F 1942 | 35% | 20% |
| Dec 21 | 38°F | 21°F | 62°F 1957 | -11°F 1942 | 35% | 20% |
| Dec 22 | 38°F | 21°F | 64°F 1949 | -16°F 1958 | 35% | 20% |
| Dec 23 | 38°F | 20°F | 65°F 1990 | -10°F 1955 | 35% | 21% |
| Dec 24 | 37°F | 20°F | 61°F 2004 | -12°F 1989 | 35% | 21% |
| Dec 25 | 37°F | 20°F | 68°F 2015 | -13°F 1980 | 35% | 21% |
| Dec 26 | 37°F | 20°F | 66°F 2015 | -15°F 1980 | 35% | 22% |
| Dec 27 | 37°F | 19°F | 64°F 2015 | -18°F 1914 | 35% | 22% |
| Dec 28 | 36°F | 19°F | 64°F 2015 | -20°F 1951 | 35% | 22% |
| Dec 29 | 36°F | 19°F | 64°F 1982 | -20°F 1951 | 35% | 22% |
| Dec 30 | 36°F | 19°F | 59°F 2003 | -24°F 1933 | 35% | 23% |
| Dec 31 | 36°F | 18°F | 63°F 1932 | -22°F 1963 | 35% | 23% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (EST).
- December 1
- sunrise 6:56 AM, sunset 4:13 PM
- December 31
- sunrise 7:16 AM, sunset 4:22 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00194313 (Lowell), public domain. Records: NOAA GHCN-Daily, station USC00275712, 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.