New Britain Weather in December
Average highs run from 46°F on December 1 to 38°F on December 31, and lows from 30°F to 22°F. Normal precipitation for the month is 3.75 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
- 42°F
- Average low
- 26°F
- Precipitation
- 3.75 in
- Snowfall
- 8.3 in
- Record high
- 75°FDec 8, 1998
- Record low
- -13°FDec 26, 1980
- Chance of a freeze
- 100%
- Daylight
- 9 h 23 min to 9 h 13 min
- Cloud cover
- 63%
- Humidity
- 86%
- Dew point
- 28°F
- Wind
- 5.8 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 | 46°F | 30°F | 65°F 2006 | 8°F 1976 | 36% | 3% |
| Dec 2 | 46°F | 30°F | 68°F 2006 | 4°F 1989 | 36% | 4% |
| Dec 3 | 45°F | 29°F | 64°F 2009 | 0°F 1976 | 36% | 4% |
| Dec 4 | 45°F | 29°F | 65°F 2009 | 2°F 1976 | 36% | 4% |
| Dec 5 | 45°F | 29°F | 70°F 1998 | 0°F 1995 | 37% | 4% |
| Dec 6 | 44°F | 28°F | 68°F 1982 | 2°F 1995 | 37% | 5% |
| Dec 7 | 44°F | 28°F | 68°F 1998 | 7°F 1995 | 37% | 5% |
| Dec 8 | 44°F | 28°F | 75°F 1998 | 3°F 1964 | 37% | 5% |
| Dec 9 | 44°F | 28°F | 60°F 1966 | 3°F 1989 | 37% | 5% |
| Dec 10 | 43°F | 27°F | 64°F 1966 | 1°F 1968 | 37% | 5% |
| Dec 11 | 43°F | 27°F | 61°F 1966 | 2°F 1968 | 37% | 6% |
| Dec 12 | 43°F | 27°F | 63°F 2024 | -3°F 1988 | 37% | 6% |
| Dec 13 | 42°F | 27°F | 66°F 1979 | -3°F 1988 | 37% | 6% |
| Dec 14 | 42°F | 26°F | 63°F 1984 | -1°F 1976 | 37% | 6% |
| Dec 15 | 42°F | 26°F | 63°F 2015 | 1°F 1976 | 37% | 7% |
| Dec 16 | 41°F | 26°F | 62°F 2008 | 0°F 1995 | 37% | 7% |
| Dec 17 | 41°F | 26°F | 65°F 2021 | 1°F 1995 | 37% | 7% |
| Dec 18 | 41°F | 25°F | 61°F 2000 | -3°F 1980 | 37% | 7% |
| Dec 19 | 41°F | 25°F | 61°F 2023 | -2°F 2019 | 37% | 7% |
| Dec 20 | 40°F | 25°F | 58°F 1990 | -1°F 1963 | 37% | 8% |
| Dec 21 | 40°F | 25°F | 60°F 1990 | -3°F 1962 | 37% | 8% |
| Dec 22 | 40°F | 24°F | 62°F 2018 | -2°F 1962 | 36% | 8% |
| Dec 23 | 40°F | 24°F | 65°F 2013 | -2°F 2024 | 36% | 8% |
| Dec 24 | 40°F | 24°F | 62°F 1990 | 0°F 2024 | 36% | 8% |
| Dec 25 | 39°F | 24°F | 70°F 2015 | -8°F 1989 | 36% | 9% |
| Dec 26 | 39°F | 24°F | 61°F 1964 | -13°F 1980 | 36% | 9% |
| Dec 27 | 39°F | 23°F | 60°F 1982 | -10°F 1980 | 36% | 9% |
| Dec 28 | 39°F | 23°F | 60°F 2016 | 0°F 1993 | 36% | 9% |
| Dec 29 | 39°F | 23°F | 60°F 1982 | -9°F 2017 | 36% | 9% |
| Dec 30 | 38°F | 23°F | 71°F 1984 | -2°F 1987 | 36% | 10% |
| Dec 31 | 38°F | 22°F | 66°F 2022 | -12°F 1962 | 36% | 10% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (EST).
- December 1
- sunrise 6:59 AM, sunset 4:22 PM
- December 31
- sunrise 7:18 AM, sunset 4:31 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USW00014752 (Hartford Brainard Fld), public domain. Records: NOAA GHCN-Daily, station USC00060973, 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.