Greenwich Weather in December
Average highs run from 43°F on December 1 to 35°F on December 31, and lows from 23°F to 15°F. Normal precipitation for the month is 3.68 in.
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
- 38°F
- Average low
- 19°F
- Precipitation
- 3.68 in
- Snowfall
- 15.1 in
- Record high
- 69°FDec 4, 1982
- Record low
- -29°FDec 26, 1980
- Chance of a freeze
- 100%
- Daylight
- 9 h 14 min to 9 h 03 min
- Cloud cover
- 72%
- Humidity
- 89%
- Dew point
- 24°F
- Wind
- 5.1 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 | 43°F | 23°F | 61°F 2001 | 3°F 1989 | 14% | |
| Dec 2 | 42°F | 23°F | 62°F 1998 | 1°F 1946 | 14% | |
| Dec 3 | 42°F | 23°F | 58°F 2009 | -16°F 1976 | 14% | |
| Dec 4 | 42°F | 22°F | 69°F 1982 | -4°F 1989 | 15% | |
| Dec 5 | 41°F | 22°F | 64°F 2001 | -6°F 1989 | 15% | |
| Dec 6 | 41°F | 22°F | 63°F 2001 | -4°F 2007 | 16% | |
| Dec 7 | 41°F | 22°F | 67°F 1998 | 0°F 1964 | 16% | |
| Dec 8 | 40°F | 21°F | 59°F 1951 | -10°F 1977 | 16% | |
| Dec 9 | 40°F | 21°F | 56°F 1946 | -7°F 2025 | 17% | |
| Dec 10 | 40°F | 21°F | 61°F 1966 | -15°F 1977 | 17% | |
| Dec 11 | 39°F | 20°F | 64°F 1966 | -21°F 1977 | 17% | |
| Dec 12 | 39°F | 20°F | 56°F 1979 | -23°F 1977 | 18% | |
| Dec 13 | 39°F | 20°F | 56°F 1946 | -12°F 1995 | 18% | |
| Dec 14 | 39°F | 20°F | 54°F 2015 | -17°F 2005 | 18% | |
| Dec 15 | 38°F | 19°F | 57°F 2015 | -14°F 2005 | 19% | |
| Dec 16 | 38°F | 19°F | 57°F 2021 | -10°F 1951 | 19% | |
| Dec 17 | 38°F | 19°F | 60°F 2021 | -18°F 2013 | 19% | |
| Dec 18 | 38°F | 18°F | 54°F 2023 | -13°F 2007 | 20% | |
| Dec 19 | 37°F | 18°F | 55°F 2025 | -18°F 1973 | 20% | |
| Dec 20 | 37°F | 18°F | 60°F 1957 | -23°F 1980 | 20% | |
| Dec 21 | 37°F | 17°F | 59°F 1957 | -21°F 1980 | 20% | |
| Dec 22 | 37°F | 17°F | 57°F 1949 | -19°F 1989 | 20% | |
| Dec 23 | 36°F | 17°F | 61°F 1990 | -23°F 1989 | 21% | |
| Dec 24 | 36°F | 17°F | 68°F 2015 | -23°F 1989 | 21% | |
| Dec 25 | 36°F | 16°F | 62°F 1964 | -27°F 1980 | 21% | |
| Dec 26 | 36°F | 16°F | 56°F 1964 | -29°F 1980 | 22% | |
| Dec 27 | 36°F | 16°F | 55°F 1949 | -18°F 1989 | 22% | |
| Dec 28 | 35°F | 15°F | 57°F 1982 | -20°F 2017 | 22% | |
| Dec 29 | 35°F | 15°F | 62°F 1984 | -19°F 2017 | 23% | |
| Dec 30 | 35°F | 15°F | 54°F 2024 | -21°F 2017 | 23% | |
| Dec 31 | 35°F | 15°F | 53°F 1965 | -18°F 1963 | 23% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (EST).
- December 1
- sunrise 7:06 AM, sunset 4:20 PM
- December 31
- sunrise 7:26 AM, sunset 4:29 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00301068 (Buskirk), public domain. Records: NOAA GHCN-Daily, station USW00014750, 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.