Dedham Weather in January
Average highs run from 30°F on January 1 to 28°F on January 31, and lows from 12°F to 8°F. Normal precipitation for the month is 3.17 in over about 11 wet days.
January day by day
The normal high and low for each date, and the record, in °F.
- Normal low
- Normal high
- Record high
- Record low
January at a glance
- Average high
- 28°F
- Average low
- 9°F
- Precipitation
- 3.17 in
- Snowfall
- 18.6 in
- Record high
- 58°FJan 6, 2007
- Record low
- -29°FJan 22, 2005
- Chance of a freeze
- 100%
- Daylight
- 8 h 53 min to 9 h 47 min
- Cloud cover
- 70%
- Humidity
- 91%
- Dew point
- 17°F
- Wind
- 7.4 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 |
|---|---|---|---|---|---|---|
| Jan 1 | 30°F | 12°F | 54°F 1966 | -19°F 2014 | 40% | 25% |
| Jan 2 | 30°F | 12°F | 50°F 1979 | -15°F 1968 | 40% | 25% |
| Jan 3 | 30°F | 11°F | 52°F 1979 | -28°F 1999 | 39% | 25% |
| Jan 4 | 29°F | 11°F | 51°F 2000 | -23°F 1981 | 39% | 26% |
| Jan 5 | 29°F | 11°F | 55°F 1993 | -15°F 1981 | 39% | 26% |
| Jan 6 | 29°F | 11°F | 58°F 2007 | -16°F 1996 | 39% | 26% |
| Jan 7 | 29°F | 10°F | 45°F 2007 | -12°F 1999 | 39% | 26% |
| Jan 8 | 29°F | 10°F | 55°F 2008 | -14°F 1968 | 39% | 26% |
| Jan 9 | 28°F | 10°F | 49°F 1978 | -17°F 1971 | 39% | 26% |
| Jan 10 | 28°F | 10°F | 52°F 2016 | -14°F 1971 | 38% | 26% |
| Jan 11 | 28°F | 9°F | 55°F 2020 | -23°F 1976 | 38% | 26% |
| Jan 12 | 28°F | 9°F | 51°F 1980 | -17°F 1968 | 38% | 26% |
| Jan 13 | 28°F | 9°F | 52°F 2023 | -17°F 1971 | 38% | 26% |
| Jan 14 | 28°F | 9°F | 57°F 2006 | -22°F 1957 | 37% | 26% |
| Jan 15 | 28°F | 9°F | 53°F 1995 | -20°F 1957 | 37% | 26% |
| Jan 16 | 28°F | 9°F | 53°F 1995 | -25°F 2009 | 37% | 26% |
| Jan 17 | 28°F | 8°F | 52°F 1995 | -22°F 1974 | 37% | 26% |
| Jan 18 | 28°F | 8°F | 55°F 1990 | -24°F 1957 | 37% | 26% |
| Jan 19 | 27°F | 8°F | 52°F 1996 | -28°F 1971 | 36% | 26% |
| Jan 20 | 27°F | 8°F | 54°F 1996 | -25°F 1971 | 36% | 26% |
| Jan 21 | 27°F | 8°F | 51°F 2006 | -15°F 1994 | 36% | 26% |
| Jan 22 | 27°F | 8°F | 47°F 1957 | -29°F 2005 | 35% | 26% |
| Jan 23 | 27°F | 8°F | 51°F 1957 | -15°F 1976 | 35% | 26% |
| Jan 24 | 27°F | 8°F | 51°F 2019 | -18°F 1976 | 35% | 26% |
| Jan 25 | 28°F | 8°F | 54°F 1999 | -19°F 2009 | 35% | 26% |
| Jan 26 | 28°F | 8°F | 53°F 1986 | -26°F 2009 | 35% | 26% |
| Jan 27 | 28°F | 8°F | 57°F 1974 | -21°F 1994 | 34% | 26% |
| Jan 28 | 28°F | 8°F | 49°F 2006 | -18°F 2026 | 34% | 26% |
| Jan 29 | 28°F | 8°F | 47°F 1996 | -20°F 1971 | 34% | 26% |
| Jan 30 | 28°F | 8°F | 52°F 2013 | -15°F 1993 | 34% | 26% |
| Jan 31 | 28°F | 8°F | 54°F 2013 | -16°F 1962 | 34% | 26% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (EST).
- January 1
- sunrise 7:12 AM, sunset 4:05 PM
- January 31
- sunrise 6:55 AM, sunset 4:42 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USW00014606 (Bangor Intl AP), public domain. Records: NOAA GHCN-Daily, station USW00014606, 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.