Dartmouth Weather in January
Average highs run from 1°C on January 1 to 0°C on January 31, and lows from -5°C to -7°C. Normal precipitation for the month is 102 mm over about 12 wet days.
January day by day
The normal high and low for each date, in °C.
- Normal low
- Normal high
- Reanalysis extreme high
- Reanalysis extreme low
January at a glance
- Average high
- 0°C
- Average low
- -6°C
- Precipitation
- 102 mm
- Reanalysis high
- 11°CJan 15, 2006
- Reanalysis low
- -19°CJan 30, 1993
- Daylight
- 8 h 54 min to 9 h 48 min
- Cloud cover
- 78%
- Humidity
- 87%
- Dew point
- -5°C
- Wind
- 18.7 km/h
Every day of the month
A wet day has at least 1 mm of precipitation in the reanalysis.
| Date | Normal high | Normal low | Reanalysis high | Reanalysis low | Chance wet |
|---|---|---|---|---|---|
| Jan 1 | 1°C | -5°C | 6°C 2012 | -16°C 1997 | 44% |
| Jan 2 | 1°C | -5°C | 9°C 2012 | -16°C 2014 | 43% |
| Jan 3 | 1°C | -5°C | 8°C 2000 | -14°C 2014 | 42% |
| Jan 4 | 1°C | -5°C | 9°C 2018 | -16°C 2014 | 41% |
| Jan 5 | 1°C | -5°C | 10°C 1993 | -15°C 1996 | 42% |
| Jan 6 | 1°C | -5°C | 10°C 2007 | -16°C 1996 | 42% |
| Jan 7 | 1°C | -6°C | 9°C 2007 | -15°C 1996 | 41% |
| Jan 8 | 1°C | -6°C | 10°C 2007 | -15°C 2004 | 42% |
| Jan 9 | 1°C | -6°C | 9°C 1999 | -15°C 2017 | 42% |
| Jan 10 | 1°C | -6°C | 9°C 1999 | -15°C 2004 | 43% |
| Jan 11 | 1°C | -6°C | 8°C 2016 | -16°C 1995 | 44% |
| Jan 12 | 0°C | -6°C | 9°C 2014 | -14°C 1995 | 44% |
| Jan 13 | 0°C | -6°C | 11°C 2018 | -14°C 2001 | 44% |
| Jan 14 | 0°C | -6°C | 8°C 2006 | -18°C 2004 | 43% |
| Jan 15 | 0°C | -6°C | 11°C 2006 | -17°C 2004 | 42% |
| Jan 16 | 0°C | -7°C | 8°C 1995 | -19°C 2004 | 41% |
| Jan 17 | 0°C | -7°C | 8°C 1995 | -16°C 1992 | 42% |
| Jan 18 | 0°C | -7°C | 10°C 2006 | -16°C 2007 | 42% |
| Jan 19 | 0°C | -7°C | 7°C 2015 | -17°C 2005 | 41% |
| Jan 20 | 0°C | -7°C | 9°C 1996 | -15°C 1993 | 40% |
| Jan 21 | 0°C | -7°C | 8°C 2019 | -14°C 2005 | 39% |
| Jan 22 | -1°C | -7°C | 5°C 1997 | -16°C 2005 | 38% |
| Jan 23 | -1°C | -7°C | 7°C 2018 | -16°C 1998 | 39% |
| Jan 24 | -1°C | -7°C | 9°C 1999 | -15°C 2004 | 37% |
| Jan 25 | -1°C | -7°C | 9°C 2019 | -17°C 2004 | 38% |
| Jan 26 | -1°C | -7°C | 8°C 2000 | -19°C 1994 | 37% |
| Jan 27 | -1°C | -7°C | 7°C 2012 | -19°C 1994 | 36% |
| Jan 28 | -1°C | -7°C | 8°C 1996 | -14°C 2004 | 36% |
| Jan 29 | -1°C | -7°C | 7°C 1994 | -13°C 2005 | 38% |
| Jan 30 | 0°C | -7°C | 6°C 2008 | -19°C 1993 | 38% |
| Jan 31 | 0°C | -7°C | 10°C 2013 | -19°C 1993 | 38% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (AST).
- January 1
- sunrise 7:51 AM, sunset 4:45 PM
- January 31
- sunrise 7:34 AM, sunset 5:22 PM
Other months
Sources
Cloud, humidity, wind and sunshine, and temperature and precipitation: 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.