Belfast Weather in January
Average highs run from 39°F on January 1 to 38°F on January 31, and lows from 23°F to 21°F. Normal precipitation for the month is 3.67 in.
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
- 38°F
- Average low
- 22°F
- Precipitation
- 3.67 in
- Snowfall
- 9.9 in
- Record high
- 72°FJan 26, 1950
- Record low
- -15°FJan 21, 1994
- Chance of a freeze
- 100%
- Daylight
- 9 h 19 min to 10 h 06 min
- Cloud cover
- 73%
- Humidity
- 89%
- Dew point
- 21°F
- Wind
- 6.5 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 | 39°F | 23°F | 62°F 2005 | -3°F 1968 | 9% | |
| Jan 2 | 39°F | 23°F | 59°F 1979 | -7°F 1968 | 10% | |
| Jan 3 | 38°F | 23°F | 63°F 1997 | -3°F 2014 | 10% | |
| Jan 4 | 38°F | 23°F | 66°F 1950 | -4°F 1981 | 10% | |
| Jan 5 | 38°F | 23°F | 62°F 1993 | 1°F 2014 | 10% | |
| Jan 6 | 38°F | 23°F | 70°F 2007 | -4°F 1968 | 10% | |
| Jan 7 | 38°F | 23°F | 63°F 2008 | -1°F 2014 | 10% | |
| Jan 8 | 38°F | 22°F | 67°F 1998 | -1°F 1968 | 11% | |
| Jan 9 | 38°F | 22°F | 65°F 1998 | -5°F 1981 | 11% | |
| Jan 10 | 38°F | 22°F | 63°F 2016 | 0°F 1982 | 11% | |
| Jan 11 | 38°F | 22°F | 68°F 2020 | -7°F 1988 | 11% | |
| Jan 12 | 38°F | 22°F | 68°F 2020 | -6°F 1968 | 11% | |
| Jan 13 | 38°F | 22°F | 64°F 2005 | -3°F 1981 | 11% | |
| Jan 14 | 37°F | 22°F | 69°F 1995 | 1°F 1974 | 11% | |
| Jan 15 | 37°F | 21°F | 68°F 1995 | -6°F 1948 | 11% | |
| Jan 16 | 37°F | 21°F | 62°F 1995 | 0°F 1994 | 12% | |
| Jan 17 | 37°F | 21°F | 61°F 1990 | -8°F 1982 | 12% | |
| Jan 18 | 37°F | 21°F | 63°F 2006 | -10°F 1954 | 12% | |
| Jan 19 | 37°F | 21°F | 60°F 1949 | -11°F 1994 | 12% | |
| Jan 20 | 37°F | 21°F | 56°F 1951 | -6°F 1994 | 12% | |
| Jan 21 | 37°F | 21°F | 63°F 1959 | -15°F 1994 | 12% | |
| Jan 22 | 37°F | 21°F | 63°F 1959 | -12°F 1961 | 12% | |
| Jan 23 | 37°F | 21°F | 62°F 1999 | -9°F 1961 | 12% | |
| Jan 24 | 38°F | 21°F | 66°F 1967 | -6°F 1948 | 12% | |
| Jan 25 | 38°F | 21°F | 64°F 1967 | -4°F 1963 | 12% | |
| Jan 26 | 38°F | 21°F | 72°F 1950 | -3°F 1948 | 12% | |
| Jan 27 | 38°F | 21°F | 66°F 1974 | -5°F 1994 | 12% | |
| Jan 28 | 38°F | 20°F | 60°F 2002 | -6°F 1988 | 11% | |
| Jan 29 | 38°F | 20°F | 66°F 2002 | -9°F 1963 | 11% | |
| Jan 30 | 38°F | 20°F | 66°F 2013 | -1°F 2026 | 11% | |
| Jan 31 | 38°F | 21°F | 60°F 1974 | -9°F 1948 | 11% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (EST).
- January 1
- sunrise 7:25 AM, sunset 4:44 PM
- January 31
- sunrise 7:12 AM, sunset 5:18 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00286979 (Phillipsburg-Easton Brg), public domain. Records: NOAA GHCN-Daily, station USW00014737, 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.