Great Falls Weather in January
Average highs run from 53°F on January 1 to 54°F on January 31, and lows from 32°F to 31°F. Normal precipitation for the month is 3.99 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
- 53°F
- Average low
- 31°F
- Precipitation
- 3.99 in
- Record high
- 80°FJan 28, 1944
- Record low
- -4°FJan 21, 1985
- Chance of a freeze
- 100%
- Daylight
- 9 h 53 min to 10 h 30 min
- Cloud cover
- 57%
- Humidity
- 82%
- Dew point
- 35°F
- Wind
- 4.5 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 | 53°F | 32°F | 74°F 1952 | 8°F 1918 | 35% | 0% |
| Jan 2 | 53°F | 32°F | 78°F 1916 | 6°F 1928 | 35% | 0% |
| Jan 3 | 53°F | 31°F | 74°F 1997 | 10°F 1918 | 35% | 0% |
| Jan 4 | 53°F | 31°F | 76°F 1950 | 8°F 1918 | 34% | 0% |
| Jan 5 | 53°F | 31°F | 75°F 1950 | 7°F 1920 | 34% | 0% |
| Jan 6 | 53°F | 31°F | 73°F 1950 | 6°F 1924 | 34% | 0% |
| Jan 7 | 53°F | 31°F | 72°F 1955 | 8°F 2018 | 34% | 0% |
| Jan 8 | 53°F | 31°F | 75°F 1907 | 8°F 1970 | 34% | 0% |
| Jan 9 | 53°F | 31°F | 74°F 1930 | 4°F 1970 | 34% | 0% |
| Jan 10 | 53°F | 31°F | 77°F 1949 | 4°F 1970 | 34% | 0% |
| Jan 11 | 53°F | 31°F | 79°F 1949 | 3°F 1982 | 34% | 0% |
| Jan 12 | 53°F | 31°F | 75°F 1916 | 10°F 1917 | 34% | 0% |
| Jan 13 | 53°F | 31°F | 77°F 1907 | 7°F 1918 | 34% | 0% |
| Jan 14 | 53°F | 31°F | 78°F 1907 | 6°F 1912 | 34% | 0% |
| Jan 15 | 53°F | 31°F | 78°F 1928 | 10°F 1948 | 34% | 0% |
| Jan 16 | 53°F | 31°F | 76°F 1950 | 6°F 1963 | 34% | 0% |
| Jan 17 | 53°F | 31°F | 77°F 1928 | 5°F 1977 | 34% | 0% |
| Jan 18 | 53°F | 31°F | 74°F 1974 | 12°F 2018 | 34% | 0% |
| Jan 19 | 53°F | 31°F | 70°F 1929 | 6°F 1994 | 34% | 0% |
| Jan 20 | 53°F | 31°F | 73°F 1927 | 6°F 1985 | 34% | 0% |
| Jan 21 | 53°F | 31°F | 75°F 1933 | -4°F 1985 | 34% | 0% |
| Jan 22 | 53°F | 31°F | 75°F 1937 | 6°F 1985 | 34% | 0% |
| Jan 23 | 53°F | 31°F | 77°F 1909 | 12°F 1936 | 34% | 0% |
| Jan 24 | 53°F | 31°F | 75°F 1950 | 6°F 2003 | 34% | 0% |
| Jan 25 | 53°F | 31°F | 77°F 1909 | 12°F 2014 | 34% | 0% |
| Jan 26 | 54°F | 31°F | 75°F 1949 | 6°F 1940 | 34% | 0% |
| Jan 27 | 54°F | 31°F | 78°F 1934 | 6°F 1940 | 34% | 0% |
| Jan 28 | 54°F | 31°F | 80°F 1944 | 4°F 1940 | 34% | 0% |
| Jan 29 | 54°F | 31°F | 80°F 2002 | 10°F 1940 | 34% | 0% |
| Jan 30 | 54°F | 31°F | 79°F 2002 | 2°F 1966 | 34% | 0% |
| Jan 31 | 54°F | 31°F | 79°F 1975 | 1°F 1936 | 34% | 0% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (EST).
- January 1
- sunrise 7:31 AM, sunset 5:24 PM
- January 31
- sunrise 7:22 AM, sunset 5:52 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00389327 (Winnsboro), public domain. Records: NOAA GHCN-Daily, station USC00389350, 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 2026-09-25. Sun and moon: computed with the NOAA solar equations and Meeus.