Big Sky Weather in January
Average highs run from 28°F on January 1 to 32°F on January 31, and lows from 8°F to 8°F. Normal precipitation for the month is 1.83 in over about 13 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
- 30°F
- Average low
- 9°F
- Precipitation
- 1.83 in
- Snowfall
- 6.5 in
- Record high
- 61°FJan 22, 1981
- Record low
- -43°FJan 17, 1930
- Chance of a freeze
- 100%
- Daylight
- 8 h 49 min to 9 h 45 min
- Cloud cover
- 69%
- Humidity
- 95%
- Dew point
- 15°F
- Wind
- 8.5 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 | 28°F | 8°F | 53°F 2026 | -26°F 1942 | 46% | 16% |
| Jan 2 | 28°F | 8°F | 57°F 1918 | -20°F 1924 | 46% | 16% |
| Jan 3 | 28°F | 8°F | 55°F 1918 | -25°F 1950 | 45% | 16% |
| Jan 4 | 28°F | 8°F | 54°F 1918 | -26°F 1942 | 45% | 16% |
| Jan 5 | 28°F | 8°F | 52°F 2001 | -30°F 1979 | 45% | 16% |
| Jan 6 | 28°F | 8°F | 52°F 1954 | -25°F 1979 | 45% | 16% |
| Jan 7 | 29°F | 9°F | 55°F 1945 | -31°F 1937 | 45% | 16% |
| Jan 8 | 29°F | 9°F | 50°F 2001 | -31°F 1937 | 44% | 16% |
| Jan 9 | 29°F | 9°F | 54°F 1953 | -29°F 1973 | 44% | 16% |
| Jan 10 | 29°F | 9°F | 52°F 1941 | -27°F 1949 | 43% | 16% |
| Jan 11 | 29°F | 9°F | 53°F 1953 | -28°F 1963 | 43% | 16% |
| Jan 12 | 29°F | 9°F | 55°F 1953 | -30°F 1963 | 43% | 16% |
| Jan 13 | 30°F | 9°F | 52°F 1983 | -40°F 2024 | 42% | 16% |
| Jan 14 | 30°F | 9°F | 57°F 2026 | -35°F 2024 | 42% | 15% |
| Jan 15 | 30°F | 9°F | 57°F 2026 | -30°F 2024 | 42% | 15% |
| Jan 16 | 30°F | 9°F | 55°F 2026 | -29°F 1930 | 41% | 15% |
| Jan 17 | 30°F | 9°F | 53°F 1961 | -43°F 1930 | 41% | 15% |
| Jan 18 | 30°F | 9°F | 54°F 1920 | -38°F 1943 | 41% | 15% |
| Jan 19 | 30°F | 9°F | 52°F 1920 | -31°F 1963 | 40% | 15% |
| Jan 20 | 30°F | 9°F | 55°F 2005 | -37°F 1935 | 40% | 15% |
| Jan 21 | 31°F | 9°F | 53°F 2005 | -29°F 1927 | 40% | 15% |
| Jan 22 | 31°F | 9°F | 61°F 1981 | -27°F 1962 | 40% | 15% |
| Jan 23 | 31°F | 9°F | 57°F 1981 | -34°F 1929 | 39% | 15% |
| Jan 24 | 31°F | 9°F | 60°F 2005 | -29°F 1949 | 39% | 15% |
| Jan 25 | 31°F | 9°F | 54°F 1995 | -30°F 1949 | 39% | 15% |
| Jan 26 | 31°F | 8°F | 53°F 1935 | -32°F 1957 | 39% | 15% |
| Jan 27 | 31°F | 8°F | 59°F 2015 | -29°F 1957 | 39% | 15% |
| Jan 28 | 31°F | 8°F | 59°F 2015 | -32°F 1929 | 39% | 15% |
| Jan 29 | 31°F | 8°F | 58°F 1931 | -31°F 1951 | 39% | 15% |
| Jan 30 | 32°F | 8°F | 58°F 1935 | -25°F 1979 | 39% | 15% |
| Jan 31 | 32°F | 8°F | 60°F 2024 | -28°F 1918 | 39% | 15% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (MST).
- January 1
- sunrise 8:05 AM, sunset 4:54 PM
- January 31
- sunrise 7:47 AM, sunset 5:32 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00240775 (Big Sky 2WNW), public domain. Records: NOAA GHCN-Daily, station USC00242793, 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.