Dillon Weather in January
Average highs run from 32°F on January 1 to 35°F on January 31, and lows from 13°F to 15°F. Normal precipitation for the month is 0.31 in over about 4 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
- 33°F
- Average low
- 15°F
- Precipitation
- 0.31 in
- Snowfall
- 1.7 in
- Record high
- 58°FJan 22, 1981
- Record low
- -41°FJan 13, 2024
- Chance of a freeze
- 100%
- Daylight
- 8 h 49 min to 9 h 45 min
- Cloud cover
- 65%
- Humidity
- 95%
- Dew point
- 11°F
- Wind
- 8.3 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 | 32°F | 13°F | 46°F 1998 | -29°F 1942 | 15% | 5% |
| Jan 2 | 32°F | 13°F | 48°F 2026 | -19°F 1968 | 15% | 5% |
| Jan 3 | 32°F | 13°F | 51°F 2026 | -25°F 1950 | 14% | 5% |
| Jan 4 | 32°F | 13°F | 47°F 2012 | -26°F 1942 | 14% | 5% |
| Jan 5 | 32°F | 13°F | 52°F 2012 | -29°F 1979 | 14% | 5% |
| Jan 6 | 32°F | 14°F | 50°F 1954 | -26°F 1974 | 14% | 4% |
| Jan 7 | 32°F | 14°F | 52°F 1945 | -23°F 1979 | 14% | 4% |
| Jan 8 | 33°F | 14°F | 50°F 1966 | -27°F 1973 | 14% | 4% |
| Jan 9 | 33°F | 14°F | 53°F 1953 | -29°F 1973 | 14% | 4% |
| Jan 10 | 33°F | 14°F | 52°F 1990 | -29°F 1949 | 14% | 4% |
| Jan 11 | 33°F | 14°F | 53°F 1953 | -27°F 1963 | 14% | 4% |
| Jan 12 | 33°F | 14°F | 53°F 2026 | -33°F 2024 | 14% | 4% |
| Jan 13 | 33°F | 15°F | 57°F 2026 | -41°F 2024 | 13% | 4% |
| Jan 14 | 33°F | 15°F | 53°F 2026 | -27°F 2024 | 13% | 4% |
| Jan 15 | 33°F | 15°F | 55°F 2026 | -28°F 2024 | 13% | 4% |
| Jan 16 | 34°F | 15°F | 52°F 1974 | -24°F 1957 | 13% | 4% |
| Jan 17 | 34°F | 15°F | 53°F 1961 | -27°F 1943 | 13% | 4% |
| Jan 18 | 34°F | 15°F | 52°F 2015 | -29°F 1943 | 13% | 3% |
| Jan 19 | 34°F | 15°F | 53°F 1944 | -26°F 1963 | 13% | 3% |
| Jan 20 | 34°F | 15°F | 54°F 1981 | -21°F 1954 | 13% | 3% |
| Jan 21 | 34°F | 15°F | 52°F 1950 | -30°F 1962 | 13% | 3% |
| Jan 22 | 34°F | 15°F | 58°F 1981 | -27°F 1962 | 13% | 3% |
| Jan 23 | 34°F | 15°F | 54°F 2005 | -28°F 1969 | 13% | 3% |
| Jan 24 | 34°F | 15°F | 53°F 2005 | -33°F 1949 | 13% | 3% |
| Jan 25 | 34°F | 15°F | 57°F 2015 | -31°F 1957 | 13% | 3% |
| Jan 26 | 34°F | 15°F | 55°F 2015 | -33°F 1957 | 14% | 3% |
| Jan 27 | 34°F | 15°F | 55°F 2015 | -27°F 1957 | 14% | 3% |
| Jan 28 | 34°F | 15°F | 50°F 1976 | -30°F 1980 | 14% | 3% |
| Jan 29 | 34°F | 15°F | 52°F 1971 | -32°F 1951 | 14% | 3% |
| Jan 30 | 34°F | 15°F | 55°F 1971 | -26°F 1951 | 14% | 3% |
| Jan 31 | 35°F | 15°F | 57°F 1971 | -27°F 1951 | 14% | 3% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (MST).
- January 1
- sunrise 8:10 AM, sunset 4:59 PM
- January 31
- sunrise 7:52 AM, sunset 5:37 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00242409 (Dillon U Of Montana Western), public domain. Records: NOAA GHCN-Daily, station USW00024138, 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.