Climate averages 1991–2020
Missoula weather
in January.
A cold month with moderate precipitation: the 11th warmest and the 7th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
January is a cold month in Missoula: daytime highs average 0.6°C and nights cool to about -6.9°C. By daytime temperature it is the 11th warmest of the 12 months.
Expect about 45 mm of precipitation on roughly 11 days, which makes January a month with moderate precipitation (the 7th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 8 h 59 min on an average January day.
The nearest other city in this atlas is Spokane Valley (261 km away). In January its highs average 1.9°C, 1.3°C warmer than Missoula, with 78 mm of precipitation.
Among the 498 cities listed in the United States, Missoula ranks joint 427th of 498 for the warmest January highs and joint 97th of 498 for the driest January (precipitation, lowest first). The mean January high of those 498 cities is 9.5°C; Missoula is 8.8°C cooler than that mean.
From January to February, average highs rise by 2.1°C to 2.7°C, and monthly precipitation falls from 45 mm to 41 mm.
The annual picture
January in context
Monthly precipitation
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Missoula climate table
| Month | Average highHigh / low | Average low | Precipitation mm/month | Wet days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January, selected | 0.6°C-6.9°C | -6.9°C | 45 | 10.8 | 9.09 h |
| February | 2.7°C-5.7°C | -5.7°C | 41 | 9.9 | 10.310 h |
| March | 7.0°C-1.7°C | -1.7°C | 44 | 11.0 | 11.912 h |
| April | 11.4°C1.5°C | 1.5°C | 53 | 11.4 | 13.614 h |
| May | 17.9°C6.3°C | 6.3°C | 56 | 11.0 | 15.015 h |
| June | 22.2°C10.4°C | 10.4°C | 56 | 10.0 | 15.816 h |
| July | 28.8°C15.3°C | 15.3°C | 19 | 4.6 | 15.515 h |
| August | 28.6°C14.9°C | 14.9°C | 19 | 3.8 | 14.214 h |
| September | 22.5°C9.8°C | 9.8°C | 30 | 5.8 | 12.613 h |
| October | 13.6°C3.5°C | 3.5°C | 44 | 8.6 | 10.911 h |
| November | 5.2°C-2.3°C | -2.3°C | 50 | 10.0 | 9.49 h |
| December | -0.1°C-7.4°C | -7.4°C | 51 | 10.4 | 8.69 h |
Precipitation (rain or snow, as water) is the average of the 30 separate monthly totals. A wet day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
January in nearby cities
- Spokane Valley in JanuaryUnited States · 261 kmHigh 1.9°C · Low -4.9°C · 78 mm precipitation
- Spokane in JanuaryUnited States · 274 kmHigh 2.2°C · Low -4.6°C · 69 mm rain
- Lethbridge in JanuaryCanada · 326 kmHigh -0.9°C · Low -9.7°C · 14 mm precipitation
- Kennewick in JanuaryUnited States · 400 kmHigh 5.7°C · Low -1.7°C · 34 mm rain
- Boise in JanuaryUnited States · 401 kmHigh 3.8°C · Low -4.6°C · 45 mm rain
- Tri-Cities in JanuaryUnited States · 404 kmHigh 6.0°C · Low -1.5°C · 34 mm rain
- Meridian in JanuaryUnited States · 408 kmHigh 3.8°C · Low -4.3°C · 40 mm rain
- Nampa in JanuaryUnited States · 422 kmHigh 4.6°C · Low -3.4°C · 40 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Missoula) is explained once on the Missoula year overview and on the Sources, method and limits page.