Climate averages 1991–2020
Missoula weather
in July.
A hot, fairly dry month: the warmest and one of the driest of the year. Meets the pleasant-weather rule
Long-term climate patterns, not a forecast for a particular trip.
July is a hot month in Missoula: daytime highs average 28.8°C and nights cool to about 15.3°C. By daytime temperature it is the warmest month of the year.
Expect about 19 mm of rain on roughly 5 days, which makes July a fairly dry month (one of the driest months of the year). Daylight, from sunrise to sunset, lasts about 15 h 28 min on an average July day.
The nearest other city in this atlas is Spokane Valley (261 km away). In July its highs average 29.0°C, about as warm as Missoula, with 15 mm of rain.
Among the 498 cities listed in the United States, Missoula ranks joint 317th of 498 for the warmest July highs and joint 143rd of 498 for the driest July (rainfall, lowest first). The mean July high of those 498 cities is 30.3°C; Missoula is 1.5°C cooler than that mean.
From July to August, average highs fall by 0.1°C to 28.6°C, and monthly rainfall stays at 19 mm.
The annual picture
July 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 | 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, selected | 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
July in nearby cities
- Spokane Valley in JulyUnited States · 261 kmHigh 29.0°C · Low 15.3°C · 15 mm rain
- Spokane in JulyUnited States · 274 kmHigh 29.7°C · Low 16.0°C · 13 mm rain
- Lethbridge in JulyCanada · 326 kmHigh 25.6°C · Low 13.3°C · 35 mm rain
- Kennewick in JulyUnited States · 400 kmHigh 34.1°C · Low 19.1°C · 3.8 mm rain
- Boise in JulyUnited States · 401 kmHigh 32.7°C · Low 17.9°C · 2.6 mm rain
- Tri-Cities in JulyUnited States · 404 kmHigh 34.2°C · Low 19.2°C · 3.8 mm rain
- Meridian in JulyUnited States · 408 kmHigh 32.7°C · Low 18.1°C · 3.4 mm rain
- Nampa in JulyUnited States · 422 kmHigh 33.3°C · Low 19.2°C · 3.4 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.