Riverfront Weather Forecast
- 43
- 69
Rain
- 43
- 73
Rain Likely
- 44
- 75
Rain
- 40
- 66
Rain Showers
- 41
- 71
Slight Chance Rain
- 44
- 76
Partly Sunny
Today 4 Sep Missoula/Bitterroot Valleys
Cloudy early in the morning then becoming partly cloudy. Areas of rain early in the morning. Chance of Showers and Thunderstorms in the afternoon. Areas of fog in the morning. Chance of precipitation 50 percent. Highs in the mid to upper 60s.
Tonight 4 Sep Missoula/Bitterroot Valleys
Chance of rain Showers and a slight chance of Thunderstorms in the Evening, then rain likely after midnight. Patchy fog after midnight. Chance of precipitation 70 percent. Lows near 40.
Riverfront Temperature Statistics
September Temperature
Missoula, Missoula International Airport (5 miles)
Lowest 1 September, 2026
46 °FAverage September
63.1 °FHighest 1 September, 2026
87.1 °F
Climate (2021–2026)
Missoula, Missoula International Airport (5 miles)
Average Low 2021–2026
36 °FAverage 2021–2026
47.6 °FAverage High 2021–2026
59.8 °F