Riverfront Weather Forecast
- 49
- 80
Decreasing Clouds
- 48
- 77
Mostly Sunny
- 52
- 85
Mostly Sunny
- 45
- 80
Chance Rain
- 40
- 63
Partly Sunny
- 42
- 66
Mostly Cloudy
Today 22 Sep Missoula/Bitterroot Valleys
Partly cloudy. Highs in the mid 70s to lower 80s.
Tonight 22 Sep Missoula/Bitterroot Valleys
Mostly cloudy in the evening then clearing. Lows in the mid to upper 40s.
Riverfront Temperature Statistics
September Temperature
Missoula, Missoula International Airport (5 miles)
Lowest 9 September, 2026
38.6 °FAverage September
58.5 °FHighest 1 September, 2026
88.6 °F
Climate (2021–2026)
Missoula, Missoula International Airport (5 miles)
Average Low 2021–2026
36 °FAverage 2021–2026
47.6 °FAverage High 2021–2026
59.7 °F