Flathead Lake Weather Forecast
- 57
- 78
Mostly Sunny
- 62
- 81
Mostly Sunny
- 58
- 78
Partly Sunny
- 58
- 76
Mostly Cloudy
- 57
- 74
Chance Rain
- 56
- 73
Chance Rain Showers
Today 17 Jul Flathead/Mission Valleys
Mostly sunny. A 20 percent chance of Showers and Thunderstorms in the afternoon. Highs in the 80s. Southwest Winds to 15 Mph in the afternoon.
Tonight 17 Jul Flathead/Mission Valleys
Mostly clear. Lows in the upper 40s to mid 50s. North Winds to 15 Mph.
Flathead Lake Temperature Statistics
July Temperature
Kalispell, Glacier Park International Airport (30.4 miles)
Lowest 4 July, 2025
42.7 °FAverage July
68.4 °FHighest 8 July, 2025
92.6 °F
Climate (2020–Present)
Kalispell, Glacier Park International Airport (30.4 miles)
Average Low 2020–2025
32.9 °FAverage 2020–2025
45.1 °FAverage High 2020–2025
56.8 °F