Big Arm State Park Weather Forecast
- 38
- 48
Rain
- 34
- 48
Rain Likely
- 36
- 52
Partly Sunny
- 39
- 54
Partly Sunny
- 39
- 54
Slight Chance Rain
- 41
- 56
Chance Rain
Today 19 Oct Flathead/Mission Valleys
Rain likely early in the Morning, then Areas of rain late in the morning. Rain likely in the afternoon. Chance of rain near 100 percent. Highs in the mid 40s to lower 50s. Southwest Winds 15 to 20 Mph. Gusts up to 30 Mph in the afternoon.
Tonight 19 Oct Flathead/Mission Valleys
Rain likely. Chance of rain 90 percent. Lows in the upper 20s to mid 30s. South Winds to 15 Mph.
Big Arm State Park Temperature Statistics
October Temperature
Kalispell, Glacier Park International Airport (33.6 miles)
Lowest 6 October, 2025
26.1 °FAverage October
45.4 °FHighest 9 October, 2025
73.9 °F
Climate (2020–Present)
Kalispell, Glacier Park International Airport (33.6 miles)
Average Low 2020–2025
33.1 °FAverage 2020–2025
45.2 °FAverage High 2020–2025
56.8 °F