Garrison Weather Forecast
- 32
- 71
Mostly Sunny
- 34
- 73
Mostly Sunny
- 39
- 76
Rain
- 28
- 63
Rain/Snow Likely
- 23
- 48
Rain Likely
- 20
- 45
Chance Rain/Snow
- 25
- 49
Chance Rain
Today 8 Oct Butte/Blackfoot Region
Mostly sunny. Highs in the 60s. South Winds to 15 Mph in the morning.
Tonight 8 Oct Butte/Blackfoot Region
Mostly clear. Lows in the 30s.
Garrison Temperature Statistics
October Temperature
Helena Regional Airport (39.8 miles)
Lowest 6 October, 2025
24.1 °FAverage October
50.4 °FHighest 1 October, 2025
73 °F
Climate (2020–Present)
Helena Regional Airport (39.8 miles)
Average Low 2020–2025
36.1 °FAverage 2020–2025
47.5 °FAverage High 2020–2025
59.4 °F