Garrison Weather Forecast
- 29
- 52
Chance Rain/Snow
- 32
- 54
Mostly Cloudy
- 24
- 52
Rain Showers
- 18
- 38
Snow Likely
- 19
- 44
Chance Snow
- 27
- 54
Partly Sunny
Today 13 Apr Butte/Blackfoot Region
Chance of rain and snow Showers until late Afternoon, then rain and snow Showers likely late in the afternoon. Chance of precipitation 70 percent. Little or no new snow accumulation. Highs in the mid 40s to lower 50s. Southwest Winds to 15 Mph shifting to the west 15 to 20 Mph with Gusts to around 30 Mph in the afternoon.
Tonight 13 Apr Butte/Blackfoot Region
Mostly cloudy with a 20 percent chance of rain and snow Showers in the Evening, then partly cloudy after midnight. Lows in the upper 20s to mid 30s. West Winds to 15 Mph with Gusts to around 30 Mph.
Garrison Temperature Statistics
April Temperature
Helena Regional Airport (39.8 miles)
Lowest 8 April, 2026
27.6 °FAverage April
46.6 °FHighest 7 April, 2026
69.7 °F
Climate (2021–Present)
Helena Regional Airport (39.8 miles)
Average Low 2021–2026
36.5 °FAverage 2021–2026
48.1 °FAverage High 2021–2026
60 °F