Petty Mountain Weather Forecast
- 21
- 32
Chance Snow
- 26
- 36
Chance Snow
- 30
- 39
Chance Snow Showers
- 31
- 43
Slight Chance Thunderstorms
- 33
- 51
Partly Sunny
- 35
- 51
Partly Sunny
Today 26 Apr Lower Clark Fork Region
Mostly cloudy. Slight chance of rain and snow in the Morning, then chance of rain Showers, Areas of snow and a slight chance of Thunderstorms in the afternoon. Widespread frost in the morning. Chance of precipitation 50 percent. Highs in the mid 40s to lower 50s. Northeast Winds to 15 Mph.
Tonight 26 Apr Lower Clark Fork Region
Mostly cloudy. A 20 percent chance of rain and snow in the evening. Widespread frost after midnight. Lows in the 20s to lower 30s.
Petty Mountain Temperature Statistics
April Temperature
Missoula, Missoula International Airport (14.3 miles)
Lowest 18 April, 2026
25.6 °FAverage April
46.1 °FHighest 6 April, 2026
70.6 °F
Climate (2021–Present)
Missoula, Missoula International Airport (14.3 miles)
Average Low 2021–2026
36.1 °FAverage 2021–2026
47.6 °FAverage High 2021–2026
59.8 °F