Hirschy Reservoir Weather Forecast
- 24
- 51
Snow Likely
- 20
- 39
Partly Sunny
- 22
- 50
Mostly Sunny
- 25
- 54
Partly Sunny
- 26
- 51
Partly Sunny
- 29
- 53
Rain/Snow Likely
- 22
- 44
Rain/Snow Likely
Today 19 Oct Northwest Beaverhead County
Breezy. Rain and snow late in the Morning, then rain and slight chance of snow in the afternoon. New snow accumulation of 2 to 5 Inches. Snow level 7500 feet. Highs 40 to 50. Southwest Winds 15 to 25 Mph. Chance of precipitation near 100 percent.
Tonight 19 Oct Northwest Beaverhead County
Breezy, Colder. Mostly cloudy with a 50 percent chance of snow. Lows 20 to 25. West Winds 15 to 25 Mph.
Hirschy Reservoir Temperature Statistics
October Temperature
Salmon, Lemhi County Airport (31.7 miles)
Lowest 6 October, 2025
27 °FAverage October
48.6 °FHighest 10 October, 2025
78.1 °F
Climate (2020–Present)
Salmon, Lemhi County Airport (31.7 miles)
Average Low 2020–2025
32.3 °FAverage 2020–2025
45.3 °FAverage High 2020–2025
58.3 °F