Arrowhead Lake Weather Forecast
- 26
- 32
Increasing Clouds
- 16
- 29
Snow Showers Likely
- 19
- 27
Mostly Sunny
- 24
- 32
Partly Sunny
- 26
- 35
Mostly Sunny
- 28
- 35
Partly Sunny
Today 18 Oct Sun Valley Region
Sunny. Highs 46 to 56.
Tonight 18 Oct Sun Valley Region
Mostly clear. Lows 28 to 36.
Arrowhead Lake Temperature Statistics
October Temperature
Hailey, Friedman Memorial Airport (19.3 miles)
Lowest 12 October, 2025
32 °FAverage October
46 °FHighest 9 October, 2025
71.6 °F
Climate (2020–Present)
Hailey, Friedman Memorial Airport (19.3 miles)
Average Low 2020–2025
34 °FAverage 2020–2025
42.2 °FAverage High 2020–2025
55.8 °F