Boulder Reservoir Weather Forecast
- 44
- 71
Mostly Sunny
- 50
- 76
Mostly Sunny
- 51
- 81
Mostly Sunny
- 54
- 81
Partly Sunny
- 50
- 76
Mostly Cloudy
- 48
- 73
Partly Sunny
- 48
- 74
Mostly Sunny
Today 15 Sep Northern Washoe County
Sunny. Highs 74 to 84. Northeast Winds 10 to 15 Mph.
Tonight 15 Sep Northern Washoe County
Clear. Lows 42 to 52. Northeast Winds 10 to 15 Mph.
Boulder Reservoir Temperature Statistics
September Temperature
Alturas (42.9 miles)
Lowest 13 September, 2025
41 °FAverage September
66.5 °FHighest 1 September, 2025
91 °F
Climate (2020–Present)
Alturas (42.9 miles)
Average Low 2020–2025
32.9 °FAverage 2020–2025
49.2 °FAverage High 2020–2025
64.4 °F