Big Sage Reservoir Weather Forecast
- 47
- 80
Sunny
- 47
- 81
Sunny
- 51
- 82
Partly Sunny
- 48
- 73
Mostly Cloudy
- 46
- 72
Partly Sunny
- 46
- 74
Mostly Sunny
Today 16 Sep Modoc County
Sunny. Highs in the lower to mid 80s. East Winds 5 to 10 Mph shifting to the south this afternoon.
Tonight 16 Sep Modoc County
Clear. Lows in the mid 40s to lower 50s. South Winds around 5 Mph shifting to the southeast well after midnight.
Big Sage Reservoir Temperature Statistics
September Temperature
Alturas (9.3 miles)
Lowest 13 September, 2025
41 °FAverage September
66.3 °FHighest 1 September, 2025
91 °F
Climate (2020–Present)
Alturas (9.3 miles)
Average Low 2020–2025
33 °FAverage 2020–2025
49.1 °FAverage High 2020–2025
64.4 °F