Detert Reservoir Weather Forecast
- 46
- 59
Rain
- 42
- 57
Rain
- 43
- 56
Rain Showers
- 39
- 52
Rain Showers
- 33
- 52
Rain
- 32
- 55
Mostly Sunny
- 33
- 57
Partly Sunny
Today 22 Dec Southern Lake County
Cloudy. Chance of rain Showers. Highs 50 to 60.
Tonight 22 Dec Southern Lake County
Rain. Lows 42 to 52.
Detert Reservoir Temperature Statistics
December Temperature
Santa Rosa, Santa Rosa Sonoma County Airport (21.7 miles)
Lowest 4 December, 2025
34 °FAverage December
46.2 °FHighest 3 December, 2025
68 °F
Climate (2020–Present)
Santa Rosa, Santa Rosa Sonoma County Airport (21.7 miles)
Average Low 2020–2025
45.5 °FAverage 2020–2025
57.9 °FAverage High 2020–2025
72.5 °F