Upper Lake Weather Forecast
- 51
- 91
Sunny
- 52
- 92
Mostly Sunny
- 51
- 90
Partly Sunny
- 45
- 79
Partly Sunny
- 46
- 80
Partly Sunny
- 46
- 79
Mostly Cloudy
- 39
- 77
Partly Sunny
Today 18 Mar Southern Lake County
Sunny. Highs 83 to 93.
Tonight 18 Mar Southern Lake County
Clear. Lows 53 to 63.
Upper Lake Temperature Statistics
March Temperature
Ukiah Municipal Airport (15.5 miles)
Lowest 6 March, 2026
37 °FAverage March
56.8 °FHighest 16 March, 2026
90 °F
Climate (2021–Present)
Ukiah Municipal Airport (15.5 miles)
Average Low 2021–2026
47.1 °FAverage 2021–2026
60.9 °FAverage High 2021–2026
76.2 °F