Summit Lake Weather Forecast
- 45
- 72
Mostly Sunny
- 43
- 74
Mostly Sunny
- 42
- 73
Mostly Sunny
- 45
- 73
Mostly Sunny
- 49
- 80
Mostly Sunny
- 50
- 83
Mostly Sunny
Today 6 May Humboldt County
Sunny. Highs 69 to 79. Northwest Winds up to 10 Mph.
Tonight 6 May Humboldt County
Mostly clear. Lows 45 to 51. West Winds 5 to 10 Mph.
Summit Lake Temperature Statistics
May Temperature
Alturas (77.1 miles)
Lowest 1 May, 2026
30.7 °FAverage May
56.7 °FHighest 4 May, 2026
75.9 °F
Climate (2021–Present)
Alturas (77.1 miles)
Average Low 2021–2026
33.5 °FAverage 2021–2026
49.6 °FAverage High 2021–2026
64.9 °F