Guerneville Weather Forecast
- 48
- 78
Areas Fog
- 50
- 71
Partly Sunny
- 50
- 73
Areas Fog
- 56
- 82
Mostly Sunny
- 54
- 87
Sunny
- 53
- 84
Mostly Sunny
- 52
- 79
Mostly Sunny
Today 6 Jul North Bay Interior Valleys
Sunny. Highs in the upper 60s to mid 80s. Southwest Winds 5 to 15 Mph.
Tonight 6 Jul North Bay Interior Valleys
Mostly clear in the evening then becoming mostly cloudy. Areas of fog after midnight. Lows in the 40s to mid 50s. Southwest Winds 5 to 15 Mph.
Guerneville Temperature Statistics
July Temperature
Santa Rosa, Santa Rosa Sonoma County Airport (9.3 miles)
Lowest 4 July, 2025
46.9 °FAverage July
64.1 °FHighest 2 July, 2025
82.9 °F
Climate (2020–Present)
Santa Rosa, Santa Rosa Sonoma County Airport (9.3 miles)
Average Low 2020–2025
45.3 °FAverage 2020–2025
57.8 °FAverage High 2020–2025
72.8 °F