Guerneville Weather Forecast

    • 56
    • 97

    Hot

    • 52
    • 83

    Mostly Sunny

    • 52
    • 82

    Mostly Sunny

    • 53
    • 79

    Mostly Sunny

    • 53
    • 79

    Mostly Sunny

    • 53
    • 80

    Mostly Sunny

Today 11 Jun North Bay Interior Valleys

Sunny. Highs mid 80s to 101. Northwest Winds 10 to 15 Mph. Becoming southwest in the afternoon.

Tonight 11 Jun North Bay Interior Valleys

Mostly clear. Lows in the lower 50s to mid 60s. Southwest Winds 5 to 15 Mph.

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Guerneville Temperature Statistics

June Temperature

Santa Rosa, Santa Rosa Sonoma County Airport (9.3 miles)

  • Lowest 7 June, 2026

    43.6 °F

  • Average June

    66.7 °F

  • Highest 3 June, 2026

    93.7 °F

Climate (2021–Present)

Santa Rosa, Santa Rosa Sonoma County Airport (9.3 miles)

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  • Average Low 2021–2026

    45.9 °F

  • Average 2021–2026

    58.4 °F

  • Average High 2021–2026

    72.8 °F
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