Weeks Lake Weather Forecast

    • 63
    • 95

    Becoming Sunny

    • 57
    • 87

    Sunny

    • 57
    • 89

    Sunny

    • 58
    • 94

    Sunny

    • 58
    • 94

    Sunny

    • 59
    • 95

    Sunny

Today 21 Jul North Bay Interior Mountains

Partly cloudy. A slight chance of Showers. Highs in the upper 70s to lower 90s. West Winds 5 to 10 Mph.

Tonight 21 Jul North Bay Interior Mountains

Partly cloudy. Lows in the 60s. Northwest Winds up to 5 Mph.

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Weeks Lake Temperature Statistics

July Temperature

Santa Rosa, Santa Rosa Sonoma County Airport (24.2 miles)

  • Lowest 1 July, 2026

    46.4 °F

  • Average July

    67.5 °F

  • Highest 14 July, 2026

    97.6 °F

Climate (2021–2026)

Santa Rosa, Santa Rosa Sonoma County Airport (24.2 miles)

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  • Average Low 2021–2026

    45.9 °F

  • Average 2021–2026

    58.5 °F

  • Average High 2021–2026

    72.8 °F
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