Weeks Lake Weather Forecast

    • 35
    • 60

    Sunny

    • 42
    • 58

    Mostly Cloudy

    • 45
    • 54

    Rain

    • 48
    • 53

    Rain

    • 44
    • 55

    Rain Likely

    • 41
    • 54

    Rain Likely

    • 43
    • 53

    Rain Likely

Today 29 Dec North Bay Interior Mountains

Sunny. Highs in the 50s to lower 60s. North Winds 5 to 15 Mph.

Tonight 29 Dec North Bay Interior Mountains

Clear. Lows in the upper 30s to mid 40s. Northeast Winds 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Weeks Lake Temperature Statistics

December Temperature

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

  • Lowest 4 December, 2025

    34 °F

  • Average December

    48.2 °F

  • Highest 3 December, 2025

    68 °F

Climate (2020–Present)

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

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  • Average Low 2020–2025

    45.6 °F

  • Average 2020–2025

    58 °F

  • Average High 2020–2025

    72.5 °F
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