Armstrong Redwoods State Natural Reserve Weather Forecast

    • 41
    • 51

    Chance Rain Showers

    • 38
    • 53

    Increasing Clouds

    • 39
    • 53

    Mostly Sunny

    • 39
    • 57

    Sunny

    • 41
    • 58

    Mostly Sunny

    • 44
    • 57

    Mostly Cloudy

    • 45
    • 52

    Rain Showers Likely

Today 26 Dec North Bay Interior Valleys

Showers and a slight chance of Thunderstorms. Some Thunderstorms may produce heavy rainfall. Highs in the 40s to upper 50s. Southwest Winds 10 to 20 Mph.

Tonight 26 Dec North Bay Interior Valleys

Mostly cloudy in the evening then becoming partly cloudy. A chance of rain in the Evening, then a slight chance of rain after midnight. Lows in the 30s to upper 40s. West Winds 5 to 15 Mph.

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Armstrong Redwoods State Natural Reserve Temperature Statistics

December Temperature

Santa Rosa, Santa Rosa Sonoma County Airport (10.6 miles)

  • Lowest 4 December, 2025

    34 °F

  • Average December

    48 °F

  • Highest 3 December, 2025

    68 °F

Climate (2020–Present)

Santa Rosa, Santa Rosa Sonoma County Airport (10.6 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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