Simi Weather Forecast

    • 49
    • 64

    Rain

    • 46
    • 59

    Rain

    • 38
    • 60

    Rain Likely

    • 42
    • 63

    Chance Rain

    • 44
    • 57

    Rain Likely

    • 43
    • 61

    Chance Rain

Today 26 Mar North Bay Interior Valleys

Mostly cloudy. Patchy dense fog in the morning. A slight chance of rain in the afternoon. Highs in the 50s to upper 60s. Southwest Winds 10 to 20 Mph.

Tonight 26 Mar North Bay Interior Valleys

Mostly cloudy. A chance of rain. Lows in the upper 40s to mid 50s. South Winds 10 to 20 Mph.

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Simi Temperature Statistics

March Temperature

Santa Rosa, Santa Rosa Sonoma County Airport (9.9 miles)

  • Lowest 9 March, 2025

    33.1 °F

  • Average March

    51.3 °F

  • Highest 23 March, 2025

    73.9 °F

Climate (2020–Present)

Santa Rosa, Santa Rosa Sonoma County Airport (9.9 miles)

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  • Average Low 2020–2025

    45.4 °F

  • Average 2020–2025

    57.7 °F

  • Average High 2020–2025

    72.8 °F
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