Simi Weather Forecast

    • 50
    • 70

    Mostly Cloudy

    • 54
    • 75

    Increasing Clouds

    • 50
    • 71

    Slight Chance Rain

    • 45
    • 64

    Mostly Cloudy

    • 44
    • 65

    Slight Chance Rain

    • 43
    • 66

    Mostly Cloudy

    • 42
    • 64

    Slight Chance Rain

Today 26 Feb North Bay Interior Valleys

Partly cloudy. Highs in the mid 60s to lower 70s. West Winds around 5 Mph.

Tonight 26 Feb North Bay Interior Valleys

Partly cloudy in the evening then becoming mostly cloudy. Patchy fog after midnight. Lows in the 40s to upper 50s. Northwest Winds up to 5 Mph.

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Simi Temperature Statistics

February Temperature

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

  • Lowest 20 February, 2026

    29.6 °F

  • Average February

    51.5 °F

  • Highest 2 February, 2026

    72.6 °F

Climate (2021–Present)

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

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  • Average Low 2021–2026

    45.6 °F

  • Average 2021–2026

    58 °F

  • Average High 2021–2026

    72.5 °F
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