Cotati Weather Forecast

    • 48
    • 52

    Rain Showers

    • 46
    • 56

    Mostly Cloudy

    • 40
    • 56

    Partly Sunny

    • 36
    • 53

    Partly Sunny

    • 36
    • 55

    Partly Sunny

    • 37
    • 56

    Partly Sunny

    • 39
    • 57

    Mostly Cloudy

Today 5 Jan North Bay Interior Valleys

Showers. Highs in the upper 40s to mid 50s. Southeast Winds 10 to 20 Mph.

Tonight 5 Jan North Bay Interior Valleys

Showers in the Evening, then a chance of Showers after midnight. Patchy fog after midnight. Lows in the mid 40s to lower 50s. East Winds 5 to 15 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Cotati Temperature Statistics

January Temperature

Petaluma Municipal Airport (7.5 miles)

  • Lowest 1 January, 2026

    48.2 °F

  • Average January

    53.2 °F

  • Highest 3 January, 2026

    60.8 °F

Climate (2021–Present)

Petaluma Municipal Airport (7.5 miles)

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  • Average Low 2021–2026

    44.6 °F

  • Average 2021–2026

    55.1 °F

  • Average High 2021–2026

    68.6 °F
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