Cotati Weather Forecast

    • 56
    • 86

    Mostly Sunny

    • 55
    • 86

    Mostly Sunny

    • 54
    • 86

    Mostly Sunny

    • 55
    • 88

    Mostly Sunny

    • 57
    • 91

    Mostly Sunny

    • 56
    • 90

    Mostly Sunny

Today 28 Jul North Bay Interior Valleys

Sunny. Highs in the mid 70s to lower 90s. Southwest Winds 5 to 15 Mph.

Tonight 28 Jul North Bay Interior Valleys

Mostly clear. Lows in the 50s to mid 60s. West Winds 5 to 15 Mph.

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Cotati Temperature Statistics

July Temperature

Petaluma Municipal Airport (7.5 miles)

  • Lowest 17 July, 2026

    44.6 °F

  • Average July

    62.6 °F

  • Highest 21 July, 2026

    96.8 °F

Climate (2021–2026)

Petaluma Municipal Airport (7.5 miles)

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  • Average Low 2021–2026

    44.8 °F

  • Average 2021–2026

    55.2 °F

  • Average High 2021–2026

    68.5 °F
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