Marshall Weather Forecast

    • 54
    • 59

    Decreasing Clouds

    • 54
    • 60

    Partly Sunny

    • 54
    • 59

    Mostly Cloudy

    • 54
    • 59

    Partly Sunny

    • 55
    • 61

    Partly Sunny

    • 55
    • 63

    Partly Sunny

Today 18 Sep Coastal North Bay Including Point Reyes National Seashore

Mostly cloudy in the morning then becoming partly cloudy. Patchy fog in the morning. Highs in the mid 60s to lower 70s. West Winds 5 to 10 Mph.

Tonight 18 Sep Coastal North Bay Including Point Reyes National Seashore

Partly cloudy. Lows in the mid 50s. Northwest Winds 5 to 10 Mph.

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Marshall Temperature Statistics

September Temperature

Petaluma Municipal Airport (16.8 miles)

  • Lowest 7 September, 2026

    44.6 °F

  • Average September

    65.9 °F

  • Highest 9 September, 2026

    96.8 °F

Climate (2021–2026)

Petaluma Municipal Airport (16.8 miles)

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  • Average Low 2021–2026

    44.7 °F

  • Average 2021–2026

    55.2 °F

  • Average High 2021–2026

    68.5 °F
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