Fallon Weather Forecast

    • 50
    • 75

    Increasing Clouds

    • 51
    • 75

    Partly Sunny

    • 54
    • 75

    Mostly Cloudy

    • 55
    • 77

    Partly Sunny

    • 54
    • 76

    Partly Sunny

    • 55
    • 75

    Partly Sunny

    • 55
    • 76

    Mostly Sunny

Today 30 Sep Coastal North Bay Including Point Reyes National Seashore

Sunny. Highs in the 60s to upper 70s. West Winds 5 to 10 Mph.

Tonight 30 Sep Coastal North Bay Including Point Reyes National Seashore

Mostly clear in the evening then becoming partly cloudy. Lows in the lower 50s. West Winds around 5 Mph in the evening. Becoming light.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Fallon Temperature Statistics

September Temperature

Santa Rosa, Santa Rosa Sonoma County Airport (16.2 miles)

  • Lowest 26 September, 2026

    44.7 °F

  • Average September

    66.7 °F

  • Highest 10 September, 2026

    101.6 °F

Climate (2021–2026)

Santa Rosa, Santa Rosa Sonoma County Airport (16.2 miles)

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  • Average Low 2021–2026

    45.9 °F

  • Average 2021–2026

    58.7 °F

  • Average High 2021–2026

    72.9 °F
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