Fallon Weather Forecast

    • 53
    • 74

    Increasing Clouds

    • 56
    • 73

    Partly Sunny

    • 50
    • 71

    Mostly Sunny

    • 50
    • 67

    Partly Sunny

    • 49
    • 66

    Partly Sunny

    • 53
    • 71

    Mostly Sunny

    • 53
    • 74

    Mostly Sunny

Today 23 Sep Coastal North Bay Including Point Reyes National Seashore

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

Tonight 23 Sep Coastal North Bay Including Point Reyes National Seashore

Partly cloudy in the evening then becoming mostly clear. Lows in the mid 50s. Northwest Winds 5 to 10 Mph.

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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 5 September, 2026

    46.7 °F

  • Average September

    67 °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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