Fallon Weather Forecast

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    Rain

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    Rain

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    Rain

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    Rain

Today 20 Dec Coastal North Bay Including Point Reyes National Seashore

Rain. Highs in the upper 50s. Southeast Winds around 5 Mph.

Tonight 20 Dec Coastal North Bay Including Point Reyes National Seashore

Rain. Lows in the lower 50s. South Winds 5 to 10 Mph. Becoming southwest 10 to 20 Mph after midnight.

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Fallon Temperature Statistics

December Temperature

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

  • Lowest 4 December, 2025

    34 °F

  • Average December

    45 °F

  • Highest 3 December, 2025

    68 °F

Climate (2020–Present)

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

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  • Average Low 2020–2025

    45.5 °F

  • Average 2020–2025

    57.9 °F

  • Average High 2020–2025

    72.5 °F
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