Fallon Weather Forecast

    • 44
    • 59

    Dense Fog

    • 40
    • 56

    Areas Fog

    • 39
    • 60

    Mostly Sunny

    • 40
    • 57

    Mostly Cloudy

    • 41
    • 58

    Partly Sunny

    • 46
    • 58

    Mostly Cloudy

Today 22 Jan Coastal North Bay Including Point Reyes National Seashore

Mostly cloudy in the morning then becoming partly cloudy. Areas of fog in the morning. Highs in the upper 50s. West Winds around 5 Mph.

Tonight 22 Jan Coastal North Bay Including Point Reyes National Seashore

Partly cloudy in the evening then becoming mostly cloudy. Patchy fog in the Evening, then widespread dense fog after midnight. Lows in the mid 40s. Northwest Winds around 5 Mph. Becoming north after midnight.

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  • Temperature Forecast NOAA

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Fallon Temperature Statistics

January Temperature

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

  • Lowest 13 January, 2026

    30.9 °F

  • Average January

    48.3 °F

  • Highest 16 January, 2026

    68 °F

Climate (2021–Present)

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

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  • Average Low 2021–2026

    45.6 °F

  • Average 2021–2026

    58 °F

  • Average High 2021–2026

    72.5 °F
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