Fallon Weather Forecast

    • 47
    • 62

    Fog

    • 47
    • 61

    Areas Fog

    • 47
    • 61

    Partly Sunny

    • 47
    • 66

    Mostly Sunny

    • 49
    • 67

    Mostly Sunny

    • 49
    • 65

    Areas Fog

    • 48
    • 65

    Mostly Sunny

Today 23 May Coastal North Bay Including Point Reyes National Seashore

Mostly cloudy. Highs in the lower 60s. South Winds 5 to 10 Mph.

Tonight 23 May Coastal North Bay Including Point Reyes National Seashore

Mostly cloudy. Areas of fog late in the Evening, then patchy fog after midnight. Lows in the upper 40s. Light Winds.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Fallon Temperature Statistics

May Temperature

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

  • Lowest 13 May, 2026

    44.7 °F

  • Average May

    63.4 °F

  • Highest 19 May, 2026

    89.7 °F

Climate (2021–Present)

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

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  • Average Low 2021–2026

    45.9 °F

  • Average 2021–2026

    58.4 °F

  • Average High 2021–2026

    72.8 °F
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