Mendocino National Forest Weather Forecast

    • 54
    • 65

    Mostly Sunny

    • 59
    • 71

    Sunny

    • 60
    • 74

    Sunny

    • 61
    • 75

    Mostly Sunny

    • 59
    • 71

    Partly Sunny

    • 56
    • 66

    Slight Chance Rain Showers

    • 55
    • 65

    Slight Chance Rain Showers

Today 14 Sep Mountains Southwestern Shasta County to Western Colusa County

Sunny. Highs 64 to 79 higher Elevations. 80 to 86 lower Elevations. Prevailing northwest Winds up to 10 Mph shifting to the east in the afternoon.

Tonight 14 Sep Mountains Southwestern Shasta County to Western Colusa County

Clear. Lows 50 to 64 higher Elevations. 60 to 68 lower Elevations. Prevailing northwest Winds up to 10 Mph.

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Mendocino National Forest Temperature Statistics

September Temperature

Ukiah Municipal Airport (42.9 miles)

  • Lowest 7 September, 2025

    50 °F

  • Average September

    69.4 °F

  • Highest 2 September, 2025

    102.9 °F

Climate (2020–Present)

Ukiah Municipal Airport (42.9 miles)

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  • Average Low 2020–2025

    46.8 °F

  • Average 2020–2025

    60.7 °F

  • Average High 2020–2025

    76.3 °F
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