Saint John Mountain Weather Forecast

    • 42
    • 51

    Increasing Clouds

    • 41
    • 50

    Mostly Sunny

    • 40
    • 51

    Partly Sunny

    • 34
    • 47

    Partly Sunny

    • 30
    • 37

    Sunny

    • 29
    • 34

    Mostly Sunny

Today 4 Dec Mountains Southwestern Shasta County to Western Colusa County

Sunny. Highs 50 to 64 higher Elevations. Around 65 lower Elevations. Light Winds.

Tonight 4 Dec Mountains Southwestern Shasta County to Western Colusa County

Mostly clear. Lows 41 to 53. Light Winds.

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Saint John Mountain Temperature Statistics

December Temperature

Ukiah Municipal Airport (34.2 miles)

  • Lowest 1 December, 2024

    37 °F

  • Average December

    47.5 °F

  • Highest 2 December, 2024

    64.9 °F

Climate (2019–Present)

Ukiah Municipal Airport (34.2 miles)

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  • Average Low 2019–2024

    46.8 °F

  • Average 2019–2024

    60.4 °F

  • Average High 2019–2024

    76 °F
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