Saint John Mountain Weather Forecast

    • 51
    • 69

    Sunny

    • 50
    • 67

    Mostly Sunny

    • 57
    • 69

    Mostly Sunny

    • 62
    • 80

    Sunny

    • 55
    • 81

    Sunny

    • 47
    • 70

    Mostly Sunny

    • 41
    • 61

    Mostly Sunny

Today 27 May Mountains Southwestern Shasta County to Western Colusa County

Sunny, warmer. Highs 71 to 86 higher Elevations. 88 to 95 lower Elevations. Prevailing north Winds up to 10 Mph shifting to the east in the afternoon. Gusts up to 25 Mph.

Tonight 27 May Mountains Southwestern Shasta County to Western Colusa County

Clear. Lows 51 to 65. Prevailing south Winds up to 10 Mph in the evening becoming light.

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Saint John Mountain Temperature Statistics

May Temperature

Ukiah Municipal Airport (34.2 miles)

  • Lowest 5 May, 2025

    42.7 °F

  • Average May

    64.6 °F

  • Highest 9 May, 2025

    94.6 °F

Climate (2020–Present)

Ukiah Municipal Airport (34.2 miles)

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  • Average Low 2020–2025

    46.9 °F

  • Average 2020–2025

    60.7 °F

  • Average High 2020–2025

    76.3 °F
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