Mount Williamson Weather Forecast

    • 24
    • 30

    Snow Showers

    • 31
    • 40

    Partly Sunny

    • 32
    • 42

    Mostly Sunny

    • 33
    • 43

    Mostly Sunny

    • 41
    • 48

    Partly Sunny

    • 45
    • 54

    Partly Sunny

    • 46
    • 57

    Partly Sunny

Today 27 Jan Eastern San Gabriel Mountains

Snow Showers likely in the Morning, then rain and snow Showers in the afternoon. Additional snow accumulation up to 6 Inches. Snow level 2500 to 3500 feet increasing to 3500 to 4000 feet. Highs from the 40s to around 50 at low Elevations to the mid 20s to lower 30s at high Elevations. Northeast Winds around 15 Mph.

Tonight 27 Jan Eastern San Gabriel Mountains

Mostly cloudy with a slight chance of rain and snow Showers in the Evening, becoming partly cloudy after midnight. Snow level 3500 to 4000 feet. Lows in the 30s to around 40 except 16 to 21 Colder Valleys and Slopes.

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Mount Williamson Temperature Statistics

January Temperature

Gray Butte Field Airport (16.8 miles)

  • Lowest 21 January, 2025

    23.2 °F

  • Average January

    44 °F

  • Highest 19 January, 2025

    64.9 °F

Climate (2020–Present)

Gray Butte Field Airport (16.8 miles)

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  • Average Low 2020–2025

    50.4 °F

  • Average 2020–2025

    64.8 °F

  • Average High 2020–2025

    78.8 °F
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