Mount Williamson Weather Forecast

    • 46
    • 58

    Decreasing Clouds

    • 40
    • 50

    Chance Rain

    • 40
    • 45

    Rain Likely

    • 34
    • 42

    Chance Snow

    • 36
    • 44

    Mostly Sunny

    • 41
    • 53

    Mostly Sunny

Today 9 Apr Eastern San Gabriel Mountains

Mostly cloudy. Highs from the mid 60s to mid 70s at low Elevations to the mid 50s to around 60 at high Elevations. Northwest Winds around 15 Mph shifting to the southwest in the afternoon.

Tonight 9 Apr Eastern San Gabriel Mountains

Mostly cloudy in the evening then mostly clear. Lows in the upper 40s to mid 50s except around 40 Colder Valleys and Slopes. Southwest Winds 15 to 25 Mph.

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Mount Williamson Temperature Statistics

April Temperature

Gray Butte Field Airport (16.8 miles)

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Climate (2021–Present)

Gray Butte Field Airport (16.8 miles)

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  • Average Low 2021–2025

    50.9 °F

  • Average 2021–2025

    64.9 °F

  • Average High 2021–2025

    78.5 °F
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