Mount Williamson Weather Forecast

    • 63
    • 71

    Partly Sunny

    • 62
    • 75

    Mostly Sunny

    • 68
    • 78

    Mostly Sunny

    • 67
    • 79

    Mostly Sunny

    • 68
    • 80

    Mostly Sunny

    • 68
    • 80

    Mostly Sunny

    • 68
    • 80

    Mostly Sunny

Today 15 Aug Eastern San Gabriel Mountains

Sunny. Highs from the 80s at low Elevations to the 70s at high Elevations.

Tonight 15 Aug Eastern San Gabriel Mountains

Partly cloudy. Lows in the upper 50s to mid 60s. Southwest Winds around 15 Mph in the evening.

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Mount Williamson Temperature Statistics

August Temperature

Gray Butte Field Airport (16.8 miles)

  • Lowest

  • Average August

  • Highest

Climate (2021–2025)

Gray Butte Field Airport (16.8 miles)

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  • Average Low 2021–2025

    48.8 °F
  • Average 2021–2025

    62.6 °F
  • Average High 2021–2025

    76.2 °F
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