Mount Williamson Weather Forecast

    • 59
    • 79

    Sunny

    • 53
    • 69

    Mostly Sunny

    • 55
    • 72

    Sunny

    • 56
    • 75

    Sunny

    • 56
    • 75

    Sunny

    • 55
    • 74

    Sunny

    • 53
    • 71

    Mostly Sunny

Today 20 Mar Eastern San Gabriel Mountains

Sunny. Highs from the upper 80s and 90s at low Elevations to the mid 70s to lower 80s at high Elevations.

Tonight 20 Mar Eastern San Gabriel Mountains

Clear. Lows in the mid 60s to mid 70s except the lower to mid 50s Colder Valleys and Slopes. Southwest Winds around 15 Mph after midnight.

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Mount Williamson Temperature Statistics

March Temperature

Gray Butte Field Airport (16.8 miles)

  • Lowest

  • Average March

  • Highest

Climate (2021–Present)

Gray Butte Field Airport (16.8 miles)

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  • Average Low 2021–2025

    50.7 °F
  • Average 2021–2025

    64.8 °F
  • Average High 2021–2025

    78.4 °F
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