Mount San Antonio Weather Forecast

    • 36
    • 48

    Mostly Cloudy

    • 35
    • 46

    Mostly Cloudy

    • 33
    • 41

    Mostly Cloudy

    • 35
    • 39

    Rain/Snow Likely

    • 32
    • 39

    Chance Rain/Snow

    • 35
    • 42

    Mostly Sunny

Today 28 Oct Eastern San Gabriel Mountains

Sunny in the morning then partly cloudy. Highs from the mid 60s to lower 70s at low Elevations to the upper 40s to mid 50s at high Elevations.

Tonight 28 Oct Eastern San Gabriel Mountains

Mostly cloudy. Lows in the mid 40s to mid 50s except the lower to mid 30s Colder Valleys and Slopes.

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  • Temperature Real-Time

Mount San Antonio Temperature Statistics

October Temperature

Brackett Field Airport (14.9 miles)

  • Lowest 13 October, 2026

    51.8 °F

  • Average October

    77 °F

  • Highest 2 October, 2026

    102.2 °F

Climate (2021–2026)

Brackett Field Airport (14.9 miles)

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  • Average Low 2021–2026

    56.3 °F

  • Average 2021–2026

    68.2 °F

  • Average High 2021–2026

    76.1 °F
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