Mount San Antonio Weather Forecast

    • 41
    • 53

    Sunny

    • 43
    • 57

    Partly Sunny

    • 38
    • 54

    Partly Sunny

    • 39
    • 52

    Mostly Sunny

    • 43
    • 56

    Sunny

    • 43
    • 59

    Mostly Sunny

Today 16 Apr Eastern San Gabriel Mountains

Sunny. Highs from the upper 60s and 70s at low Elevations to the mid 50s to around 60 at high Elevations. West Winds near 15 Mph in the afternoon.

Tonight 16 Apr Eastern San Gabriel Mountains

Clear. Lows in the upper 40s to mid 50s except the mid 30s to around 40 Colder Valleys and Slopes.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Mount San Antonio Temperature Statistics

April Temperature

Brackett Field Airport (14.9 miles)

  • Lowest 6 April, 2024

    41 °F

  • Average April

    59.5 °F

  • Highest 11 April, 2024

    84.2 °F

Climate (2019–Present)

Brackett Field Airport (14.9 miles)

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  • Average Low 2019–2024

    55.5 °F

  • Average 2019–2024

    67.6 °F

  • Average High 2019–2024

    75.5 °F
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