Mount San Antonio Weather Forecast

    • 37
    • 54

    Increasing Clouds

    • 38
    • 48

    Chance Rain

    • 45
    • 54

    Mostly Sunny

    • 43
    • 61

    Mostly Sunny

    • 40
    • 55

    Mostly Sunny

    • 40
    • 54

    Sunny

Today 15 May Los Angeles County Mountains excluding the Santa Monica Range

Areas of low Clouds and fog with drizzle in the morning then sunny. Highs from the mid 60s to mid 70s at low Elevations to the mid 50s to lower 60s at high Elevations. Southwest Winds 15 to 25 Mph.

Tonight 15 May Los Angeles County Mountains excluding the Santa Monica Range

Partly cloudy in the Evening, becoming mostly cloudy with a slight chance of rain and patchy drizzle after midnight. Lows in the 40s to around 50. South Winds 15 to 25 Mph with Gusts to 35 Mph.

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Mount San Antonio Temperature Statistics

May Temperature

Brackett Field Airport (14.9 miles)

  • Lowest 2 May, 2021

    55.4 °F
  • Average May

    67.8 °F
  • Highest 4 May, 2021

    86 °F

Climate (2010–Present)

Brackett Field Airport (14.9 miles)

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  • Average Low 2010–Present

    54.7 °F
  • Average 2010–Present

    67.2 °F
  • Average High 2010–Present

    75.1 °F
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