Mount San Antonio Weather Forecast

    • 51
    • 69

    Mostly Sunny

    • 50
    • 64

    Partly Sunny

    • 44
    • 60

    Sunny

    • 46
    • 61

    Mostly Sunny

    • 48
    • 62

    Mostly Sunny

    • 48
    • 64

    Sunny

Today 5 Jun Eastern San Gabriel Mountains

Sunny. Highs from the upper 70s and 80s at low Elevations to the upper 60s to mid 70s at high Elevations. Southwest Winds 15 to 25 Mph in the afternoon.

Tonight 5 Jun Eastern San Gabriel Mountains

Mostly clear in the evening then mostly cloudy. Lows in the 50s to around 60. Southwest Winds 15 to 25 Mph.

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Mount San Antonio Temperature Statistics

June Temperature

Brackett Field Airport (14.9 miles)

  • Lowest 3 June, 2026

    57.2 °F

  • Average June

    71.8 °F

  • Highest 3 June, 2026

    84.2 °F

Climate (2021–Present)

Brackett Field Airport (14.9 miles)

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  • Average Low 2021–2026

    56 °F

  • Average 2021–2026

    68 °F

  • Average High 2021–2026

    76 °F
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