Mount Gleason Weather Forecast

    • 51
    • 62

    Sunny

    • 51
    • 64

    Breezy

    • 51
    • 61

    Sunny

    • 50
    • 61

    Sunny

    • 49
    • 60

    Mostly Sunny

    • 47
    • 57

    Sunny

    • 47
    • 58

    Sunny

Today 9 Dec Western San Gabriel Mountains and Highway 14 Corridor

Sunny. Highs from the 70s at low Elevations to the 60s at high Elevations. Northeast Winds 15 to 25 Mph with Gusts to 40 Mph.

Tonight 9 Dec Western San Gabriel Mountains and Highway 14 Corridor

Clear. Lows in the upper 40s to mid 50s. Northeast Winds 15 to 25 Mph.

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Mount Gleason Temperature Statistics

December Temperature

Los Angeles, Whiteman Airport (14.9 miles)

  • Lowest 1 December, 2025

    51.8 °F

  • Average December

    65 °F

  • Highest 7 December, 2025

    77 °F

Climate (2020–Present)

Los Angeles, Whiteman Airport (14.9 miles)

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  • Average Low 2020–2025

    60 °F

  • Average 2020–2025

    69.8 °F

  • Average High 2020–2025

    76 °F
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