Mount Gleason Weather Forecast

    • 58
    • 65

    Sunny

    • 57
    • 63

    Mostly Sunny

    • 50
    • 64

    Sunny

    • 52
    • 61

    Sunny

    • 53
    • 64

    Mostly Sunny

    • 50
    • 61

    Mostly Sunny

    • 51
    • 61

    Sunny

Today 12 Dec Western San Gabriel Mountains and Highway 14 Corridor

Sunny. Highs from the mid to upper 70s at low Elevations to the mid 60s to around 70 at high Elevations. Northeast Winds around 15 Mph.

Tonight 12 Dec Western San Gabriel Mountains and Highway 14 Corridor

Mostly clear. Lows in the 50s to around 60.

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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

    68.1 °F

  • Highest 10 December, 2025

    84.2 °F

Climate (2020–Present)

Los Angeles, Whiteman Airport (14.9 miles)

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  • Average Low 2020–2025

    60 °F

  • Average 2020–2025

    69.9 °F

  • Average High 2020–2025

    76 °F
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