Lake Arrowhead Weather Forecast

    • 48
    • 58

    Sunny

    • 50
    • 63

    Mostly Sunny

    • 48
    • 61

    Mostly Sunny

    • 49
    • 63

    Mostly Sunny

    • 47
    • 63

    Mostly Sunny

    • 45
    • 57

    Partly Sunny

Today 15 Dec San Bernardino County Mountains

Sunny. Highs 55 to 63 above 6000 feet to 61 to 71 below 6000 feet. Areas of Winds north 10 to 15 Mph. Gusts to 25 Mph this afternoon.

Tonight 15 Dec San Bernardino County Mountains

Mostly clear. Lows 32 to 42 above 6000 feet to 44 to 54 below 6000 feet. Areas of Winds northeast 10 to 15 Mph with Gusts to 30 Mph.

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Lake Arrowhead Temperature Statistics

December Temperature

San Bernardino Intl. Airport (11.8 miles)

  • Lowest 4 December, 2025

    40.3 °F

  • Average December

    57.8 °F

  • Highest 10 December, 2025

    87.8 °F

Climate (2020–Present)

San Bernardino Intl. Airport (11.8 miles)

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  • Average Low 2020–2025

    54.1 °F

  • Average 2020–2025

    63 °F

  • Average High 2020–2025

    80.3 °F
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