Big Bear Lake Weather Forecast

    • 38
    • 69

    Sunny

    • 34
    • 64

    Sunny

    • 36
    • 64

    Sunny

    • 39
    • 65

    Sunny

    • 40
    • 68

    Sunny

    • 39
    • 68

    Sunny

    • 40
    • 67

    Sunny

Today 9 Sep San Bernardino County Mountains

Sunny. Highs 66 to 76 above 6000 feet to 71 to 81 below 6000 feet. Areas of Winds south 10 to 20 Mph. Gusts to 30 Mph becoming 35 Mph this afternoon.

Tonight 9 Sep San Bernardino County Mountains

Mostly clear. Colder. Lows 37 to 47 above 6000 feet to 45 to 55 below 6000 feet. Areas of Winds south 10 to 20 Mph. Gusts to 40 Mph. Becoming 35 Mph overnight.

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Big Bear Lake Temperature Statistics

September Temperature

Big Bear City Airport (3.7 miles)

  • Lowest 6 September, 2025

    42.8 °F

  • Average September

    60.7 °F

  • Highest 1 September, 2025

    78.8 °F

Climate (2020–Present)

Big Bear City Airport (3.7 miles)

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  • Average Low 2020–2025

    34.1 °F

  • Average 2020–2025

    49.3 °F

  • Average High 2020–2025

    60.1 °F
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