Green Valley Lake Weather Forecast

    • 51
    • 70

    Sunny

    • 52
    • 72

    Sunny

    • 55
    • 73

    Sunny

    • 56
    • 72

    Mostly Sunny

    • 54
    • 69

    Chance Thunderstorms

    • 53
    • 67

    Chance Thunderstorms

Today 14 Sep San Bernardino County Mountains

Sunny. Highs 66 to 76 above 6000 feet to 77 to 84 below 6000 feet. Areas of Winds southeast to 10 Mph becoming south this afternoon.

Tonight 14 Sep San Bernardino County Mountains

Clear. Lows 41 to 51 above 6000 feet to 52 to 62 below 6000 feet. Areas of Winds south to 10 Mph becoming east overnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Green Valley Lake Temperature Statistics

September Temperature

Big Bear City Airport (12.4 miles)

  • Lowest 11 September, 2025

    35.6 °F

  • Average September

    58.6 °F

  • Highest 1 September, 2025

    78.8 °F

Climate (2020–Present)

Big Bear City Airport (12.4 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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