Grout Bay Weather Forecast

    • 50
    • 70

    Rain Showers Likely

    • 49
    • 63

    Rain Showers Likely

    • 50
    • 70

    Partly Sunny

    • 52
    • 73

    Chance Rain Showers

    • 51
    • 74

    Chance Rain Showers

    • 49
    • 73

    Chance Rain Showers

Today 5 Sep San Bernardino County Mountains

Mostly sunny. Highs 66 to 76 above 6000 feet to 73 to 83 below 6000 feet. Areas of Winds south 15 to 25 Mph. Gusts to 35 Mph. Becoming 40 Mph this afternoon.

Tonight 5 Sep San Bernardino County Mountains

Mostly clear in the Evening, then mostly cloudy with a chance of Showers overnight. Lows 45 to 55 above 6000 feet to 54 to 64 below 6000 feet. Areas of Winds south 10 to 20 Mph. Gusts to 35 Mph. Becoming 25 Mph overnight. Chance of measurable precipitation 30 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Grout Bay Temperature Statistics

September Temperature

Big Bear City Airport (5 miles)

  • Lowest 1 September, 2026

    41.2 °F

  • Average September

    58.9 °F

  • Highest 2 September, 2026

    72 °F

Climate (2021–2026)

Big Bear City Airport (5 miles)

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  • Average Low 2021–2026

    33.8 °F

  • Average 2021–2026

    48.9 °F

  • Average High 2021–2026

    60.4 °F
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