Boulder Bay Weather Forecast

    • 56
    • 82

    Slight Chance Thunderstorms

    • 56
    • 82

    Mostly Sunny

    • 54
    • 82

    Mostly Sunny

    • 55
    • 81

    Mostly Sunny

    • 56
    • 83

    Mostly Sunny

    • 56
    • 83

    Mostly Sunny

Today 21 Aug San Bernardino County Mountains

Mostly sunny this Morning, then partly cloudy with a slight chance of Showers and Thunderstorms this afternoon. Highs 77 to 87 above 6000 feet to 86 to 95 below 6000 feet. Areas of Winds south 10 to 15 Mph. Gusts to 30 Mph this afternoon. Chance of measurable precipitation 20 percent.

Tonight 21 Aug San Bernardino County Mountains

Partly cloudy in the evening. Becoming mostly clear. Cooler. Lows 53 to 63 above 6000 feet to 62 to 72 below 6000 feet. Areas of Winds southwest 10 to 15 Mph. Gusts to 30 Mph in the evening.

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Boulder Bay Temperature Statistics

August Temperature

Big Bear City Airport (5.6 miles)

  • Lowest 15 August, 2026

    45.9 °F

  • Average August

    69 °F

  • Highest 1 August, 2026

    88 °F

Climate (2021–2026)

Big Bear City Airport (5.6 miles)

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  • Average Low 2021–2026

    33.7 °F

  • Average 2021–2026

    48.9 °F

  • Average High 2021–2026

    60.4 °F
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