Big Bear Lake Weather Forecast

    • 62
    • 96

    Sunny

    • 59
    • 93

    Sunny

    • 60
    • 92

    Sunny

    • 62
    • 93

    Sunny

    • 61
    • 90

    Mostly Sunny

    • 60
    • 89

    Sunny

Today 12 Aug Northern San Joaquin Valley

Sunny. Highs 92 to 98. Northwest Winds up to 10 Mph with Gusts to around 20 Mph.

Tonight 12 Aug Northern San Joaquin Valley

Clear. Lows 57 to 67. Northwest Winds up to 10 Mph with Gusts to around 20 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Big Bear Lake Temperature Statistics

August Temperature

Modesto City-County Airport - Harry Sham Field (11.2 miles)

  • Lowest 4 August, 2025

    59.6 °F

  • Average August

    80.3 °F

  • Highest 9 August, 2025

    102 °F

Climate (2020–Present)

Modesto City-County Airport - Harry Sham Field (11.2 miles)

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  • Average Low 2020–2025

    51.2 °F

  • Average 2020–2025

    63.3 °F

  • Average High 2020–2025

    76.1 °F
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