San Bernardino Weather Forecast

    • 66
    • 97

    Hot

    • 67
    • 96

    Sunny

    • 69
    • 101

    Hot

    • 75
    • 103

    Hot

    • 74
    • 103

    Hot

    • 73
    • 101

    Hot

Today 18 Aug San Bernardino and Riverside County Valleys-The Inland Empire

Sunny. Highs 90 to 97. Light Winds becoming west 10 to 15 Mph with Gusts to 25 Mph this afternoon.

Tonight 18 Aug San Bernardino and Riverside County Valleys-The Inland Empire

Mostly clear. Lows 58 to 64. Areas of Winds west 10 to 15 Mph with Gusts to 25 Mph in the evening becoming light.

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San Bernardino Temperature Statistics

August Temperature

San Bernardino Intl. Airport (2.5 miles)

  • Lowest 16 August, 2025

    61 °F

  • Average August

    75.8 °F

  • Highest 7 August, 2025

    105.8 °F

Climate (2020–Present)

San Bernardino Intl. Airport (2.5 miles)

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  • Average Low 2020–2025

    54.1 °F

  • Average 2020–2025

    63.2 °F

  • Average High 2020–2025

    80.5 °F
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