East Highland Reservoir Weather Forecast

    • 71
    • 100

    Hot

    • 68
    • 95

    Sunny

    • 63
    • 91

    Mostly Sunny

    • 62
    • 87

    Sunny

    • 59
    • 87

    Mostly Sunny

    • 59
    • 85

    Sunny

    • 62
    • 86

    Mostly Sunny

Today 10 Sep San Bernardino and Riverside County Valleys-The Inland Empire

Mostly sunny. Hot. Highs 100 to 108. Areas of Winds south to 10 Mph becoming west with Gusts to 25 Mph this afternoon.

Tonight 10 Sep San Bernardino and Riverside County Valleys-The Inland Empire

Clear. Lows 68 to 73. Areas of Winds west to 10 Mph this evening becoming light.

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  • Temperature Real-Time

East Highland Reservoir Temperature Statistics

September Temperature

San Bernardino Intl. Airport (5 miles)

  • Lowest 2 September, 2026

    59 °F

  • Average September

    73.4 °F

  • Highest 8 September, 2026

    100.4 °F

Climate (2021–2026)

San Bernardino Intl. Airport (5 miles)

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  • Average Low 2021–2026

    54.2 °F

  • Average 2021–2026

    63.2 °F

  • Average High 2021–2026

    80.3 °F
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