Bloomington Weather Forecast

    • 69
    • 97

    Hot

    • 69
    • 98

    Hot

    • 69
    • 94

    Partly Sunny

    • 67
    • 88

    Chance Rain Showers

    • 67
    • 89

    Slight Chance Thunderstorms

    • 67
    • 91

    Slight Chance Thunderstorms

    • 68
    • 92

    Mostly Sunny

Today 15 Sep San Bernardino and Riverside County Valleys-The Inland Empire

Mostly sunny. Warmer. Highs 92 to 98. Areas of Winds east to 10 Mph becoming southwest with Gusts to 25 Mph this afternoon.

Tonight 15 Sep San Bernardino and Riverside County Valleys-The Inland Empire

Mostly clear. Lows 64 to 69. Areas of Winds west to 10 Mph this evening becoming light.

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Bloomington Temperature Statistics

September Temperature

Riverside Municipal Airport (8.1 miles)

  • Lowest 12 September, 2025

    60.1 °F

  • Average September

    76.9 °F

  • Highest 2 September, 2025

    100 °F

Climate (2020–Present)

Riverside Municipal Airport (8.1 miles)

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  • Average Low 2020–2025

    54.6 °F

  • Average 2020–2025

    66.7 °F

  • Average High 2020–2025

    80 °F
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