Riverside Municipal Airport Weather Forecast

    • 69
    • 95

    Partly Sunny

    • 65
    • 89

    Partly Sunny

    • 63
    • 82

    Mostly Sunny

    • 65
    • 88

    Mostly Sunny

    • 66
    • 91

    Sunny

    • 66
    • 92

    Mostly Sunny

Today 26 Sep San Bernardino and Riverside County Valleys-The Inland Empire

Partly cloudy in the morning. Becoming mostly sunny. Highs 91 to 96. Light Winds becoming southwest 10 to 15 Mph with Gusts to 25 Mph in the afternoon.

Tonight 26 Sep San Bernardino and Riverside County Valleys-The Inland Empire

Partly cloudy in the evening. Becoming mostly cloudy. Lows 64 to 68. Areas of Winds southwest to 10 Mph becoming east overnight.

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Riverside Municipal Airport Temperature Statistics

September Temperature

Riverside Municipal Airport (0 miles)

  • Lowest 5 September, 2026

    59.6 °F

  • Average September

    78.6 °F

  • Highest 9 September, 2026

    110.6 °F

Climate (2021–2026)

Riverside Municipal Airport (0 miles)

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  • Average Low 2021–2026

    55 °F

  • Average 2021–2026

    67.3 °F

  • Average High 2021–2026

    80.4 °F
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