Muscupiabe Weather Forecast

    • 69
    • 91

    Rain Showers Likely

    • 66
    • 87

    Rain Showers Likely

    • 65
    • 88

    Chance Thunderstorms

    • 67
    • 91

    Mostly Sunny

    • 69
    • 93

    Mostly Sunny

    • 70
    • 96

    Mostly Sunny

Today 17 Sep San Bernardino and Riverside County Valleys-The Inland Empire

Partly cloudy this Morning, then mostly cloudy with a slight chance of Showers and Thunderstorms this afternoon. Highs 86 to 91. Light Winds becoming west 10 to 15 Mph this afternoon. Chance of measurable precipitation 20 percent.

Tonight 17 Sep San Bernardino and Riverside County Valleys-The Inland Empire

Mostly cloudy with a slight chance of Thunderstorms. A slight chance of Showers in the Evening, then a chance of Showers overnight. Lows 65 to 69. Areas of Winds west 10 Mph in the evening becoming light. Chance of measurable precipitation 40 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Muscupiabe Temperature Statistics

September Temperature

San Bernardino Intl. Airport (4.3 miles)

  • Lowest 9 September, 2025

    60.8 °F

  • Average September

    75.2 °F

  • Highest 1 September, 2025

    100.4 °F

Climate (2020–Present)

San Bernardino Intl. Airport (4.3 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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