Fort Irwin Weather Forecast

    • 73
    • 96

    Increasing Clouds

    • 67
    • 84

    Rain Showers Likely

    • 65
    • 87

    Chance Rain Showers

    • 66
    • 87

    Mostly Sunny

    • 67
    • 90

    Mostly Sunny

    • 69
    • 92

    Mostly Sunny

Today 17 Sep Western Mojave Desert

Mostly sunny. Highs 95 to 98. Northwest Winds up to 10 Mph shifting to the east in the afternoon.

Tonight 17 Sep Western Mojave Desert

Mostly cloudy. Lows 72 to 75. Southwest Winds up to 10 Mph.

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Fort Irwin Temperature Statistics

September Temperature

Fort Irwin/Barstow, Bicycle Lake Army Airfield (3.7 miles)

  • Lowest 11 September, 2025

    60.4 °F

  • Average September

    80.8 °F

  • Highest 4 September, 2025

    97.3 °F

Climate (2020–Present)

Fort Irwin/Barstow, Bicycle Lake Army Airfield (3.7 miles)

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  • Average Low 2020–2025

    52.9 °F

  • Average 2020–2025

    66.8 °F

  • Average High 2020–2025

    79.3 °F
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