Iron Mountain Weather Forecast

    • 53
    • 77

    Chance Rain Showers

    • 51
    • 80

    Partly Sunny

    • 50
    • 79

    Slight Chance Thunderstorms

    • 53
    • 80

    Slight Chance Thunderstorms

    • 51
    • 79

    Slight Chance Thunderstorms

    • 47
    • 74

    Chance Thunderstorms

    • 46
    • 71

    Chance Rain Showers

Today 7 Sep Central Laramie County

Partly sunny with a chance of Showers and Thunderstorms. Highs in the upper 70s. Temperature falling into the mid 70s late. West Winds around 10 Mph with Gusts up to 20 Mph. Chance of rain 50 percent.

Tonight 7 Sep Central Laramie County

Mostly cloudy with a chance of Showers with a slight chance of Thunderstorms this Evening, then partly cloudy after midnight. Lows in the mid 50s. South Winds 5 to 10 Mph, becoming west 10 to 15 Mph with Gusts up to 25 Mph after midnight. Chance of rain 30 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Iron Mountain Temperature Statistics

September Temperature

Cheyenne, Cheyenne Airport (14.9 miles)

  • Lowest 5 September, 2025

    46 °F

  • Average September

    62.9 °F

  • Highest 2 September, 2025

    80.1 °F

Climate (2020–Present)

Cheyenne, Cheyenne Airport (14.9 miles)

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  • Average Low 2020–2025

    35.9 °F

  • Average 2020–2025

    48.2 °F

  • Average High 2020–2025

    60.6 °F
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