Steamboat Lake Weather Forecast

    • 45
    • 80

    Increasing Clouds

    • 46
    • 78

    Chance Rain Showers

    • 42
    • 71

    Rain Showers Likely

    • 40
    • 68

    Slight Chance Rain Showers

    • 41
    • 73

    Mostly Sunny

    • 40
    • 73

    Mostly Sunny

    • 40
    • 75

    Mostly Sunny

Today 26 Sep Green Mountains and Rattlesnake Range

Sunny, breezy. Near steady temperature in the lower 70s. Southwest Winds 15 to 20 Mph with Gusts up to 35 Mph.

Tonight 26 Sep Green Mountains and Rattlesnake Range

Partly cloudy and breezy. Lows in the upper 40s. Southwest Winds 15 to 20 Mph with Gusts up to 30 Mph, Diminishing to around 10 Mph after midnight.

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  • Temperature Real-Time

Steamboat Lake Temperature Statistics

September Temperature

Casper, Natrona County International Airport (38.5 miles)

  • Lowest 9 September, 2026

    36.6 °F

  • Average September

    64.4 °F

  • Highest 5 September, 2026

    91.7 °F

Climate (2021–2026)

Casper, Natrona County International Airport (38.5 miles)

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  • Average Low 2021–2026

    33.3 °F

  • Average 2021–2026

    47.7 °F

  • Average High 2021–2026

    61.6 °F
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