Steamboat Lake Weather Forecast

    • 46
    • 69

    Rain Showers Likely

    • 45
    • 77

    Rain Showers Likely

    • 39
    • 71

    Rain Showers Likely

    • 37
    • 65

    Slight Chance Thunderstorms

    • 41
    • 74

    Mostly Sunny

    • 42
    • 76

    Slight Chance Thunderstorms

Today 17 Sep Green Mountains and Rattlesnake Range

Cloudy with Showers likely. A slight chance of Thunderstorms this afternoon. Highs in the upper 60s. South Winds around 10 Mph with Gusts up to 20 Mph. Chance of rain 60 percent.

Tonight 17 Sep Green Mountains and Rattlesnake Range

Partly cloudy. A chance of Showers with a slight chance of Thunderstorms in the evening. Lows in the upper 40s. Southwest Winds around 10 Mph with Gusts up to 20 Mph. Chance of rain 30 percent.

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  • Temperature Forecast NOAA

  • 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

    66.4 °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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