Rock Spring Reservoir Weather Forecast

    • 62
    • 94

    Slight Chance Thunderstorms

    • 59
    • 90

    Chance Thunderstorms

    • 58
    • 84

    Chance Thunderstorms

    • 59
    • 85

    Chance Thunderstorms

    • 59
    • 89

    Mostly Sunny

    • 60
    • 91

    Mostly Sunny

    • 60
    • 92

    Mostly Sunny

Today 21 Jul Natrona County Lower Elevations

Partly cloudy and breezy. Near steady temperature in the lower 90s. Southwest Winds 15 to 20 Mph with Gusts up to 30 Mph.

Tonight 21 Jul Natrona County Lower Elevations

Partly cloudy. A chance of Showers with a slight chance of Thunderstorms this evening. Breezy with Lows in the lower 60s. Southwest Winds 15 to 20 Mph. Gusts up to 35 Mph this evening. Chance of rain 30 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Rock Spring Reservoir Temperature Statistics

July Temperature

Casper, Natrona County International Airport (34.8 miles)

  • Lowest 12 July, 2025

    41.6 °F

  • Average July

    72.7 °F

  • Highest 9 July, 2025

    100.7 °F

Climate (2020–Present)

Casper, Natrona County International Airport (34.8 miles)

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  • Average Low 2020–2025

    32.6 °F

  • Average 2020–2025

    46.6 °F

  • Average High 2020–2025

    60.2 °F
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