Park Reservoir Weather Forecast

    • 46
    • 66

    Rain Showers

    • 51
    • 70

    Chance Thunderstorms

    • 52
    • 72

    Slight Chance Thunderstorms

    • 52
    • 74

    Partly Sunny

    • 53
    • 74

    Mostly Sunny

    • 53
    • 75

    Slight Chance Thunderstorms

Today 23 Jul Northeast Bighorn Mountains

Patchy fog early in the morning. Isolated rain Showers early in the Morning, then scattered rain Showers and isolated Thunderstorms late in the morning. Numerous rain Showers and scattered Thunderstorms in the afternoon. Highs in the mid 60s. West Winds 5 to 15 Mph. Chance of precipitation 70 percent.

Tonight 23 Jul Northeast Bighorn Mountains

Partly cloudy. Chance of Showers and Thunderstorms early in the Evening, then chance of rain Showers and slight chance of Thunderstorms late in the evening. Lows in the mid 40s. Northeast Winds 5 to 10 Mph in the evening shifting to the south overnight. Chance of precipitation 40 percent.

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Park Reservoir Temperature Statistics

July Temperature

Sheridan County Airport (18 miles)

  • Lowest 12 July, 2025

    42.7 °F

  • Average July

    71.6 °F

  • Highest 9 July, 2025

    99.6 °F

Climate (2020–Present)

Sheridan County Airport (18 miles)

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  • Average Low 2020–2025

    33.1 °F

  • Average 2020–2025

    47.1 °F

  • Average High 2020–2025

    61.5 °F
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