Park Reservoir Weather Forecast

    • 51
    • 69

    Chance Rain Showers

    • 52
    • 74

    Partly Sunny

    • 52
    • 73

    Slight Chance Thunderstorms

    • 49
    • 73

    Slight Chance Thunderstorms

    • 48
    • 70

    Slight Chance Thunderstorms

    • 49
    • 68

    Chance Thunderstorms

Today 18 Jul Northeast Bighorn Mountains

Sunny. Slight chance of rain Showers and isolated Thunderstorms late in the afternoon. Highs around 70. Northwest Winds 5 to 15 Mph. Chance of precipitation 20 percent.

Tonight 18 Jul Northeast Bighorn Mountains

Mostly cloudy. Scattered Thunderstorms and chance of rain Showers early in the Evening, then chance of rain Showers and isolated Thunderstorms late in the evening. Lows in the upper 40s. South Winds 5 to 15 Mph. Chance of precipitation 30 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

    72.2 °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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