Tongue River Reservoir Weather Forecast

    • 63
    • 93

    Chance Thunderstorms

    • 65
    • 97

    Chance Thunderstorms

    • 65
    • 99

    Chance Thunderstorms

    • 63
    • 97

    Chance Rain Showers

    • 61
    • 92

    Chance Thunderstorms

    • 60
    • 86

    Chance Thunderstorms

Today 16 Jul Southern Big Horn

Sunny. A 20 percent chance of Showers and Thunderstorms late in the afternoon. Highs in the lower 90s. Light and variable Winds in the morning becoming east 5 to 10 Mph in the afternoon.

Tonight 16 Jul Southern Big Horn

Mostly cloudy. Chance of Showers and Thunderstorms in the evening. Slight chance of Showers and Thunderstorms overnight. Lows in the lower 60s. Southeast Winds 5 to 10 Mph. Chance of precipitation 50 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Tongue River Reservoir Temperature Statistics

July Temperature

Sheridan County Airport (24.9 miles)

  • Lowest 1 July, 2026

    46.7 °F

  • Average July

    74.3 °F

  • Highest 12 July, 2026

    109.7 °F

Climate (2021–2026)

Sheridan County Airport (24.9 miles)

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  • Average Low 2021–2026

    33.4 °F

  • Average 2021–2026

    47.6 °F

  • Average High 2021–2026

    62.1 °F
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