Tongue River Reservoir Weather Forecast

    • 44
    • 76

    Rain Showers

    • 40
    • 65

    Rain Showers Likely

    • 42
    • 75

    Chance Thunderstorms

    • 42
    • 78

    Partly Sunny

    • 43
    • 78

    Partly Sunny

    • 44
    • 78

    Chance Thunderstorms

    • 45
    • 81

    Mostly Sunny

Today 30 May Southern Big Horn

Scattered Showers and Thunderstorms early in the Afternoon, then Showers and scattered Thunderstorms late in the afternoon. Cooler. Some Thunderstorms may produce heavy rainfall. Highs in the lower 70s. West Winds 5 to 15 Mph. Chance of precipitation 90 percent.

Tonight 30 May Southern Big Horn

Mostly cloudy. Slight chance of rain Showers late in the evening. Slight chance of Thunderstorms in the late evening and overnight. Chance of rain Showers overnight. Lows in the upper 40s. Northwest Winds 5 to 15 Mph. Chance of precipitation 50 percent.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Tongue River Reservoir Temperature Statistics

May Temperature

Sheridan County Airport (24.9 miles)

  • Lowest 6 May, 2026

    16.6 °F

  • Average May

    52.8 °F

  • Highest 13 May, 2026

    95.6 °F

Climate (2021–Present)

Sheridan County Airport (24.9 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    33.5 °F

  • Average 2021–2026

    47.7 °F

  • Average High 2021–2026

    62.3 °F
Get WillyWeather+ to remove ads