Upper Sioux Agency State Park Weather Forecast

    • 64
    • 82

    Sunny

    • 54
    • 83

    Chance Rain Showers

    • 49
    • 71

    Partly Sunny

    • 53
    • 65

    Rain Showers

    • 49
    • 70

    Chance Rain Showers

    • 49
    • 68

    Mostly Sunny

Today 10 Sep Yellow Medicine

Clear. Patchy fog early in the morning. Highs in the lower 80s. Southwest Winds up to 10 Mph increasing to 10 to 15 Mph in the afternoon.

Tonight 10 Sep Yellow Medicine

Warmer, clear. Lows in the mid 60s. South Winds 10 to 20 Mph. Gusts up to 30 Mph increasing to 40 Mph after midnight.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Upper Sioux Agency State Park Temperature Statistics

September Temperature

Granite Falls, Granite Falls Municipal Airport/Lenzen-Roe Memorial Field (5.6 miles)

  • Lowest 1 September, 2026

    57 °F

  • Average September

    75.1 °F

  • Highest 3 September, 2026

    92.8 °F

Climate (2021–2026)

Granite Falls, Granite Falls Municipal Airport/Lenzen-Roe Memorial Field (5.6 miles)

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

  • Average Low 2021–2026

    37.5 °F

  • Average 2021–2026

    48 °F

  • Average High 2021–2026

    58.5 °F
Get WillyWeather+ to remove ads