Upper Sioux Agency State Park Weather Forecast

    • 57
    • 67

    Rain Showers

    • 57
    • 62

    Rain Showers

    • 58
    • 70

    Mostly Cloudy

    • 59
    • 70

    Rain Showers Likely

    • 51
    • 62

    Chance Rain Showers

    • 50
    • 61

    Chance Rain Showers

Today 25 Sep Yellow Medicine

Cloudy. Patchy fog in the morning. Highs in the mid 60s. Southeast Winds 5 to 15 Mph.

Tonight 25 Sep Yellow Medicine

Mostly cloudy. Rain Showers likely after midnight. Lows in the upper 50s. Southeast Winds 10 to 15 Mph. Chance of Showers 70 percent.

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 16 September, 2026

    44.6 °F

  • Average September

    66.9 °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

    58.4 °F
Get WillyWeather+ to remove ads