Upper Sioux Agency State Park Weather Forecast

    • 57
    • 73

    Mostly Cloudy

    • 59
    • 73

    Rain Showers Likely

    • 55
    • 70

    Chance Rain Showers

    • 54
    • 72

    Chance Rain Showers

    • 49
    • 68

    Slight Chance Rain Showers

Today 27 Sep Yellow Medicine

Mostly cloudy. Chance of rain Showers early in the Morning, then slight chance of rain Showers early in the morning. Patchy fog until afternoon. Highs in the lower 70s. Southeast Winds up to 5 Mph shifting to the northeast. Chance of Showers 50 percent.

Tonight 27 Sep Yellow Medicine

Mostly cloudy. Patchy fog after midnight. Lows in the upper 50s. East Winds up to 5 Mph.

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

    66.4 °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