Upper Sioux Agency State Park Weather Forecast
- 34
- 53
Chance Rain Showers
- 34
- 52
Partly Sunny
- 36
- 59
Slight Chance Rain Showers
- 34
- 56
Partly Sunny
- 38
- 62
Mostly Sunny
- 44
- 71
Partly Sunny
Today 27 Apr Yellow Medicine
Windy. Rain Showers likely late in the morning. Slight chance of Thunderstorms in the late morning and early afternoon. Chance of rain Showers in the afternoon. Near steady temperature in the mid 40s. Northwest Winds 10 to 15 Mph with Gusts to around 30 Mph increasing to 20 to 30 Mph in the afternoon. Chance of precipitation 70 percent.
Tonight 27 Apr Yellow Medicine
Windy, Colder. Cloudy with a 20 percent chance of rain Showers in the Evening, then mostly clear after midnight. Lows in the lower 30s. Northwest Winds 20 to 30 Mph decreasing to 10 to 20 Mph after midnight.
Upper Sioux Agency State Park Temperature Statistics
April Temperature
Granite Falls, Granite Falls Municipal Airport/Lenzen-Roe Memorial Field (5.6 miles)
Lowest 7 April, 2026
15.8 °FAverage April
43.7 °FHighest 16 April, 2026
88.3 °F
Climate (2021–Present)
Granite Falls, Granite Falls Municipal Airport/Lenzen-Roe Memorial Field (5.6 miles)
Average Low 2021–2026
37.5 °FAverage 2021–2026
48.1 °FAverage High 2021–2026
58.7 °F