Union Grove Weather Forecast
- 32
- 50
Breezy
- 41
- 59
Sunny
- 43
- 65
Mostly Sunny
- 45
- 65
Mostly Sunny
- 53
- 69
Mostly Sunny
- 55
- 74
Chance Rain Showers
Today 16 Oct Union
Mostly cloudy with a chance of Sprinkles this Morning, then sunny this afternoon. Breezy with Highs in the lower 50s. North Winds around 25 Mph with Gusts up to 40 Mph, Diminishing to 15 to 20 Mph with Gusts up to 30 Mph this afternoon.
Tonight 16 Oct Union
Clear. Areas of frost in the Evening, then widespread frost after midnight. Cooler with Lows in the lower 30s. Northwest Winds 5 to 10 Mph, becoming south after midnight.
Union Grove Temperature Statistics
October Temperature
Yankton, Chan Gurney Municipal Airport (30.4 miles)
Lowest 2 October, 2026
42.1 °FAverage October
62.8 °FHighest 10 October, 2026
91.9 °F
Climate (2021–2026)
Yankton, Chan Gurney Municipal Airport (30.4 miles)
Average Low 2021–2026
39.4 °FAverage 2021–2026
50.5 °FAverage High 2021–2026
61.8 °F