Sparta Weather Forecast
- 27
- 43
Increasing Clouds
- 27
- 49
Mostly Cloudy
- 24
- 53
Breezy
- 14
- 32
Partly Sunny
- 31
- 51
Mostly Cloudy
- 23
- 45
Partly Sunny
Today 15 Dec Knox
Sunny. Not as cool with Highs in the lower 40s. West Winds 5 to 10 Mph.
Tonight 15 Dec Knox
Partly cloudy. Lows in the upper 20s. Southwest Winds 5 to 10 Mph.
Sparta Temperature Statistics
December Temperature
Yankton, Chan Gurney Municipal Airport (34.8 miles)
Lowest 13 December, 2025
-5.1 °FAverage December
21.5 °FHighest 9 December, 2025
46.9 °F
Climate (2020–Present)
Yankton, Chan Gurney Municipal Airport (34.8 miles)
Average Low 2020–2025
39.2 °FAverage 2020–2025
50.2 °FAverage High 2020–2025
61.3 °F