Climate change in Yankton County, South Dakota
Since 1979, Yankton County, South Dakota has warmed 2.1°F, with 6 fewer days above 90°F, 2 more nights above 70°F and 8% more precipitation a year. Its climate in 1996–2025 is most like Burt County, NE's was in 1951–1980.
- Average temperature: +2.1°F
- Summer highs (Jun–Aug): +0.2°F
- Winter lows (Dec–Feb): +3.4°F
- Precipitation: +8%
- Wettest day of the year: +25%
- Longest dry spell: −1 days
- Days above 90°F: −6 days
- Nights above 70°F: +2 days
- Freezing nights: −11 days
- Frost-free season: +13 days
- Muggy days: +12 days
- Summer heat index (Jun–Aug): +0.4°F
- Extreme fire-weather days: +11 days
- Snowfall: +84%
- Snowy days (1 inch or more): +3 days
Changes follow the trend line through every year from 1979 to 2025. Data: NOAA nClimGrid-Daily; humidity from gridMET, adjusted to airport observations.