Yankton's outlook: warmest day near 109° (Monday), coldest night about 63° (Wednesday). Roughly 0.34 in of rain falls over the period, with Tuesday the most likely wet day (57%). Wind is the one to watch: gusts to 39 mph around Friday. The NWS alert board for this area is currently clear. Right now Yankton is running about 25° warmer than Sioux City. Longer view: four full seasons with serious winter and real summer heat.
Yankton, SD · Elev 1,207 ft · 42.87°N, 97.40°W · South Dakota · Forecast computed for these exact coordinates