Sioux Falls, SD Weather

Due to its inland location, Sioux Falls experiences a humid continental climate characterized by hot, humid summers and cold, dry winters. It is in USDA Plant Hardiness Zone 4b. The monthly daily average temperature ranges from 16.6 °F (−8.6 °C) in January to 73.0 °F (22.8 °C) in July; there are 18 days of maxima at or above 90 °F (32 °C) and 26 days with minima at or below 0 °F (−18 °C) annually. Snowfall occurs mostly in light to moderate amounts during the winter, totaling 44.6 inches (113 cm). Precipitation, at 26.33 inches (669 mm) annually, is concentrated in the warmer months. This results in frequent thunderstorms in summer from convection being built up with the unstable weather patterns. Extremes range from −42 °F (−41 °C) on February 9, 1899 to 110 °F (43 °C) as recently as June 21, 1988.