National Weather Service United States Department of Commerce

Storm Impacting the Northwest U.S.; Fire Weather Conditions in Southern California; Severe Weather in the South

A Pacific storm is bringing areas of low elevation rain, moderate to heavy mountain snow, and high winds to the Northwest. Strong Santa Ana winds and very dry conditions are producing elevated to critical fire weather conditions in southern California. Isolated strong to severe thunderstorms are possible through early Wednesday morning across parts of northeast Texas into western Tennessee. Read More >

Selected Quick Reference Climatic Information
 for Sioux Falls and South Dakota

Temperature Sioux Falls South Dakota
Record High

110 F Jun 21,1988
         Jul 17, 1936

120 F  17 WSW Ft. Pierre Jul 15, 2006
            4 NW Gann Valley  Jul 5, 1936
Record Low -42 F  Feb 9, 1899 -58 F  McIntosh   Feb 17, 1936
Warmest Year 50.6 in 1931 50.2  1931 State Average
Coldest Year 40.9 in 1917 41.8  1917 State Average

Warmest Month
(Warmest Avg High/Low)

84.5 in Jul 1936
(98.9 / 70.2)

87.7 (Pierre) in Jul 1936
84.3 in Jul 1936 State Average
Coldest Month
(Coldest Avg High/Low)

0.5 in Feb 1936
(10.9 in Jan 1979 and
Dec 1983
     -10.9 in Feb 1936)

-11.0 (Pollock) in Feb. 1936
-3.6 in Feb 1936 State Average
Warmest Summer 77.8 in 1936 77.6 in 1936 (State Average)
Coldest Summer 63.8 in 1915  
Coldest Winter 8.0 in 1978-79 8.6 in 1935-36 (State Average)
Warmest Winter 28.7 in 1930-31  
 
Precipitation Sioux Falls South Dakota
Wettest Year 39.54" in 2019  
Driest Year 10.53" in 1894  
Wettest Month 13.70" in Jun 2014  
Driest Month 0.00" in Nov 2014  
Wettest Day 4.59" on Aug 1, 1975