National Weather Service United States Department of Commerce

Summer heat and humidity are here! Be prepared for heat index readings to peak at 90 to 105 degrees daily this week and little to no relief from the heat at night. Those sensitive to heat or spending time outdoors should be sure to take breaks and stay hydrated.
Scattered strong to severe thunderstorms are possible Monday evening as storms develop near and east of I-29. Golf ball sized hail and 65 mph wind gusts are the main threats with the strongest storms, but a tornado or two cannot be ruled out. Have a plan to shelter indoors if storms threaten you.
Isolated strong to severe storms are possible Tuesday, especially Tuesday evening. However confidence in details is low at this time.
ATTENTION: The Sioux Falls weather radar will be offline for up to 1 week beginning Wednesday, June 24th for replacement of the radar dome panels and repainting of the dome. This outage cannot be postponed for severe weather, and once offline, the radar cannot be returned to service until this work is completed. Radar data can still be accessed by surrounding radars at Aberdeen (KABR), Des Moines (KDMX), Rapid City (KUDX), North Platte (KLNX), Chanhassen (KMPX), and Omaha (KOAX). We apologize for any disruption this may cause.