National Weather Service United States Department of Commerce

Heat and humidity will build into the region this weekend. A Heat Advisory will be in effect from Noon on Saturday through the evening on Sunday. Afternoon high temperatures will reach the 90s to around 102 degrees, with peak heat index values in the mid 90s to about 105. If you have plans for camping or other outdoor activities, be sure to drink plenty of water, take breaks in the shade or air conditioning, and wear light-colored breathable clothing.
Isolated thunderstorms are on the table for Saturday afternoon and evening. Storms look to initiate west of the Missouri River across south central South Dakota before pushing eastwards down I-90. Isolated strong to severe storms are possible with the main hazards being large hail up to 1 inch in diameter and damaging winds to 65 mph. The storms look to weaken during the late evening to early overnight hours as they progress eastwards.
Scattered strong to severe thunderstorms are possible on Sunday. The evening and overnight hours have the better chances for severe weather. Locations east of I-29 are more likely area to see these storms, as of Friday afternoon. However, there remains some uncertainty regarding specific details. Please continue to monitor the latest forecast for the most up to date information.