The Memorial Day holiday weekend gets a pretty nice start with mild temperatures and sunshine. Most of the daytime should remain dry and pretty average. NW Iowa should see some rainfall continuing from an overnight complex of storms from Nebraska. It should actually be a good day for mowing today.
Severe storms could form out in space later this afternoon. We’re expecting them to form north of the Black Hills and north of Spearfish. There isn’t a huge amount of moisture, although heavy rains are possible. The big issue will likely be hail but isolated tornadoes are possible. These should turn into a line along the Missouri River area by the evening and overnight. They’ll catch wind, as they often do, and will push to the east. That’s when we expect higher winds.
These should move into Sioux Falls and Aberdeen late.
Tomorrow there is another round of storms on the way. This time the strongest of them will be farther to the south and east. Some could be severe, again mainly for hail.
Sunrise services in the east could be impacted by rain early Monday morning. We’ve still got rain chances in place each of the next seven days but some sunshine is still possible.