This is looking like a typical May week in KELOLAND with temperatures in the 60s and low 70s, at least for eastern KELOLAND. Central and western South Dakota will have a quick slide in temps around midweek, but it will be short lived.
Here's a look at what a typical May brings to Sioux Falls.
90s are hard to come by with only 14 such days since 1990. On average, just over five and a half days are in the 80s, the 60s and 70s take up two-thirds of the days with around 19. The cool 50s and 40s use up about six days. We've already used up two of those 50s this month.
This is also a month when we can see 100-degree heat. The earliest Sioux Falls has had 100-degree heat was April 25, 1967.