Other than thicker clouds in NE South Dakota, skies have been mostly sunny, and temperatures have been warm. In SE South Dakota, moist air has accumulated and dew points have reached into the low 70s, which will make for a muggy evening and overnight.
A small impulse in the upper atmosphere may produce isolated thunderstorms tonight in southwest and south central South Dakota. As they move to the east, they will bring scattered thunderstorms to Sioux Falls and SE KELOLAND tomorrow – mainly in the morning and early afternoon. Saturday will be one last day with seasonally-normal high temps in the 80s.
Winds will become stronger out of the northwest on Sunday, and cooler air will come charging into the region. Sunday will not only be a breezy day, but high temperatures will fall back into the 70s in the eastern half of KELOLAND. And the cool air will hang around for at least the first half of next week, with below-normal 70s for highs.
The other issue we have is the lack of rainfall. Unfortunately, our chances for rain will be fairly low for the next week due to incoming dry air. A bit more humidity may arrive with warmer air late next week.