Even though this morning started out lovely and mild, we’re already baking in the heat early this afternoon. Early showers have raced off to the east, already reaching Wisconsin. As a result, almost all of KELOLAND is cloud-free. Despite the light winds and clear skies, the humidity is almost stifling. We’ve had readings of 70° dew points along the Missouri River, something that only happens a few times per summer.
As we continue to heat things up late this afternoon, a few clouds should build along the James River. A few very small thunderstorms could pop out of this by the evening. We think most of this would remain west of Sioux Falls, but it’s something worth noting. Otherwise, clear skies for the rest of tonight will help cool us down marginally. Most will only fall into the upper 60s by morning. Mostly sunny skies stick in place tomorrow for most of the area. The Black Hills could be partly cloudy, though.
After highs approach 100° in central South Dakota, it’s not a big surprise that stray storms could form east of Pierre in the evening. FutureScan is aggressive with these, pushing storms close to Aberdeen and Sioux Falls early Wednesday morning. We keep our outside chance of rain in the forecast for that reason.
We’ll be slightly cooler Thursday and Friday as a system passes through. The weekend will warm slightly with slim chances of rain to match.