It is a sunny day across KELOLAND, with only a few cumulus clouds moving from NW to SE across the area. The air is dry, with temperatures in the mid 70s to mid 80s, with NW winds at the surface at 10-20 mph with a few higher gusts.
Late this evening a few showers may come in from the NW and travel along Buffalo Ridge through the NE corner of South Dakota and SW Minnesota. The rest of the area will be clear to partly cloudy overnight, and the dry air will allow overnight lows to fall into the low to mid 50s.
Tomorrow will be another mostly sunny day, with very little humidity in the air. Temperatures will be a little warmer, in the upper 70s to mid 80s. Winds will be very light, under 15 mph.
Wednesday looks to be the warmest day we will see for at least a week. With a light south wind turning to the west, temperatures will rise to the upper 80s to low 90s.
There will be a chance of late day to nighttime thunderstorms, and the Storm Prediction Center has given SE KELOLAND (including Sioux Falls) a slight risk of severe thunderstorms. Due to a lack of moisture, the main threat appears to be gusty winds. But it may be difficult for thunderstorms to form at all, because warm air at cloud level (about 50 degrees at 10,000 feet) may “cap” the atmosphere. An approaching cold front would help to break the cap, but the time the cold front arrives will have an impact on storm production.
Behind the front, we’re in for a cooler day on Thursday, with rain showers also coming in behind the front. Highs will be a couple degrees either side of 80, which is actually near-normal for this part of June.
Unfortunately for boaters and beachgoers, colder than normal air is coming to KELOLAND for the upcoming weekend. On Friday, we’ll have partly cloudy skies and highs only in the mid 70s. We’re carrying a chance of thunderstorms on Saturday into Sunday morning as a reinforcing shot of even cooler air comes in. Saturday and Sunday we’re going with highs only in the upper 60s to low 70s. Most of the upper Midwest is expected to see a cooler than normal weekend.
It won’t be quite as cool for the start of next week, though temperatures will struggle to get back to normal until the middle of next week. It looks like we’ll get back to the low 80s by the following weekend, the first weekend of July.
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