Quiet Saturday, Storms Move In Saturday Night into Sunday

Much Cooler Weather Expected Monday
Published: Jun. 18, 2021 at 1:37 PM CDT|Updated: Jun. 18, 2021 at 10:41 PM CDT
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SIOUX FALLS, S.D. (Dakota News Now) -- Humidity levels are much lower to begin the weekend after some muggy conditions the past few days. The beginning of the Father’s Day weekend is looking good, but unfortunately the second half might not be as nice as we do have chances of showers and thunderstorms in the forecast.

SATURDAY: Most of the day will be dry with plenty of sunshine, but clouds will increase from west to east throughout the day as the next system approaches. There is a slight chance of showers and thunderstorms in the afternoon hours along and west of the Missouri River. Heading into Saturday Night, the chance for showers and thunderstorms will overspread the entire area. While storms look to remain below severe levels, there is a marginal, level one risk in place along and southwest of a line from Pierre to Yankton. Highs will top out in the mid 80s with lows in the 50s and 60s. Winds will be out of the NE and E, becoming SE Saturday night at about 5-15 mph. Gustier winds are expected across western and northern South Dakota.

SUNDAY: Showers and thunderstorms will continue across the area, but will slowly decrease in coverage from west to east as the system departs. Skies will become partly cloudy Sunday night with some extra clouds expected south of I-90. Winds will shift from the S and SE to the N to NW wind and will become gusty in the afternoon. Most of us will see a 10-20 mph wind but 15-30 mph is expected to the north and west. Highs will top out in the mid 70s to low to mid 80s. Lows will fall off into the 40s and 50s.

MONDAY: This will be the coolest day we’ve seen since Memorial Day Weekend. We’ll see a mostly sunny to partly cloudy sky with a breezy N to NNW wind at 10-20 mph. Highs will only top out in the 60s to low 70s, about 10-15 degrees below average. Lows Monday night will fall down well into the 40s, and I wouldn’t be shocked if some of the colder spots see 30s Tuesday morning.

TUESDAY AND BEYOND: The cool spell will be very brief as winds become more southerly once again. Most of the time looks to be dry but there is a chance of scattered showers and thunderstorms Thursday and Thursday night. Highs will be in the upper 70s to mid 80s Tuesday, with 80s and 90s Wednesday through Friday. Next weekend highs will level off in the 80s.

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