Temperatures trend warmer through the final days of summer

Published: Sep. 17, 2023 at 4:56 PM CDT|Updated: Sep. 18, 2023 at 11:00 AM CDT
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This afternoon will be very pleasant and very conducive to outdoor plans (though it may not feel conducive to “fall-like” plans) as temperatures will manage to climb to the comfortable mid-70s. Sunshine will be abundant with a light wind out of the southeast through the afternoon. Tonight, a few clouds will start to stream in as a system rolls through well to our south. We’ll be staying dry, but this will help keep temperatures rather mild through the overnight as we dip to the mid 50s by daybreak tomorrow.

High pressure slides east with sunshine and southerly flow returning
High pressure slides east with sunshine and southerly flow returning(WEAU)

Clouds will start to increase Monday night in advance of an approaching warm front from the southwest. Low-level moisture will begin to increase with showers and, perhaps, a rumble of thunder possible for areas along and south of I-90. Some of these may linger through early Tuesday morning, otherwise, expect a dry day with partly sunny skies. Breezy south-southeast winds will help drive afternoon highs above average to the upper 70s. By Wednesday, the warm front will be situated northeast with southerly flow sticking around underneath it. Meanwhile, an upper-level ridge will be building over the state, promoting plenty of sunshine with warmer temperatures in the mid-80s. A few extra clouds will be around Thursday, but quiet conditions look to persist with highs back above normal in the low 80s. Quite a bit of uncertainty then enters the forecast from Friday into the start of fall next weekend as long-range guidance continues to disagree on how things will unfold with an upper trough over the Western United States as it progresses eastward. A few pieces of energy ahead of the trough on Friday could touch off a couple of showers locally, but confidence is low at this time. Over the weekend, however, there are indications of a surface storm system coming together over the Northern Plains as it tracks towards our neck of the woods. Isolated chances for scattered showers and storms are in the forecast both Saturday and Sunday, but we will need to keep an eye on things over the next few days as details become clearer. Temperatures will remain mild and slightly above normal in the 70s.