LATEST FORECAST DISCUSSION
Meteorologist: Darren Maier
After another warm & sunny day, temperatures are cooling off tonight. The sky will remain mostly clear and it should stay milder overnight with a light south and southwest wind. Lows will be in the 40's for most places.
The weather pattern continues to be a warm and dry one for not only the Upper Midwest, but for much of the nation. It certainly isn't unusual to get a stretch of sunny and warm weather after those first frosts of the season, and with those coming in the last week for many places, the timing is right on par. Average high temperatures for this time of year are in the 50's now, but we will continue to rise into the 60's and 70's several more days before the pattern breaks down.
A cold front will be sliding into the Upper Midwest on Wednesday, bringing increasing southerly winds and another day with a mostly sunny sky. Those winds may gust 20-25 mph and will help to bring the warm air northward with highs again in the lower 70's expected. Slightly cooler air will follow the cold front but it may not bring that noticeable of a change heading into Thursday as it will be another sunny day with highs in the upper 60's. We should also catch a break from the stronger breezes.
The warmth should peak on Friday as the jet stream rides well to the north and a strong southerly flow again develops. Low pressure and a cold front will be located in the Plains with a large high to our southeast. The difference in pressure between these systems will increase those winds, bringing another surge of warmth northward. Some mid and high clouds are forecast to be increasing through the day, but enough sunshine is still expected to get temperatures into the warm 70's. We won't be breaking any records as they are still in the 80's this time of year, but it will feel much more like spring than fall. The cold front will be sliding east at night and into Saturday, eventually bringing changes our way.
Clouds will be increasing in Saturday as the cold front nears, and we will also see a few scattered showers and storms develop in the area. Current timing is in the afternoon but that may still change over the next day or two. It will remain warm out ahead of the front, but with extra clouds arriving, it will be a touch cooler with highs in the upper 60's expected. Another breezy day is also expected, until the front passes. Rain chances will continue at night but the front is forecast to be on the move, exiting to our east by daybreak Sunday. This should cut off rain chances, leading to a drier Sunday. Cooler air will also follow but it should still be a pretty nice day with a mostly sunny sky and highs in the lower 60's.
The upper level pattern is then forecast to transition to more of a trough in the central and eastern U.S. with a ridge developing out west. This will bring colder air down from Canada, dropping temperatures perhaps below average for a time next week.