Hot Weather... And A Fall-Like Weekend?

We're starting to see some pretty significant changes in the long-term forecast. After a nice day on Monday of heat and summer-like humidity - we look for a big cooldown to start Tuesday and then get even bigger on the weekend.

Here's the basic summary of why. If you look at the map below this line, you'll see what looks like blobs that are kind of long and narrow. Those represent the jetstream about 75% of the way up the atmosphere. It separates the warm air from the South from the cool air to the North. We labeled the warm air:

Warm air wedged its way into the area for today - but then things change as the jetstream sags to the South toward the weekend. This next image is the same thing - but for Saturday. Notice how the long & narrow blobs are now farther toward the South, with kind of a u-shape centered on the Minneapolis-area:

That dip in the jetstream could mean we see highs in the lower 70s - or possibly even lower. A big-time cooldown for the weekend. Hopefully we are all ready for that - or hopefully it'll miss us and cool off the eastern portions of the Midwest.

Have a nice evening!

~KDLT Chief Meteorologist Aaron Shaffer