Forecasting models are pulling some cooler air into southeast Missouri early next week. A cold front is scheduled to push through on Sunday. Highs are expected to cool from the middle 60's on Sunday to the lower 50's by Monday. The above image is from Unisys Weather. This is the GFS forecasting model. The blue color oozing into our region is the predicted cool air.

On a side note, be sure to check out the Science Insider at the semissourian.com on Monday for a big announcement.