An upper-level low from Canada is traversing across the northern parts of the United States. This pattern is going to bring down some cooler air from Canada and push into the Plains by the weekend! For some, it could be an early taste of fall!Let's look at two cities for example. Cheyenne's normal high is 83 degrees and Thursday's forecast calls for a high in the upper 50's! In Oklahoma City, the heat wanes for a few more days before highs drop into the 80s on Friday and even 70's on Saturday! This change up of weather will also help create some thunderstorm chances across the Plains too.
A cold front pushing through the Plains is the reason for the cool down, but some could get some stronger storms into early Thursday. Additional storms fire off of the Rockies on Thursday and carry on east-bound through the end of the week.