The last day of September should be a treat: warm weather and patchy clouds, all before temperatures drop in October.
The National Weather Service predicts highs in the mid to upper 70s along the Wasatch Front Monday. The morning will be mostly cloudy, though some of that cover will burn off in the afternoon.
In southern Utah, highs Monday should peak in the mid 80s and skies will be clear.
But the balmy weather won't last. In northern Utah, temperatures will drop a few degrees every day beginning Tuesday or Wednesday. By Thursday, forecasters expect thunderstorms along with highs in the mid 50s. The cooler temperatures will be the result of a cold, Pacific storm system. By Friday, benches and foothills could be receiving snow.