National Weather Service United States Department of Commerce

Focusing first just on Tuesday, and starting with the most certain thing, it WILL BE some 20-30° cooler than Monday, with most all areas only reaching the 50s for highs. Of less certainty is rainfall, although counties south/west of the Tri Cities stand the BEST chance for scattered and mainly light showers. In contrast, most areas north/east of the Tri Cities could easily stay dry/mostly dry throughout the day and evening. As for cumulative rainfall potential covering the entire Monday evening through Wednesday daytime time frame, by far the highest chances for at least 0.25" of rain will focus across roughly the southwestern 1/3rd of our forecast area, while many counties north/east of the Tri Cities will be lucky to pick up more than 0.05-0.10".