Two systems will bring stormy weather to start the week with a large area of the U.S. remaining dry.
 
The first weather system, in the northwestern U.S., will slowly creep into the Northern Plains today. Rain showers will fall in the lower elevations, but several inches of additional snow could accumulate in the highest elevations of the Northern Rockies. Once you hit the afternoon hours, instability will allow scattered thunderstorms to form in the northern Plains. 

The same low pressure system responsible for severe weather in recent days will track over the Upper Great Lakes providing some rain and snow for that area. A couple of inches of wet snow is not out of the question for northern Wisconsin and the Upper Peninsula of Michigan. 

A cold front extending southward to eastern Texas and Louisiana will contain a line of showers and thunderstorms mainly east of the Mississippi to the Appalachian spine. Luckily, severe weather and flooding should not be a major issue.

Dry weather under high pressure will take over much of the West, southeastern coast, southern and central Plains, and Midwest.

Expect 40s and 50s for high temperatures the Upper Great Lakes and Northwest. Cooler 30s will be found in the Rockies. Eighties and 90s will be felt over the Desert Southwest, Southern Plains and the Southeast. Elsewhere you can expect 60s and 70s.