...Temperatures will be 10 to 15 degrees below average for parts of the Great Lakes/Ohio Valley...
...Temperatures will be 10 to 15 degrees above average for parts of the Northern High Plains and Northern Rockies...
A front moving off the Northeast/Mid-Atlantic Coast will be come
quasi-stationary over the Gulf Coast States. Showers and thunderstorms will likewise move off the Northeast/Mid-Atlantic Coast during Friday morning. Rain will develop over parts of the Lower Great Lakes into the Northeast ending over the Northeast by Saturday afternoon. Scattered showers and thunderstorms will develop along the boundary over the Southeast/Gulf Coast States through Friday.
On Saturday, showers and thunderstorms will be limited to parts of the Southeast Coast.
A second front over South-Central Canada will move southeastward to Northern Tier States on Saturday. Rain will develop over parts of the Northern High Plains into parts of the Northern Plains expanding into parts of the Upper Great Lakes/Upper Mississippi Valley by Saturday evening.
Meanwhile, monsoonal moisture and a weakening upper-level low over the Great Basin will produce showers and thunderstorms over parts of the Central/Southern Rockies, Central High Plains, Great Basin, and Southwest with precipitation expanding into parts of the the Northern Rockies at time through Saturday. In addition, easterly flow off the Western Gulf of Mexico will produce showers and thunderstorms over parts of Southern Texas also through Saturday.