Next Several Days
A low pressure center at 500 mb (that’s at 18,000 feet) will wander south from the Great Lakes, then spin around through the 4th of July. See the below (patriotic) loop from June 29 through July 7. The low pressure is red. This will “unsettle” our weather through the 4th.
Our NWS says:
THIS DOESNT MEAN IT IS GOING TO RAIN EVERY MINUTE OF EVERY HOUR BUT THERE WILL BE AN ON- GOING CHANCE FOR SHOWERS AND A FEW THUNDERSTORMS ON A DAILY BASIS.
They continue:
EVEN AFTER UPPER LOW LIFTS NORTHWARD INTO CANADA AROUND JULY 4TH WE HAVE SUCH A GOOD MOISTURE FEED FROM THE GULF OF MEXICO INTO THE TENNESSEE VALLEY THANKS TO A RATHER STRONG BERMUDA HIGH KEEPING THE CHANCE OF SHOWERS AND THUNDERSTORMS.