The unusually cool weather pattern and spotty showers will continue around Chicago for Independence Eve music and fireworks.
While the storm system responsible for showers and thunderstorms, as well as cool air will gradually weaken through the end of the week, it will not diminish fast enough to bring typical early July weather.
There is the risk of a downpour for evening activities around the Lakefront, including music at Grant Park and the fireworks at the Lakefront.
Temperatures will fall into the upper 60s during the evening.
Should a shower wander through just prior to the fireworks, patchy fog could form.
Lake Michigan water temperatures are in the upper 60s. However, with air temperatures reaching the 70s both Wednesday and on Independence Day, the weather will be warm enough to swim.
For activities on the Fourth of July, the coverage of pop up showers and thunderstorms will continue to diminish, but a few communities could have parades, barbeques, ballgames and fireworks dampened.
Temperatures will be within a few degrees of 70 for the evening concerts at Ravinia® Wednesday and Thursday.
Average temperatures for Chicago around the Fourth of July range from a high in the middle 80s to a low in the middle 60s with humid conditions.
The storm system lingering over the middle Mississippi Valley could still be strong enough to produce locally heavy rain over parts of Missouri and southern Illinois into Wednesday.
A fire hose of drenching rain is forecast to extend from the Gulf of Mexico to the eastern part of the Ohio Valley late this week into the weekend but should hold mainly to the east of Chicagoland.