ST. LOUIS — Rain and thunderstorms, with heavy downpours, will move through until mid-morning.
A flash flood warning has been allowed to expire at 10:15 a.m. for northern parts of the viewing area. Heavy rain brought flash flooding to several communities, including Granite City, Illinois, and north St. Louis.
A flash flood watch was in effect until 9 a.m. for other parts of the viewing area.
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Skies will clear this afternoon and temperatures will surge into the middle 90s. With dew point temperatures in the 70s, this will push our heat index to the 105 to 110-degree range.
A heat advisory is in force from 11 a.m. until 9 p.m. Monday.
A cold front will approach late Monday night and may bring another chance for thunderstorms to the area. It’s still humid and warm otherwise for Monday night. Low temperatures will be in the upper 70s.
Humidity will begin to drop off on Tuesday with cooler temperatures in the upper 80s. Aside from early morning rain, Tuesday will be dry.
Expect dry, less humid, and pleasant 80s through Friday. The weather will get hotter again by the weekend.
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