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St. Louis forecast: Hazy, hot & humid

90s into the weekend, heat indices over 100

ST. LOUIS — A HEAT ADVISORY continues until 8pm. The counties included in the advisory are, St. Louis city and county, St Charles, Lincoln & Jefferson counties in Missouri. In Illinois, Calhoun, Jersey, Madison, St. Clair & Monroe counties. 

Hot temperatures and high humidity may cause heat related illnesses. Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, check up on friends, relatives and neighbors. Make sure your pets have cool water and fresh water to drink. 

The stretch of hot weather will be all about the heat index. Actual temperatures will range mostly in the lower 90s, but feels like temperatures will easily hit 100 degrees and more. 

A few thunderstorms will develop overnight and into Sunday afternoon & evening. Scattered storms linger into Monday.

No break in the heat after the weekend, 90s last through next week and the heat index stays high. Our hottest days still look like Wednesday and Thursday near 100. 

LATEST HIGH-RESOLUTION MODEL FORECAST FOR THE NEXT 12 HOURS

St. Louis Metro Forecast

Saturday night: Partly cloudy with some overnight storms possible... lows in the 70s.

Sunday: An afternoon or evening shower or storm, otherwise partly cloudy. Highs in the low 90s. Heat Index around 100. 

Monday: Scattered showers and storms. Highs in the 90s. Highest heat index around 100-105.

Tuesday: Mostly sunny, mainly dry. Highs in the mid 90s.  Highest heat index around 100-105. 

Wednesday: Sunny...upper 90s.  Highest heat index around 109. 

Thursday: Partly sunny...upper 90s.  Highest heat index around 109. 

 

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