High heat and humidity is expected to last until Wednesday night, according to the National Weather Service.
A heat advisory that was issued earlier this week is set to expire at 7 p.m. Wednesday. The advisory covers St. Clair and Madison counties.
Wednesday is expected to have mostly sunny skies with a high of 94. Heat index values may reach as high as 101. There is a 20 percent chance of isolated rain and thunderstorms after 1 p.m. and another 20 percent chance of precipitation after 1 a.m.
Wednesday night may see a low of 76 with partly cloudy skies.
A full forecast is detailed below:
Thursday...Showers and thunderstorms likely. High in the mid 80s. Southwest wind around 10 mph. Chance of rain 70 percent.
Thursday night...Showers and thunderstorms. Locally heavy rainfall possible. Low in the lower 70s. Light wind. Chance of rain 80 percent.
Friday...Showers and thunderstorms likely. Locally heavy rainfall possible. High in the mid 80s. South wind around 10 mph. Chance of rain 70 percent.
Friday night...Showers and thunderstorms likely. Low around 70. Chance of rain 70 percent.
Saturday...Mostly cloudy in the morning then clearing. A 20 percent chance of showers. High in the upper 70s.
Saturday night through Monday...Clear. Low in the upper 50s. High around 80.
Monday night...Mostly clear. Low in the lower 60s.
Tuesday...Partly cloudy with a 20 percent chance of showers and thunderstorms. High in the lower 80s. Temperature steady or slowly falling in the afternoon.