A heat advisory is expected to go in effect at noon Tuesday due to dangerous levels of heat and humidity, according to the National Weather Service. The advisory is set until 7 p.m. Wednesday, affecting St. Clair and Madison counties.
Heat index values may reach up to 105 due to temperatures in the mid-90s and dewpoints in the low to mid-70s, the National Weather Service reported.
Tuesday is expected to have a high of 93 with sunny skies. A 20 percent chance of isolated rain and thunderstorms is possible after 1 p.m.
Tuesday night will have partly cloudy skies with a low around 74.
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A full forecast is detailed below:
Wednesday...Hot and humid. Partly cloudy. High in the mid 90s. Highest heat index readings of around 106 in the late morning and afternoon. Southwest wind around 10 mph.
Wednesday night...Partly cloudy in the evening...Then mostly cloudy with a 30 percent chance of showers and thunderstorms after midnight. Low in the upper 70s. Southwest wind around 10 mph.
Thursday...Cloudy with showers and thunderstorms likely. High in the mid 80s. Southwest wind around 10 mph. Chance of rain 60 percent.
Thursday night...Showers and thunderstorms likely. Low in the lower 70s. Chance of rain 60 percent.
Friday...Showers and thunderstorms likely. High in the mid 80s. Chance of rain 70 percent.
Friday night...Showers and thunderstorms likely. Low in the upper 60s. Temperature rising through the 60s by midnight...Then near steady overnight. Chance of rain 70 percent.
Saturday...Partly cloudy with a 20 percent chance of showers. High around 80.
Saturday night through Sunday night...Clear. Low in the upper 50s. High in the upper 70s.
Monday...Mostly sunny. High in the lower 80s. Temperature steady or slowly falling in the afternoon.