St. Louis Braces for Late-Season Heat Wave With First Alert Weather Days
St. Louis is facing a late-season heat wave, with First Alert Weather Days issued from Monday through Thursday as temperatures are predicted to reach the mid-90s and potentially hit 100°F, with heat index values ranging from 100°F to 107°F.
St. Louis, MO, August 30, 2026 — St. Louis, MO
Residents of St. Louis are preparing for a significant late-season heat wave, prompting the issuance of First Alert Weather Days from Monday through Thursday. The region is expected to experience a substantial rise in temperatures, with forecasts indicating highs reaching the mid-90s Fahrenheit.
Meteorologists also caution that temperatures could potentially climb as high as 100°F during the peak of this event. In addition to the air temperature, the humidity is expected to make conditions feel even more severe. Heat index values, which measure how hot it feels when factoring in humidity, are predicted to range between 100°F and 107°F.
The National Weather Service designation of First Alert Weather Days serves as an alert to the public and local authorities about impending hazardous weather conditions. This period will require vigilance and adherence to safety precautions to mitigate the risks associated with extreme heat.
Further details regarding specific timing, the exact start and end times for each day’s alert, and potential contributing factors to the heat wave were not provided in the summary. Local officials are expected to issue advisories on staying safe and healthy during the high temperatures.
Story summarized from the original created by Leah Hill on www.firstalert4.com, see more information here.
