St. Louis Braces for Record Heat Ahead of Early Week Temperature Drop
St. Louis is anticipating potential record-breaking heat today, with a high forecast of 98°, and a significant cooldown into the 70s expected early next week.

St. Louis, MO, September 19, 2026 —
St. Louis residents are preparing for a day of potentially record-breaking temperatures as a heatwave grips the region. Forecasters predict a high of 98° Fahrenheit for today, presenting a significant challenge for outdoor activities and potentially straining local power grids. The intense heat is expected to be short-lived, however, as a substantial shift in weather patterns is anticipated early next week.
Meteorologists are forecasting a dramatic cooldown, with temperatures expected to plunge into the 70s by Monday or Tuesday. This significant temperature swing marks a stark contrast to the current extreme heat, offering relief to a city facing oppressive summer conditions. The rapid transition from near-record highs to mild weather is a notable meteorological event for the area.
Specific details regarding the exact timing of the temperature drop and the duration of the cooler spell were not provided. Similarly, information on potential heat advisories, cooling centers, or public health recommendations during the peak heat was not detailed in the available summary. Residents are advised to stay informed through local weather services for the most up-to-date information and safety guidelines as the weather system evolves.
Story summarized from the original created by Chance Gotsch on www.firstalert4.com, see more information here.
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