St. Louis is facing an extreme heat event, with temperatures reaching dangerously high levels by Sunday, July 20. The National Weather Service has issued an Extreme Heat Warning, lasting until 7 p.m. on Wednesday, July 24. The heat index could soar as high as 109°F, making conditions feel much hotter. Along with the extreme heat, there is a 30% chance of thunderstorms late Sunday night, which could continue into Monday afternoon. Humidity will stay high, keeping the air muggy even overnight, with winds shifting from the west at a mild 3 to 6 mph.
Stay Safe During Extreme Heat
As temperatures rise, heat-related illnesses are a significant concern, particularly for vulnerable groups such as the elderly, children, and those with existing health issues. The National Weather Service advises residents to stay indoors and limit outdoor activities, especially during the hottest part of the day. Sun-exposed roadways, like I-64 and I-70, should be avoided for travel, as they will be especially dangerous in the afternoon heat. Power grid strain is also expected, so it’s important to charge your devices and use fans wisely to conserve energy. Stay hydrated and be mindful of your health during this intense weather event.
Thunderstorms and Cooling Centers
In addition to the high heat, the chance of thunderstorms increases late Sunday night and into Monday. A few storms may linger into the afternoon on Monday, with a 20% chance of rain. Humidity will remain high, which could make the heat feel even more oppressive. If the power grid faces heavy strain, emergency cooling centers may open, so it’s a good idea to check local resources if needed.
5-Day Weather Forecast for St. Louis (July 20-25)
Sunday (July 20): High 98°F, Heat Index 109°F, Partly Cloudy
Monday (July 21): High 93°F, 20% chance of storms, Partly Sunny
Tuesday (July 22): Mostly Sunny, High 96°F
Wednesday (July 23): Sunny, High 99°F
Thursday (July 24): Mostly Sunny, High 99°F
Friday (July 25): High near 98°F, Sunny
St. Louis is facing an intense period of heat, with temperatures set to reach dangerous levels and a chance of thunderstorms adding to the mix. Residents should take precautions to protect themselves from heat-related health risks, stay hydrated, and limit outdoor activities, especially during peak heat hours. Keep an eye on weather alerts and make use of emergency cooling centers if needed.
