Raleigh, NC –Dangerous heat will grip the Carolinas and Mid-Atlantic through next week, with heat index values soaring past 105°F and little overnight relief in cities like Raleigh, Columbia, and Washington, D.C. After scattered thunderstorms midweek, a dome of high pressure will intensify heat and humidity across the region.
According to the National Weather Service and the Weather Prediction Center, a Flood Watch remains in effect for parts of Maryland, including Colmar Manor, until 8 p.m. Wednesday, followed by a rapid transition to extreme heat. From Friday through Tuesday, cities across the region will face daily highs in the upper 90s to near 100°F, with heat index values well into the triple digits, especially during the afternoon hours.
Columbia, SC will see highs of 94–99°F with minimal overnight cooling, creating elevated heat stress for outdoor workers and vulnerable groups. In Valleyview, OH, scattered storms Wednesday will give way to 95°F and “major” heat risk conditions through the weekend. Raleigh’s heat index may peak at 105°F by Juneteenth, with continued 95–99°F highs into midweek.
Residents are urged to limit outdoor activity, stay hydrated, and check on sensitive groups like seniors and children. Cooling centers may open in some counties if prolonged heat worsens.
Extreme heat warnings remain possible into late next week, with minimal relief overnight. Stay alert for updates from local emergency managers and the NWS.
