Jackson, Mississippi – Relief from oppressive summer heat will be short-lived across Mississippi, with heat index values expected to surge again by mid to late next week, threatening to top 105° in some areas. According to the National Weather Service in Jackson, after a temporary cooldown this weekend and early next week, temperatures and humidity will rebound sharply by Thursday, creating dangerous conditions for outdoor workers, vulnerable groups, and anyone without reliable cooling.
By Wednesday night into Thursday, cities including Jackson, Vicksburg, and Greenville could see heat index readings climb from the mid-90s back into the triple digits, with Vicksburg likely peaking near 106°. Local emergency management is urging residents to limit strenuous activities during the afternoon and to check on elderly neighbors, as heat illness risk climbs rapidly above 100°. Roads, infrastructure, and power demand will also be stressed, especially as high overnight lows prevent much cooling.
Schools, daycare centers, and employers should prepare for increased heat risks through the end of the week, keeping water available and reviewing safety plans. The hottest stretch is expected to last through at least Saturday, with more advisories possible if conditions worsen.
