Jackson, MS – A migrating heat dome is set to push temperatures into the mid to upper 90s across Mississippi within days, bringing intense early-season heat and daily storm chances that could disrupt travel and strain utilities through early April.
According to the National Weather Service Climate Prediction Center, a 70 to 80 percent probability of above-normal temperatures will dominate Mississippi from April 3 through April 9 as strong high pressure builds across the Deep South. Highs in Jackson, Hattiesburg, and Meridian are expected to run 10 to 20 degrees above seasonal averages, with several locations climbing into the upper 90s. Overnight lows will remain warm and humid, limiting relief.
The heat dome will anchor across the Gulf Coast region, with some areas approaching 100 degrees during peak afternoon hours. This combination of heat and humidity increases the risk of heat-related illness and higher energy demand statewide.
At the same time, moisture circulating along the edge of the heat dome will fuel repeated rounds of showers and thunderstorms. Rain chances increase statewide, especially during afternoon and evening hours, with heavier downpours possible along major corridors including I-55, I-20, and U.S. 49. Drivers may encounter reduced visibility and water-covered roads during peak travel times.
Residents are urged to stay hydrated, limit outdoor activity during peak heat, and avoid driving through flooded roadways.
This pattern is expected to persist through April 3–9, with additional advisories likely as storm timing and rainfall totals become more defined.
