Florida – Darkening clouds could quickly soak Jacksonville after noon today as summer thunderstorms collide with a heat index near 100 degrees. The unsettled pattern does not disappear quickly, with storm opportunities continuing through Wednesday.
According to the National Weather Service in Jacksonville, showers and thunderstorms become likely after noon. The precipitation chance reaches 60%, and some storms could produce heavy rainfall.
Jacksonville Naval Air Station reported 80 degrees shortly before 9 a.m. Humidity stood at 76%, while the heat index had already reached 84.
Temperatures climb toward 89 degrees today. The heat index could reach 100 degrees before storms provide localized relief.
Keep water nearby and move outdoor activities indoors when thunder develops. Drivers on I-95, I-10 and I-295 should prepare for sudden wet pavement and reduced visibility beneath heavier downpours.
Rainfall totals could range from one-tenth to one-quarter inch. Thunderstorms could produce higher amounts.
Storm chances decrease to 30% this evening, mainly before 4 a.m. A slight shower chance continues after 5 a.m.
Sunday stays warm near 88 degrees. A 40% chance of showers and thunderstorms develops mainly after 1 p.m. The heat index could reach 103 degrees.
Monday reaches 89 degrees with a 40% storm chance after 11 a.m. Tuesday climbs near 90, again carrying a 40% chance of showers and thunderstorms.
Wednesday remains near 90 degrees, although the storm chance drops to 20%.
The Weather Prediction Center expects showers and thunderstorms across the Southeast and eastern Gulf Coast through Sunday evening. Jacksonville sits within that broader unsettled southeastern pattern.
No specific tornado threat appears in the supplied Jacksonville data. Still, residents should monitor alerts whenever thunderstorms develop.
More localized warnings could follow if individual storms strengthen. Seeing heavy rain around Jacksonville today? Tell us what conditions look like where you are.
Five-Day Weather Outlook for Jacksonville, Florida
- Today: High 89°F. 60% storm chance after noon, with heavy rainfall possible. Heat index up to 100°F.
- Sunday: High 88°F. 40% storm chance mainly after 1 p.m. Heat index up to 103°F.
- Monday: High 89°F. 40% chance of showers and thunderstorms after 11 a.m.
- Tuesday: High 90°F. 40% chance of showers and thunderstorms.
- Wednesday: High 90°F. 20% chance of showers and thunderstorms.
