Jacksonville is waking up muggy and mild at about 79°F with clear skies at local stations, but the real story shows up this afternoon when the heat and storms roll in. Highs are set to jump to around 95°F with heat-index values climbing into the low 100s, and showers and thunderstorms are likely after 1 p.m., so stack your outdoor plans early or have a quick indoor backup ready.
Afternoon Storms
Scattered to numerous thunderstorms are expected to fire along the sea breeze after 1 p.m., ramping up from mid-to-late afternoon into the early evening. Any storm that pops could bring brief, slow-moving downpours with new rainfall totals of about 0.25 to 0.5 inch, plenty of lightning, and wind gusts that may reach 40 to 50 mph, which could trigger localized street flooding. All of this is highlighted by the National Weather Service Jacksonville.
Heat And Safety
Afternoon highs will sit in the mid 90s with heat-index readings near or above 100°F each day, while overnight lows barely cool into the upper 70s. If you work or play outside, plan on frequent water breaks, rest in the shade whenever you can, and keep a close watch on children and pets that may overheat quickly. The City of Jacksonville lists cooling-center locations and other heat safety resources for anyone who needs a breather from the swelter.
Beaches And Commute
Onshore flow teaming up with the sea breeze will leave the surf on the choppy side and push a low-end moderate rip-current risk during the afternoons, so stick close to lifeguards and follow the beach flag warnings. Those same brief downpours and gusty winds can slow the afternoon drive and cause ponding on low-lying roads, so commuters should build in some extra time or shift outdoor plans earlier in the day. Boaters should stay alert for increasing afternoon winds offshore and be ready to head in quickly if storms build.
What To Expect This Week
Scattered afternoon and evening storms are likely through midweek as temperatures hold in the low to mid 90s. If you are lining up Juneteenth events later this week on Friday, keep a close eye on updated forecasts and make sure an indoor backup plan is in your back pocket.
