Jacksonville wakes up to a calm and fairly comfortable start this morning, with temperatures in the upper 60s and a light southwest breeze drifting in off the interior Southeast. As we move through the late morning and into the afternoon, strong May sunshine and a developing inland thermal trough will help temperatures surge into the upper 80s across much of the city, with a few inland neighborhoods briefly touching 90 degrees. Skies should stay partly sunny for most of the day, though you’ll notice patches of fair-weather cumulus clouds bubbling up during peak heating hours as the atmosphere becomes increasingly unstable.
Despite the growing humidity, the overall setup today remains fairly capped aloft, meaning widespread thunderstorm development is unlikely. The Atlantic sea breeze will eventually push inland during the afternoon, but moisture levels remain somewhat limited compared to a typical midsummer pattern, so only a very isolated late-day shower can’t be ruled out west of downtown. Most areas, however, stay dry from sunrise to sunset. UV levels will be very high under the strong subtropical sun, and the combination of heat and dry vegetation continues to support elevated wildfire concerns across Northeast Florida.
By this evening, temperatures gradually fall back through the 70s under partly cloudy skies, with lingering warmth and humidity keeping conditions feeling distinctly early-summer-like overnight. Overall, today has that classic late-spring Jacksonville pattern: hot afternoons, building sea-breeze clouds, muggy evenings, and just enough Atlantic influence to keep conditions from becoming excessively oppressive.