Jacksonville, Florida – Jacksonville residents should brace for sweltering conditions and strong thunderstorms by Monday afternoon as Florida enters a volatile stretch of summer weather. Heat index values could soar past 106°F by midday, with scattered thunderstorms arriving after 11 a.m., potentially disrupting travel and outdoor plans.
According to the National Weather Service, Monday, July 21, will bring a high near 96°F with southwest winds increasing to 8 mph. Thunderstorms are expected to intensify after 2 p.m., followed by another round Monday night, mainly before 2 a.m. Tuesday. There’s a 60% chance of rain during the day, climbing to 80% overnight. Drivers along I-95 and I-295 should be prepared for sudden downpours and reduced visibility during the evening commute.
Localized flooding, brief power outages, and lightning risks are possible, especially in low-lying urban areas. Residents are urged to stay hydrated, avoid non-essential outdoor activity, and keep devices charged in case of service interruptions.
Tuesday will continue the pattern, with more storms possible from 2 p.m. onward and highs near 93°F. Wednesday may bring the week’s heaviest rainfall, with an 80% chance of showers and storms after 2 p.m. The unsettled weather pattern continues through Saturday, where a slight chance of morning showers may lead to a drier, hotter afternoon.
🌤️ Five-Day Jacksonville Forecast (July 21–26)
- Monday: High 96°F, heat index 106°F. Thunderstorms likely after 11 a.m.
- Tuesday: Storms return by 2 p.m. High 93°F. Evening rain chances rise to 80%.
- Wednesday: Rain and storms likely, especially after 2 p.m. High near 88°F.
- Thursday: Showers and thunderstorms, mainly before 2 p.m. High near 89°F.
- Friday: Hot and humid. High near 92°F. Thunderstorms possible after 2 p.m.
- Saturday: Partly cloudy, high near 94°F. 50% chance of storms later in the day.
