Jacksonville, FL – A surge of heat and humidity will fuel strong thunderstorms across the Jacksonville area Monday afternoon, with the heat index climbing near 105°F before storms arrive. The National Weather Service warns of heavy downpours, frequent lightning, and gusty winds between 2 p.m. and 9 p.m., making for a dangerous combination of heat stress and storm hazards.
According to the National Weather Service in Jacksonville, storm coverage is expected to increase quickly Monday, especially along and west of I-95. Rainfall amounts could exceed an inch in some neighborhoods, with isolated higher totals where storms linger. South and west Duval County, as well as nearby Clay and Nassau counties, may see the most intense activity.
Commuters and outdoor workers should prepare for sudden road ponding and reduced visibility. Residents are advised to avoid outdoor activities during peak heat and lightning hours, stay hydrated, and secure loose outdoor items ahead of the storms.
While Tuesday will bring a brief lull in morning activity, storms are likely to redevelop by afternoon. Dangerous heat is expected to persist through midweek, with daily highs in the lower to mid-90s and oppressive humidity.
Five Day Jacksonville, FL Forecast
- Sunday Night: Showers and a few thunderstorms before 9 p.m., low 76°F.
- Monday: Strong thunderstorms after 2 p.m., heat index near 105°F. High 91°F, low 77°F.
- Tuesday: Mostly sunny, storms likely after 11 a.m. High 93°F, low 78°F.
- Wednesday: Isolated morning storms, partly cloudy. High 94°F, low 78°F.
- Thursday: Partly cloudy with a 30% chance of storms. High 95°F, low 77°F.
