Strong Thunderstorms, Heat Advisory For North Florida

JACKSONVILLE, Florida – The National Weather Service in Jacksonville has issued a Heat Advisory and Thunderstorm Outlook for Sunday, July 5, 2026.

Heat indices are expected to reach 105-110°F today across the coast and St. Johns River basin, with isolated stronger thunderstorms possible near the I-95 corridor to the coast this afternoon and evening.

A Heat Advisory is in effect through 7 PM today due to dangerous heat and humidity. Thunderstorm activity is expected to develop this afternoon and continue through the evening. The strongest storms are anticipated near the I-95 corridor to the coast.

According to the National Weather Service in Jacksonville, the primary threats include dangerous heat (heat exhaustion and heat stroke) along with storm hazards of wind gusts up to 50 mph, frequent lightning, and heavy downpours that could lead to localized minor flooding.

Moderate rip current risk is also in effect for area beaches.

Storms today may produce:

• Wind gusts up to 50 mph – Primary threat from stronger storms
• Frequent lightning
• Locally heavy downpours (minor flooding possible in spots)

The heat and storms will bring beneficial rainfall in some areas, but outdoor enthusiasts and beachgoers should have a safe shelter plan ready this afternoon and evening. Take frequent breaks, stay hydrated with water, and seek shade or air conditioning during peak heat hours. Never leave children or pets in vehicles.

Areas at highest risk today include:

• Coastal areas and St. Johns River basin (Heat Advisory – including Jacksonville, Jacksonville Beach, and surrounding coastal communities)
• Northeast Florida near the I-95 corridor to the coast (stronger thunderstorms – including Jacksonville, St. Augustine, and nearby areas)

Jacksonville Weather Forecast