Near-Record Heat Grips Jacksonville: Sunshine and Summer-Like Highs for Tuesday

A Sizzling Start to the Week

Jacksonville residents are waking up to a significant warming trend this Tuesday, March 10, 2026, as an early-season heatwave pushes temperatures toward record-breaking territory. While the calendar says it is still early March, the atmosphere over Northeast Florida is behaving more like mid-June. According to current meteorological data, today marks one of the warmest days of the year so far, with clear skies and high pressure dominating the regional weather pattern.

Morning Forecast: A Mild Start with Lingering Fog

The day began with mild conditions, as temperatures hovered in the low to mid-60s during the early commute. Some neighborhoods experienced patchy fog before dawn, a result of the rising humidity and calm winds overnight. However, this fog is expected to burn off quickly by 9:00 AM, giving way to bright, unfiltered sunshine. For those heading out for morning jogs or early errands, the air will remain comfortable until approximately 11:00 AM, after which the mercury is expected to climb rapidly.

Afternoon Outlook: Approaching the 90-Degree Mark

The highlight of today’s forecast is the unseasonable heat expected during the afternoon hours. Jacksonville is predicted to reach a high of 89°F, which is nearly 15 degrees above the historical average for this time of year. Some inland neighborhoods may even flirt with the 90-degree mark. While the record for March 10 stands at 91°F (set back in 1974), today's forecast puts the city within striking distance of that historic peak. With a very high UV index of 8, the National Weather Service advises residents to apply sunscreen and stay hydrated if they plan to spend extended periods outdoors, as the sun's rays are particularly intense under these clear conditions.

Evening and Overnight: Clear Skies and Pleasant Cooling

As the sun sets, the heat will gradually dissipate, though the evening will remain quite warm. Temperatures will settle into the 70s by late evening, providing a pleasant atmosphere for outdoor dining or a stroll along the St. Johns River. Skies will remain mostly clear throughout the night, with the low eventually dropping to a comfortable 63°F. No rain is expected today, providing a dry window before a cold front approaches later in the week.

Tuesday At-A-Glance

• High Temperature: 89°F (Inland areas may vary)
• Low Temperature: 63°F
• Wind: Light and variable, becoming southeasterly at 5-10 mph
• Precipitation: 0% chance of rain
• Alerts: High UV Index warning; no active wind or flood advisories

Looking Ahead

While today is defined by heat and calm, changes are on the horizon. A cold front is forecast to sweep through the area on Thursday, bringing a much-needed cooling trend and the potential for afternoon thunderstorms. For today, however, Jacksonville stays dry and bright. Enjoy the summer-like conditions, but keep those umbrellas ready for the shifts expected by the weekend.