Heat Advisories Persist at Walt Disney World This Week: Heat Index Hits 112

A heat advisory remains in effect for the Walt Disney World area today, August 20, from 10am to 7pm. The National Weather Service in Melbourne expects heat index values of 108 to 112 degrees across east central Florida, including Orange, Osceola, Seminole, and Lake counties.

Heat Advisory Issued for Walt Disney World Area - August 20 2026

This is the latest in a run of heat advisories that has covered the area for the past few weeks. Today's high temperatures will reach the mid 90s, and combined with humidity, that pushes the heat index well past advisory criteria during peak afternoon hours.

Heat Advisory Issued for Walt Disney World Area - August 20 2026

Today's Advisory Details

• When: 10am to 7pm, August 20
• Heat index: 108 to 112 degrees
• Areas: Orange, Osceola, Seminole, Lake, and surrounding counties
• Impact: Heat illness risk for anyone spending extended time outdoors without breaks

There's a bit of good news in the forecast, but it is short-lived. The Weather Service expects temperatures to trend closer to normal by Friday, with peak heat index values dropping to the 104 to 108 range in the Walt Disney World area. That's just below advisory threshold, though it's still hot enough to require caution.

Increased cloud cover and afternoon storms should shave a degree or two off high temperatures over the next couple of days. Scattered to numerous showers and storms are possible each afternoon through early next week, with some capable of gusty winds and heavy downpours.

Beyond Friday, forecasters expect the hot and stormy pattern to continue into the weekend, with widespread moderate to major HeatRisk each day. Highs should stay in the low to mid 90s through early next week.

The advisory window today runs 10am to 7pm, which covers most of a typical park day. A few things to keep in mind if you're at Walt Disney World this afternoon:

• Drink water on a regular schedule, not just when you feel thirsty
• Take breaks in air conditioning or shade every couple of hours
• Shift anything strenuous, like long walks between parks, away from 10am to 4pm
• Wear light, loose clothing when possible