Triple-Digit Heat Index Expected This Weekend: Here's What You Need to Know

We experienced a significant heat wave during the spring, but this upcoming stretch of weather has the potential to bring something we haven't seen yet this year—actual air temperatures approaching 100°.

While temperatures this weekend are forecast to reach the lower and middle 90s, some locations across the western Piedmont could flirt with the century mark by the middle of next week if current forecast trends continue. Combined with increasing humidity, it could feel even hotter, with heat index values between 100° and 105°.

Although the exact temperatures will likely change over the next several days, confidence continues to increase that a prolonged period of dangerous heat is developing.

What Is the Heat Index?

The heat index is what the temperature actually feels like when air temperature and humidity are combined.

Your body cools itself by sweating. When humidity is high, sweat evaporates more slowly, making it harder for your body to cool itself. That's why an air temperature of 95° can feel more like 103°.

The higher the humidity, the greater the stress on your body and the greater the risk for heat-related illness.

Why Is It Getting So Hot?

The weather pattern is becoming much more favorable for prolonged heat.

The Bermuda High is strengthening over the Atlantic and pumping increasingly warm, humid air into the Carolinas. At the same time, a strong upper-level ridge is forecast to expand eastward during the next several days, allowing temperatures to climb steadily.

Afternoon highs this weekend should generally remain in the lower to middle 90s, but by the middle of next week, some forecast guidance suggests parts of the western Piedmont could approach 100°. Whether we officially reach that number or not, the combination of heat and humidity will create dangerous conditions for anyone spending extended periods outdoors.

While isolated afternoon and evening thunderstorms are expected each day through the weekend, they won't be widespread enough to provide lasting relief from the heat.

Who Is Most at Risk?

Extreme heat affects everyone, but some groups are especially vulnerable:

• Older adults
• Young children
• People with chronic medical conditions
• Outdoor workers
• Athletes participating in summer practices or activities
• Pets

Even healthy adults can experience heat exhaustion or heat stroke after prolonged exposure to hot, humid conditions.

How to Stay Safe

If you'll be spending time outdoors over the next several days, I recommend taking a few extra precautions:

• Drink plenty of water before you become thirsty.
• Wear lightweight, light-colored clothing.
• Take frequent breaks in the shade or air conditioning.
• Schedule strenuous outdoor work during the morning or evening whenever possible.
• Never leave children or pets inside a parked vehicle.
• Check on elderly family members, neighbors, and anyone without reliable air conditioning.

Looking Ahead

I'll be watching next week very closely.

Forecast confidence continues to increase that the hottest weather of 2026 may arrive during the middle of next week. While there is still time for the forecast to change, the potential exists for actual air temperatures to approach 100° across parts of the Piedmont.

When combined with tropical humidity, heat index values could reach 100° to 105°. If those trends continue, Heat Advisories may become necessary across portions of central North Carolina.

I'll continue refining the forecast each day and keep you updated as confidence increases.

My Bottom Line

We already experienced a notable heat wave during the spring, but this upcoming stretch has the potential to bring our hottest air temperatures of the year so far. Not only will humidity push heat index values well into the triple digits, but there's also an increasing chance that some communities across the western Piedmont could see actual air temperatures approach 100° next week.

There's still time for the forecast to evolve, but now is the time to prepare. Stay hydrated, limit strenuous afternoon activities, wear lightweight clothing, and take frequent breaks if you're spending time outdoors.

I'll continue monitoring the forecast closely and keep you updated if confidence grows that the Piedmont could make a run at the century mark.