Extreme Heat Settles Over the Upstate, Raising Risks for Children, Seniors and Pets

June 28, 2026

The Upstate is entering a prolonged stretch of dangerous heat this week, and local officials are urging residents to take precautions to protect those most vulnerable to high temperatures.

Forecasters with the National Weather Service Greenville-Spartanburg office expect highs to climb into the upper 90s by midweek, with humidity driving heat index values toward triple digits. In some areas, the combination of heat and moisture could approach 105 degrees, a level that typically triggers heat advisories. Overnight lows are expected to provide little relief, settling only into the low to mid 70s across much of the Upstate.

The most intense heat is expected during the afternoon hours, roughly between 2 p.m. and 6 p.m. Officials recommend limiting strenuous outdoor activity during that window and making air conditioning a priority rather than an option.

Heat-related illness can develop quickly, and three groups face the greatest risk: young children, older adults and pets.

Protecting Children in the Heat

Children are particularly susceptible because their bodies heat up faster than those of adults and they may not recognize the early warning signs of overheating. Parents and caregivers are encouraged to keep children hydrated, schedule outdoor play for early morning or evening hours, and watch closely for symptoms such as flushed skin, dizziness, nausea or unusual fatigue. Health officials also stress that a child should never be left in a parked vehicle, even for a few minutes. Interior temperatures can rise to deadly levels within a short time, even with windows cracked.

Checking on Older Adults

Older adults are also at elevated risk, in part because the body’s ability to regulate temperature can decline with age and because certain medications and chronic conditions can interfere with the body’s response to heat. Residents are encouraged to check on elderly neighbors, friends and family members regularly during the heat wave, particularly those who live alone or who may not have reliable air conditioning. A brief phone call or visit can make a meaningful difference.

For those without access to cooling at home, libraries, community buildings and other public spaces can offer temporary relief during the hottest parts of the day.

Keeping Pets Safe

Pets require the same attention as people when temperatures soar. Animals can suffer heatstroke quickly, and pavement that feels warm to the touch can burn paw pads. Veterinarians recommend walking dogs during the cooler morning or evening hours, providing constant access to fresh water and shade, and never leaving an animal in a parked car. Signs of distress in pets include heavy panting, drooling, lethargy and difficulty standing. Leaving out fresh water can also help wildlife and outdoor animals during prolonged dry, hot stretches.

A Broader Pattern

The current heat fits into a broader pattern. Meteorologists note that the Upstate has seen an increasing number of above-normal temperature days in recent decades, and stretches of early-season heat like this one are becoming more common.

Scattered afternoon and evening thunderstorms are also in the forecast through the week, some carrying gusty winds and heavy rain. Officials encourage residents to monitor local forecasts and any heat advisories that may be issued in the days ahead.

For now, the guidance is simple. Stay hydrated, stay indoors during peak heat, and look out for the children, seniors, neighbors and animals who depend on others to stay safe.