A high-pressure system located over the southeast will keep rain chances mostly at bay throughout much of the weekend. A weak low-pressure system will pass by, accompanied by a trough that is expected to brush the state, potentially bringing a few showers to South Carolina on Sunday. Any showers that form will be mainly focused across the northern Midlands and the Pee Dee—they will be very isolated, though.
With the limited shower and thunderstorm activity, you can expect the temperatures to soar this weekend. Highs on Saturday across the Midlands are expected to exceed 100°F. Greenville and other cities upstate are expected to range between 94 and 97° on Saturday. Even hotter temperatures are in store for the Upstate on Sunday, with some areas expected to reach 100 degrees. On Sunday, Columbia might establish a new record if it hits at least 103°F. Charleston could also establish a new record on Sunday or at least tie the previous record established in 2005 of 100°F
Keep in mind that although the thermometer will already show high temperatures, possibly setting new records, the actual temperature will feel even hotter due to the high humidity expected throughout the weekend. There could be heat advisories or extreme heat warnings put in effect this weekend across many parts of South Carolina, as the heat is expected to be dangerous. Some areas could experience heat indices as high as 113°F.
ALERT: A long &potentially dangerous heat wave will impact much of the Southeast U.S. Saturday and continuing into much of next week. Heat indices of 112-118 degrees are expected each afternoon for much of the SC Lowcountry and Southeast Georgia. #chswx #scwx #gawx #savwx pic.twitter.com/IfdGZ9Qma6
— NWS Charleston, SC (@NWSCharlestonSC) July 24, 2025
Evenings will remain hot, too. On Sunday morning, there could be at least 10 official stations that could either tie or break new warm low records overnight. Temperatures will struggle to drop below 75°F across upstate, while the Midlands, Lowcountry, and Pee Dee are expected to remain closer to 80°F on Sunday morning.
There’s also a chance for a bit of Saharan dust to impact the eastern half of South Carolina, especially on Saturday. Saharan dust will keep the skies with a yellowish tone, providing beautiful sunrises and sunsets. If you suffer from respiratory issues, these microscopic particles suspended in the atmosphere could cause some trouble. Please limit your time outdoors if you suffer from asthma or other respiratory problems.
If you’re heading to the beach, be sure to look out for those flags, as there may be rip current risks affecting local beaches.