Atlanta woke up in a steam bath on Saturday, July 18, with clear but muggy skies, temperatures in the mid 70s and humidity already cranking up the discomfort. Skies are expected to turn mostly sunny by midday and the high should land near 91°F. With a very humid airmass in place, heat index values will climb toward 100°F across many neighborhoods this afternoon.
A Heat Advisory is in effect from noon to 8 p.m. on Saturday, July 18 for much of metro Atlanta and parts of central and eastern Georgia, and some inland spots could see even higher heat index readings. According to the National Weather Service Peachtree City office, residents should limit strenuous outdoor activity during the advisory and plan on little overnight relief. Outdoor workers are urged to schedule the heaviest tasks for early morning or evening and to take frequent water breaks.
Afternoon Storms Possible
By mid to late afternoon, the atmosphere may try to cash in on all that heat. A slight chance of showers and thunderstorms develops after about 3 p.m., with roughly a 20% chance of precipitation. Storm coverage should stay on the spotty side, but any cell that pops up could deliver quick heavy downpours, frequent lightning and strong gusts that might knock down limbs or trigger localized flooding. Have a simple backup plan for evening events or outdoor time, since one neighborhood may get drenched while another a few blocks away stays dry.
Winds And Overnight
Winds will blow from the northwest at 5 to 10 mph this afternoon, offering a modest breeze during peak heating before easing up overnight. The low tonight will hover near 74°F, which means limited cooling for anyone without air conditioning. Looking ahead to Sunday, conditions turn even hotter with highs near 93°F and a higher chance of afternoon storms, so the heat is not going anywhere this weekend.
Where To Cool Off
For anyone needing a break from the heat, the city is offering cooling resources at parks and recreation centers, along with splash pads and designated sites that operate during heat activations. Check the City of Atlanta cooling center information for exact locations and hours before heading out. Public pools and splash pads can help younger kids cool down, but it is a good idea to call ahead about hours and any entry rules.
Quick Tips
Drink plenty of water, avoid heavy exertion between noon and 6 p.m., and check on elderly neighbors or anyone with health issues that heat can worsen. At the first sound of thunder, move indoors to avoid lightning, and build in extra travel time if storms are active on radar. If you come across flooded streets or downed power lines, treat the area as dangerous and report emergencies to 911.
