Atlanta is waking up to a clear but swampy Sunday, with early morning temperatures near 74°F and the air already feeling thick. It will not stay mild for long. Highs are headed for the low 90s this afternoon, and the humidity will shove the heat index toward 100°F by midafternoon. Scattered showers and thunderstorms are expected to fire later in the day, so anyone with outdoor plans or a late-day drive should be ready to pivot.
Afternoon Storms Could Pack a Punch
Storm chances ramp up after 1 p.m., with coverage peaking from midafternoon into the evening and about a 50% chance of rain across the metro. A few clusters could turn gnarly, bringing damaging wind gusts, frequent lightning, and brief but intense downpours that drop a few tenths of an inch of rain in short order, according to the National Weather Service. Storms should wind down later tonight, with lows slipping back to around 74°F.
Heat and Humidity Locked In Through Midweek
The steamy setup sticks around through at least Wednesday, July 22. Daytime highs will hover near 92°F, while overnight lows linger in the mid 70s, which means very little overnight relief and repeated heat index readings near or above 100°F in many neighborhoods. Forecasters expect the pattern of daily, afternoon-driven storms to continue into midweek and note that some communities south and east of the city could creep toward Heat Advisory criteria if the humidity stays elevated.
Plan Around Storms and Slowdowns
If you are spending time outside this afternoon, bring plenty of water and seek shade whenever you can. Have an indoor backup plan for events, since lightning and sudden heavy rain can scrub outdoor activities and tangle up commute times with little warning. Outdoor workers should work in frequent cooldown breaks and keep a close eye out for lightning. During any downpours, treat flash flooding in low spots and slick roads as a real and immediate hazard, not a minor inconvenience.
Cooling Centers and Local Help
The city has opened cooling relief sites during recent heat waves. One past option was the Selena S. Butler Park cooling center at 98 William Holmes Borders Senior Dr NE, and residents who need a break from the heat should check the City of Atlanta for current locations. For the latest watches, warnings, and hourly updates, keep an eye on the forecast for the Peachtree City and Atlanta area from the National Weather Service.
