Look, if you were planning on a light stroll through Piedmont Park this weekend without a heavy coat, you might want to rethink that life choice. Sunday weather in Atlanta is shaping up to be a legitimate reminder that winter in Georgia isn't always just "light sweater" weather.
It's going to be cold. Like, actually cold.
The data is in, and tomorrow, Sunday, January 18, 2026, we are looking at a high of exactly 41°F. When you factor in the wind, it's going to feel even sharper. Honestly, it’s one of those days where the sun looks deceivingly warm through the window, but the second you step onto the porch, the air bites back.
What to Expect When You Step Outside
The day starts off crisp—if you can even call it that. We are hitting a low of 28°F overnight, so Sunday morning will likely involve scraping a thin layer of frost off your windshield if your car isn't in a garage.
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The wind is the real kicker. We’ve got a northwest breeze coming in at 11 mph. While that doesn't sound like a gale-force storm, a constant 11 mph wind at 40 degrees creates a wind chill that makes it feel like the mid-30s most of the afternoon.
The sky? It’ll be sunny. That’s the classic Atlanta trap.
We’re seeing a 20% chance of precipitation during the day, specifically mentioned as snow. Before you rush to Kroger for bread and milk, take a breath. A 20% chance usually means a few stray flurries that melt before they even hit the pavement. It’s more of a "look at that flake" moment than a "let's build a snowman" situation.
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By the Numbers: Sunday, January 18
If you're a data person, here is the breakdown for the day:
- High Temperature: 41°F
- Low Temperature: 28°F
- Humidity: 37% (Expect dry skin and static electricity)
- UV Index: 3 (Low, but the sun is still out)
- Wind Speed: 11 mph from the Northwest
- Daytime Precip: 20% chance of snow
- Nighttime Precip: 0% (Clear skies)
Is This Normal for Atlanta?
Kinda, but it's on the cooler side of the average. Usually, Atlanta sees highs around 53°F in mid-January. Being stuck at 41°F means we are about 12 degrees below the historical norm.
The humidity is also sitting quite low at 37%. This is typical for a post-front Sunday where the air is "scoured out" by northwest winds. It’s that dry, itchy-throat kind of air.
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If you are heading to the Falcons game or just grabbing brunch in Buckhead, layers are your best friend. A base layer, a solid flannel or sweater, and a wind-breaking outer shell will keep that 11 mph wind from cutting right through you.
Why Sunday Weather in Atlanta Matters This Week
Because it’s a holiday weekend (MLK Day is Monday), many people are planning outdoor service projects or local travel. The good news is that while Sunday is chilly, the clear skies mean no major travel disruptions from rain or heavy ice.
The barometric pressure is steady, and with 0% chance of rain or snow on Sunday night, the roads will stay dry.
Basically, it’s a perfect day for indoor activities. Think museums, the Georgia Aquarium, or just a long session at a local coffee shop. If you must be outside, keep moving. That 11 mph wind feels a lot worse when you’re standing still waiting for a MARTA bus than it does when you’re walking the BeltLine.
Actionable Next Steps:
- Drip your pipes: Since the low is hitting 28°F, it's a good idea to ensure your outdoor hoses are disconnected and any vulnerable pipes are protected.
- Hydrate: Dry air at 37% humidity dehydrates you faster than you’d think.
- Check your tires: Cold snaps cause tire pressure to drop. If your "low air" light pops on Sunday morning, don't panic; it's just the physics of cold air contracting.