Honestly, if you've lived in North Georgia for more than a week, you know the drill. You walk out the door in a heavy parka and by lunchtime, you're looking for a place to stash your layers because the sun decided to show up. But today, Sunday, January 18, 2026, is playing by a different set of rules.
It's cold. Like, actually cold.
Right now in Kennesaw, we are sitting at a crisp 34°F. That might not sound like "Arctic tundra" territory to our friends up north, but when you factor in that west wind moving at 8 mph, it feels like 28°F on your face. It's the kind of night where you realize that draft under the front door is more than just a minor annoyance.
The Breakdown: Kennesaw ga weather hourly
If you’re planning your Monday morning commute or just trying to figure out when to walk the dog without freezing, here is the deal. We hit a high of 40°F earlier today under a pretty decent sun, but don't let that clear sky fool you. Tonight, it's dropping. We are looking at a low of 28°F.
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Basically, the humidity is hanging around 41%, and the UV index is effectively zero since, well, it’s nighttime. But the big takeaway for anyone checking the kennesaw ga weather hourly is the consistency. No weird midnight rain. No surprise fog rolling off Kennesaw Mountain. Just clear, cold, and dry air.
Why this January feels different
Usually, January in our neck of the woods is a messy mix. Historically, the average high is around 51°F, but 2026 is trending a bit more aggressive with the cold snaps. We saw a tiny 10% chance of snow earlier today—did you see any? Probably not, but the atmosphere was definitely thinking about it.
The wind is the real main character today. While it's 8 mph right now, we've seen gusts from the northwest hitting up to 13 mph throughout the afternoon. That’s enough to pull the heat right out of a brick house.
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What to expect for the rest of the week
If you’re looking at the local forecast to see when the "thaw" happens, keep your expectations low for Monday. While we’ll see plenty of sun, the temperatures are staying stubborn.
- Humidity levels: Expect it to stay dry, hovering around 36% to 41%.
- Wind direction: Mostly staying out of the west or northwest, which keeps that chill alive.
- Precipitation: It's looking bone-dry for the next 24 hours. The 0% chance of snow tonight is pretty much a lock.
The reality is that Kennesaw's microclimate, influenced by the elevation and the mountain, can sometimes trap this cold air longer than downtown Atlanta does. If you’re over near the KSU campus or heading toward the battlefield, expect it to feel a couple of degrees sharper than what your phone's generic app might say.
How to handle the Kennesaw chill
Don't be the person who assumes it'll "warm up by ten." It won't.
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Check your tire pressure. These sudden drops from 40°F to 28°F are notorious for triggering that annoying "low pressure" light on your dashboard. Also, if you’ve got those outdoor plants that you meant to bring in back in November, tonight is the night to finally do it or cover them up.
Keep an eye on that wind chill. If you're out early Monday morning, that "feels like" temperature is going to be the only number that matters. Dress for the 20s, not the 30s.
Wrap your pipes if you're in one of the older neighborhoods around Main Street. It’s better to be safe for a night than to deal with a mess on Monday afternoon.
Stay warm, Kennesaw.