Honestly, everyone thinks Florida is just a permanent sauna. But if you’re looking at the ten day forecast st augustine fl, you’re probably realizing things are a bit more... complicated.
Right now, St. Augustine is playing a bit of a chilly game. Today, Sunday, January 18, 2026, we’re looking at a high of 57°F and a low that’s going to dip all the way down to 35°F. That’s not exactly "sit by the pool with a margarita" weather. It's more "grab a thick hoodie and maybe some gloves" weather. There's light rain hanging around today too, with a 77% chance of precipitation, so the air feels heavy and damp.
Decoding the Ten Day Forecast St. Augustine FL
If you're planning your week, Monday is going to be crisp. We’re talking a high of 53°F and another 35°F night. But hey, it’ll be sunny! The humidity drops to 50%, so that biting dampness should ease off.
By mid-week, the vibe shifts. Tuesday stays cool at 53°F, but Wednesday, January 21, sees a jump to 66°F. It’s going to be cloudy, though. Then Thursday settles at 62°F. It’s like the atmosphere can’t quite decide if it wants to be winter or spring.
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Here is the real kicker: Saturday, January 24. The temperature is going to spike to 71°F. Sounds great, right? Well, there’s a 75% chance of rain. So it’ll be warm, but you’re probably going to get soaked if you’re out on St. George Street without an umbrella.
Why St. Augustine Weather Is So Moody
People often forget that St. Augustine is on the coast. That Atlantic breeze is no joke. When the wind comes from the northwest—like it is today at 20 mph—it brings that continental chill straight down into the historic district.
But when the wind shifts to the northeast or east, it pulls in slightly warmer, moister air from the ocean. That's exactly why we see those temperature swings from the mid-50s to the low 70s within just a few days.
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- Sunday (Today): High 57°F, Low 35°F (Rainy)
- Monday: High 53°F, Low 35°F (Sunny)
- Wednesday: High 66°F, Low 53°F (Cloudy)
- Saturday: High 71°F, Low 58°F (Rain)
It’s basically a rollercoaster. You’ve gotta be ready for anything.
What to Actually Pack (Don't Listen to the Myths)
Most "Florida packing guides" tell you to bring flip-flops and shorts. If you do that this week, you’re going to be miserable.
You need layers. Period. A medium-weight jacket is essential for those 35°F nights. Since the humidity is often high (around 89-92% lately), the cold feels "wetter" and tends to seep into your bones more than a dry cold does.
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Honestly, I’d suggest a waterproof shell too. With rain chances hitting 77% today and 75% next Saturday, you’re going to need it.
Actionable Advice for Your Visit
- Check the Hourly, Not Just the Daily: A day that says "High 66" might only be that warm for two hours in the afternoon.
- Indoor Backups: If you’re here for the rainier days like today or next Saturday, pivot to the Lightner Museum or the Pirate & Treasure Museum. They’re dry, and honestly, the architecture is better when it's a bit moody outside.
- Wind Matters: A 53°F day with 5 mph winds is pleasant. A 53°F day with 20 mph winds (like we have today) is brutal. Dress for the wind, not just the number on the thermometer.
Keep an eye on that ten day forecast st augustine fl as you get closer to your trip. Things change fast here, but if you’ve got a good jacket and a solid pair of walking shoes, the Ancient City is pretty magical even when it’s chilly.