If you’re checking the fort myers weather 10 days out, you're probably trying to figure out if you need to pack a parka or a swimsuit. Honestly, Southwest Florida in January is a bit of a gamble. One minute you’re sweating through a t-shirt at a spring training game, and the next, you’re scrambling for a windbreaker because a cold front just barreled through from the Gulf.
Today, Wednesday, January 14, 2026, it’s a bit gray out there. We’ve got a high around 72°F, but the humidity is sitting at a sticky 71%. It feels okay now, but there’s a 75% chance of rain tonight. Basically, if you’re heading out to dinner downtown near First Street, bring an umbrella.
The Wild Ride: Fort Myers Weather 10 Days Forecast
The next week and a half is going to be a rollercoaster. We are looking at a classic Florida "winter" swing where the mercury takes a nose dive before climbing back into the 80s.
Tomorrow, Thursday, the bottom falls out. A cold front is moving in, dropping our high to 64°F, but the real kicker is the overnight low of 37°F. Yes, you read that right. 37 degrees in the "Sunshine State." If you have sensitive plants or a pool heater you’ve been neglecting, now is the time to pay attention.
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Friday stays crisp. We’ll see a bright, sunny 64°F, but it’ll feel colder if you’re out in the wind. By the weekend, things start to mellow out. Saturday, January 17, is looking like the sweet spot for the Cape Coral Art Festival or the Venezia Renaissance Faire. We’re talking a high of 71°F and a low of 48°F. It's perfect "hoodie weather" for the morning and t-shirt weather by noon.
A Closer Look at the Upcoming Week
- Sunday, Jan 18: High 70°F / Low 38°F. Breezy. Very breezy. Winds hitting 17 mph from the northwest.
- Monday, Jan 19: High 62°F / Low 38°F. Full sun, but you’ll want a jacket for that walk on the beach.
- Tuesday, Jan 20: High 68°F / Low 39°F. Still chilly at night, but warming up.
- Mid-week rebound: By Wednesday and Thursday (Jan 21-22), we’re back in the 70s. Thursday might even hit 79°F.
- The humid return: Friday, January 23, is looking like a return to tropical form. We expect a high of 80°F and a 75% chance of rain.
Why the Forecast Changes So Fast
Southwest Florida weather is dictated by the Gulf of Mexico. Because the water is relatively shallow, it doesn't hold heat quite like the Atlantic does. When a cold front hits the Panhandle, there isn't much to stop it from screaming down the coast to Fort Myers.
According to data from the National Weather Service, January is technically our coldest month, with an average high of 75°F. But "average" is a lie. It’s usually either 82°F or 58°F. There is rarely an in-between.
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You also have to account for the UV index. Even on a "cool" 65-degree day, the Florida sun is intense. We’re looking at a UV index of 4 most of this week. That’s enough to give you a nasty burn if you’re out on a boat for three hours without protection. Don't be that person.
Surviving the 10-Day Swing: Pro Tips
If you're heading to the Caloosahatchee Celtic Festival later this month or just visiting family, you've got to dress in layers. It’s a cliche because it’s true.
The humidity also plays a massive role in how the temperature feels. A 60-degree day with 40% humidity feels refreshing. A 60-degree day with 80% humidity feels like it’s biting into your bones. Right now, our humidity is fluctuating wildly—dropping to 37% on Friday but spiking back to 67% by next weekend.
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What to Actually Pack
Forget the heavy wool coats. Instead, think about a light down vest or a high-quality windbreaker. You’ll use it for about two hours in the morning and then shove it in your trunk.
For footwear, flip-flops are fine for the beach, but if you’re hitting the Fort Myers Farmers Market on Saturday, wear something closed-toe. That 48-degree morning air will make your toes go numb faster than you think.
The Long-Term Reality
Looking at the fort myers weather 10 days out, we see a snapshot of a changing climate. Organizations like Climate Central have noted that our "coldest" days are actually getting warmer over the decades. While 37°F sounds freezing, these snaps are shorter and less frequent than they were thirty years ago.
Still, the volatility remains. We’re currently in a period where the "feels like" temperature can vary by 20 degrees within a single 24-hour cycle.
Actionable Steps for Your Trip
- Check the wind speed: If it’s over 15 mph, the beach will be miserable even if it's 75°F. The sand blows into everything.
- Monitor the red tide: While not strictly weather, offshore winds can bring in respiratory irritants if there's a bloom. Always check the Mote Marine Laboratory reports before heading to Sanibel or Fort Myers Beach.
- Hydrate despite the cold: You don't feel the sweat as much in 60-degree weather, but the Florida sun is still dehydrating you.
- Book indoor backups: If your 10-day window shows that 75% rain chance for next Friday, look into the Edison and Ford Winter Estates (they have great indoor museum sections) or the Sidney & Berne Davis Art Center.
Pay attention to those overnight lows. They are the best indicator of how you’ll need to start your morning. If the low is under 45°F, your morning coffee run is going to require more than just a t-shirt.