You’re probably looking at the window right now and wondering if you actually need that heavy coat for a walk on the beach or if a light hoodie will do. Honestly, the 15 day forecast for biloxi mississippi is a bit of a moving target this week. We are sitting in that classic January "identity crisis" period where the Gulf of Mexico tries to stay warm while the North sends down reminders that it’s still winter.
It’s confusing. One day it’s 60°F and you’re thinking about a round of golf at Sunkist, and the next, the wind chill makes it feel like you’ve been transported to Chicago.
What the 15 day forecast for biloxi mississippi Actually Looks Like
Let's cut through the noise. For the next two weeks, Biloxi is basically a seesaw. We are looking at a series of cold fronts that are going to keep our high temperatures bouncing between the high 40s and the mid-60s.
The Immediate Outlook (Jan 14 - Jan 20)
Right now, as of Wednesday, January 14, 2026, we’ve got a bit of a chill settling in.
Tonight is going to be clear but brisk, with lows dipping down to about 43°F. If you’re heading out to the casinos or grabbing dinner in the Vieux Marche, definitely bring a jacket. Tomorrow, Thursday the 15th, looks gorgeous but cool—plenty of sun with a high of only 51°F.
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The real "wild card" shows up this weekend. Saturday, Jan 17, brings some cloud cover and a decent 40% chance of rain by Saturday night. If you have outdoor plans, Sunday actually looks like the better day for a walk at the Lighthouse, even though it’ll be one of our coldest days with a high of just 46°F.
- Jan 15: Sunny and 51°F.
- Jan 18: Very cold for us. Sunny, but only 46°F.
- Jan 19: Rebounding slightly to 54°F.
The Following Week (Jan 21 - Jan 28)
This is where the humidity starts to creep back in. By mid-week, around Jan 21, the wind shifts to the east and south, dragging that moisture off the water. You’ll feel it. The air gets heavier, and the temperatures climb back into the 60s.
By Friday, Jan 23, we are looking at a high of 64°F, but it comes with a price: rain. There’s a solid 45% chance of showers that Friday, and it might linger into Saturday the 24th. This is that typical "gray Biloxi" weather where the mist just hangs over Beach Blvd.
Why the Gulf Coast Weather is So Unpredictable
You might hear people talk about "La Niña" this year. According to the National Weather Service, we are currently in a weak La Niña pattern. Traditionally, this means the Deep South stays a bit warmer and drier than average.
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But "average" is a funny word.
It doesn't mean we don't get cold snaps; it just means they don't last as long. A single "Polar Vortex" can dip down and wreck a week of perfectly good beach weather. Also, because we are right on the water, the humidity makes the cold feel "wet." A 40-degree day in Biloxi feels significantly more bone-chilling than a 40-degree day in a dry climate like El Paso.
Humidity and Your Plans
The humidity is hovering around 81% right now. That high moisture content is why we see so much fog at the Biloxi Small Craft Harbor this time of year. When that warm Gulf air hits the cooler land, everything just disappears in a white haze. If you're driving Highway 90 early in the morning, be careful—that fog is no joke.
Practical Advice for the Next 14-15 Days
If you’re a local or just visiting the Coast, here is the reality of how to handle this forecast.
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Don't trust the sun. Just because it's sunny doesn't mean it's warm. On Sunday the 18th, the UV index is a 3, which means the sun is out, but that northwest wind at 13 mph is going to make it feel like 38°F.
Layers are your best friend. You basically need a "morning kit" and an "afternoon kit." Start with a base layer, add a sweater, and keep a windbreaker in the car. By 2:00 PM, you’ll be stripping down to a t-shirt, but by 5:30 PM when the sun drops, you'll want that coat again.
Watch the wind. Wind is the real factor in Biloxi. A north wind is dry and cold. A south wind is wet and warm. For the next 15 days, we are seeing a lot of northwest and northeast winds, which means it’s going to stay on the "crisp" side for a while.
Actionable Next Steps for You
Since the weather is going to be a bit damp and chilly over the next two weeks, shift your focus to indoor activities or short outdoor windows.
- Plan your outdoor activities for Jan 16 or Jan 19. These days look the clearest and most manageable for a walk or some fishing.
- Check your tire pressure. These sudden drops from 60°F to 35°F will definitely trigger that annoying "low pressure" light on your dashboard.
- Seal your windows. If you live in one of the older historic homes near downtown, that humidity will seep right through. A little weather stripping goes a long way this week.
- Keep an eye on the 23rd. If you’re planning a boat trip or a charter, that’s your high-risk day for rain and wind gusts up to 12-15 mph.
The 15 day forecast for biloxi mississippi shows a transition from cold and dry to mild and wet. Stay ahead of the fronts, and don't let a little coastal chill ruin your plans.