Honestly, if you're checking the weather forecast Lake Delton Wisconsin right now, you’re probably either planning a weekend at a waterpark resort or wondering if the roads are going to be a mess for your commute. It’s Saturday, January 17, 2026, and the vibe outside is exactly what you'd expect from the heart of a Wisconsin winter: gray, biting, and a little bit unpredictable.
Right now, it’s 16°F out there. But let’s be real—the number on the thermometer is a total lie. With the wind kicking up from the west at 10 mph, it actually feels like 4°F. That’s the kind of cold that sneaks into your sleeves if you didn't tighten the Velcro on your parka. The sky is completely cloudy, and while we’ve only got a 10% chance of precipitation at the moment, don't put away the brush just yet.
The immediate weather forecast Lake Delton Wisconsin
Looking at the rest of today, Saturday, January 17, we’re topping out at a high of 20°F. Not exactly beach weather, even for the most hardened locals. Tonight, things get a bit more "Wisconsin." We’re looking at a low of 5°F with snow showers likely. The humidity is sitting high at 76%, which makes that cold feel damp and heavy rather than crisp.
If you’re driving near the lake tonight, watch out for those snow showers. The west wind is expected to pick up slightly to 12 mph. It’s not a blizzard, but in Lake Delton, even a dusting can make the intersections near the Parkway a bit slick.
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What the next few days look like
If you're staying through the early part of the week, grab the heavy-duty thermals. Sunday, January 18, is looking even colder with a high of only 16°F and a 70% chance of light snow. By Sunday night, we hit the negatives. We’re talking a low of -3°F.
Monday is the real kicker. The high is only 4°F. Basically, it’s the kind of day where you stay inside the indoor waterpark and thank your past self for booking a room with a fireplace.
Why Lake Delton weather is a different beast
Most people group Lake Delton in with the general "Wisconsin Dells" area, but being right on the water changes the microclimate slightly. In the winter, the humidity levels here often hover near 77% to 90%, significantly higher than what you might find further inland. This means the "feels like" temperature—the wind chill—hits much harder.
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Historically, January is the coldest month here. The average high is usually around 27°F, so today's high of 20°F is actually running a bit below the norm. We're currently in a bit of a cold snap that’s expected to linger.
Navigating the "Clipper" systems
You've probably heard meteorologists mention "clippers" lately. These are fast-moving storms that dive down from Canada. They don't always dump a foot of snow, but they bring that gusty west wind we’re seeing today (10–12 mph). These systems are notorious for creating "whiteout" moments on Highway 12 or I-94, even when it isn't "officially" snowing that hard.
Surviving the Lake Delton chill: Actionable advice
If you're here for the weekend, don't just look at the 20°F high and think you're fine. Here is how to actually handle the weather forecast Lake Delton Wisconsin right now:
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- Layer for the Wind: That 10 mph west wind is the real enemy. A windproof shell is more important than a thick wool sweater today.
- Check the Water Temp: If you're one of the brave souls thinking about ice fishing on Lake Delton, the water temp was recently clocked at 37°F before the surface crust thickened. Fish metabolism is slow right now. Target the deep thermal areas if you want any action.
- Watch the Sunday Night Drop: The jump from a 20°F high today to a -3°F low tomorrow night is a recipe for car battery failure. If your battery is more than three years old, maybe park it in a spot that’s easy to jump-start.
- Humidity Matters: At 77% humidity, the air holds the cold against your skin. Moisture-wicking base layers are a must, even if you aren't "exercising." Sweat is your enemy in these temps.
The bottom line? It's a classic January stretch in Lake Delton. Cloudy, snowy, and cold enough to make the indoor hot tubs feel like a masterpiece of human invention. Keep an eye on the sky tonight for those snow showers and maybe take it a few miles under the limit if you’re heading out for dinner.
Actionable Insight: Check the local radar around 6:00 PM tonight. That's when the 20% chance of snow showers is most likely to transition into more consistent flurries, potentially impacting visibility for evening plans.