If you've spent more than five minutes in Sheboygan County, you know the drill. One minute you're thinking about a quick walk through Meyer Nature Park, and the next, the wind off the lake is basically trying to relocate your face to Minnesota. Honestly, the weather forecast for Plymouth Wisconsin is less of a scientific prediction and more of a daily negotiation with the elements.
Right now, we are staring down the barrel of a classic Wisconsin January. If you stepped outside this morning, Friday, January 16, 2026, you probably felt that immediate "yep, it’s winter" sting. We’re sitting at 23°F, but thanks to a southwest wind at about 9 mph, it feels more like 12°F.
And the snow? It’s here. We have a 95% chance of light to moderate snow currently falling. It’s that fine, powdery stuff that doesn’t look like much until you’re trying to brake at a stoplight on Eastern Avenue.
What’s Actually Happening Today
The high for today is expected to top out at 33°F, which sounds almost balmy until you realize the wind is shifting to the west and picking up to 13 mph. We’ve got light snow throughout the daytime hours with a 42% chance of precipitation.
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Tonight, things get a bit more interesting. The temperature is going to drop down to 18°F, and those snow showers are sticking around, though the chance dips to 20%. It’s the kind of night where you just stay in, grab some Sartori cheese, and let the plow trucks do their thing.
The Breakdown of the Week Ahead
- Saturday, January 17: Expect a high of 26°F and a low of 15°F. The snow showers aren't quite done with us yet, with a 60% chance of seeing more white stuff, especially in the afternoon.
- Sunday, January 18: The "Arctic Revenge" people keep talking about starts to show its teeth. We're looking at a high of only 17°F and a low of 7°F.
- Monday, January 19: It stays cold. Another high of 17°F, but the overnight low is going to dive to 3°F.
Most people think Plymouth stays a bit warmer because we’re tucked inland from the immediate lakefront, but that’s a total myth. We get the "lake effect" moisture without the "lake moderation" warmth. Basically, we get the worst of both worlds when a system pulls from the east.
Why the "Cheese Capital" Weather is So Weird
Historically, January is the coldest month of the year here, and 2026 isn't breaking many records yet, but it's keeping us on our toes. The average high is usually around 27°F, so today's 33°F is technically a "warm" spike before the bottom falls out next week.
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According to National Weather Service data, we usually see about 12.7 inches of snow in January. We’re on track to hit that easily if these small "clipper" systems keep rolling through every two days. It’s not the big 10-inch blizzards that get you; it’s the constant two-inch "dustings" that turn the roads into skating rinks.
You've gotta remember that Plymouth’s elevation—about 860 feet—plays a tiny role too. We’re just high enough and just far enough from the Lake Michigan shoreline that we don't always get the "changeover" to rain that Milwaukee or even Sheboygan might see. If it’s falling here, it’s usually snow.
Survival Tips for the Next 48 Hours
If you're heading out to the grocery store or taking the kids to the park, don't trust the thermometer. Trust the wind chill. When it says 33°F but feels like 21°F, that West wind is going to cut right through a fleece jacket. You need a windbreaker layer.
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Also, keep an eye on the humidity. It’s sitting at 87% right now. That "wet cold" is the kind that gets into your bones and stays there. It’s significantly more miserable than a dry 10°F day in the Dakotas.
What to Watch for Next Week
The Polar Vortex is starting to wobble. While we're seeing highs in the 30s today, the long-range models are hinting at a much more significant Arctic push by the end of the month. We might see those overnight lows dip into the negatives by the 24th or 25th.
For now, just focus on the light snow today and the dropping temperatures tonight. Check your tire pressure—it always drops when these cold fronts hit—and maybe clear the sidewalk before that 18-degree low turns the slush into concrete tomorrow morning.
Actionable Next Steps:
Keep your gas tank at least half full to prevent fuel line freeze-up as temperatures drop toward the single digits this weekend. If you’re driving between Plymouth and Sheboygan on Highway 23, expect blowing snow and reduced visibility this evening as the wind shifts to the west. Follow the Milwaukee/Sullivan NWS station for the most localized radar updates if the snow intensity picks up unexpectedly.