Right now, if you step outside in Seymour, you’re hitting a wall of 27°F air. It’s sunny, sure, but that "feels like" temp of 18°F is the real story. Honestly, if you’re planning to head over to the Muscatatuck National Wildlife Refuge or just grabbing a coffee downtown, that 11 mph west wind is going to bite.
Weather in this part of Jackson County is rarely just one thing for long. We’re sitting in that weird humid subtropical transition zone where the sky can’t decide if it wants to be a winter wonderland or a soggy mess. Basically, the weather forecast Seymour Indiana looks like a rollercoaster for the next week, and if you aren't prepared for the dip, you’re gonna have a bad time.
The Immediate Outlook: Flurries and Freezing
Today, Saturday, January 17, we’re looking at a high of 30°F. Not exactly beach weather. It’ll stay partly sunny during the day, but don't let the light fool you—there’s a 20% chance of snow flurries floating around both day and night.
By the time the sun goes down, we’re dropping to a crisp 15°F.
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Tomorrow is looking even grayer. Sunday brings a high of 28°F with a 20% chance of nighttime snow. It’s that dry, powdery stuff that mostly just makes the roads look dusty until the wind kicks up. Southwest winds at 11 mph will keep the chill factor high.
What to Expect Monday through Wednesday
Monday, January 19, is when the real cold snaps. We’re talking a high of only 22°F and a low that dives into the single digits at 9°F. If you’ve got outdoor pipes that aren't insulated, this is your final warning.
- Tuesday, Jan 20: Mostly sunny. High of 28°F. A bit of a breather from the wind.
- Wednesday, Jan 21: Here comes the swing. We jump to 41°F.
- The Wind Factor: Southwest gusts hitting 17 mph on Wednesday will make that 41°F feel a lot more like 30°F.
It’s the kind of weather where you wear a heavy coat in the morning and end up carrying it by 2:00 PM. Typical Indiana.
Why the East Fork White River Matters More Than Your Radar
Everyone checks their phone for rain, but in Seymour, you should be checking the river gauges at Rockford. The East Fork White River is the lifeblood—and sometimes the headache—of this town.
We saw it in the great flood of 2008 and again just recently in April 2025. When the river hits that 12-foot flood stage, things get real. At 17 feet, it’s considered "moderate" flooding, but for folks in Little Acres or near the airport, "moderate" is a polite word for "water in the crawlspace."
When the river hits 20 feet, like it did in 1913 and nearly again in 2008, U.S. 50 starts acting like a dam. Water piles up on the north side, and suddenly, getting to Brownstown becomes a boat trip.
If the forecast calls for 7+ inches of rain over a 96-hour period (like we saw in April 2025), keep an eye on the Rockford gauge. The river usually crests about 12 hours after the heaviest rain stops.
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The Weird Science of the "Seymour Squeeze"
Ever noticed how storms seem to split right before they hit the city? Local legends talk about it all the time. While there’s no magical "Seymour Shield," the topography around the White River valley does weird things to low-level wind flow.
Minimum temperatures here actually rise faster than maximums. Over the last few decades, our winter nights have warmed up by about 2.1°F. It sounds small, but it changes the "snow vs. freezing rain" equation.
Instead of a nice 4-inch blanket of snow, we often get a half-inch of ice followed by slush. It’s messier, harder to drive in, and a nightmare for the local line crews.
Practical Survival Tips for the Next 7 Days
Forget the fancy apps for a second. If you live here, you need to know how to handle the specific quirks of a Seymour winter.
First, the wind. We have a lot of open farmland surrounding the city. A 15 mph wind in town is a 30 mph gust on the county roads. If you’re driving a high-profile vehicle on I-65, Sunday and Monday are going to be "two hands on the wheel" days.
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Second, the humidity. We stay at about 40-60% humidity even when it’s freezing. That "damp cold" goes straight to your bones. Layering isn't just a suggestion; it’s a requirement.
- Check the WWG-73 NOAA Radio: It’s broadcast right here in Seymour at 162.525 MHz. It’s faster than any app when a cell pops up.
- Watch the Saturday Night Snow: Saturday, Jan 24, is currently showing a 45% chance of snow. This could be our first real "shovel-ready" event of the month.
- Prep for Monday’s Deep Freeze: That 9°F low on Monday night is the real deal. Check your car battery now; cold is a battery killer.
Basically, stay smart. The weather forecast Seymour Indiana is telling us to keep the salt handy and the heavy blankets on the bed. By next Wednesday, we’ll be back in the 40s, and all this ice will be just another puddle on the way to work.
Next Steps for You: Check your outdoor faucets today before the temperature drops to 15°F tonight. If you’re commuting on I-65 Monday morning, give yourself an extra 15 minutes for the engine to warm up and the frost to clear.