Honestly, if you’ve lived around the Great Miami River for more than a week, you know the deal. One morning you’re scraping a thick sheet of ice off your windshield, and by Tuesday, you’re wondering if it’s weird to wear shorts to the grocery store. That’s just the reality of the weather for Miamisburg. It’s a bit of a moving target.
Right now, we are staring down a classic January stretch. As of Sunday, January 18, 2026, the local sensors are clocking in at a crisp 23°F. But here is the kicker: that southwest wind at 9 mph makes it feel more like 14°F. It’s that biting Midwestern chill that gets right into your bones if you aren't layered up properly.
The sky is mostly cloudy, though we’ve seen some sun peaking through earlier. If you’re heading out tonight, keep an eye on the clouds. There is a 25% chance of snow later this evening with a low of 12°F. Basically, it’s a "stay inside with a heavy blanket" kind of night.
The Week Ahead: A Rollercoaster of Temps
Tomorrow, Monday, January 19, looks pretty bright but don’t let the sun fool you. The high is only hitting 21°F, and the wind is picking up significantly. We’re looking at 17 mph gusts from the west. That’s going to make the "feels like" temperature stay in the single digits for most of the day.
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Tuesday follows a similar pattern—sunny but cold, with a low of 8°F.
Then comes Wednesday. This is where Miamisburg weather gets weird. We jump all the way up to 39°F. It’s a messy mix of rain and snow. Southwest winds will be howling at 19 mph, so it won’t exactly be a "pleasant" warm-up. It’s more of a slushy, grey transition period that usually makes the roads a nightmare.
Historical Context and Why the River Matters
Miamisburg’s relationship with the weather is historically tied to the Great Miami River. Most people remember the stories of the Great Dayton Flood of 1913, which remains the gold standard for "bad days" in our region. Even today, the USGS keeps a close watch on the river levels here.
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Currently, the gage height at Miamisburg is sitting around 3.93 feet. To give you some perspective, the "action stage" doesn't even start until 12 feet. We are nowhere near a flood threat right now, but in a town where Rice Field can go underwater after a particularly heavy spring rain, we always keep one eye on the water.
Miamisburg has also had its fair share of literal whirlwinds. A tornado back in June 1869 famously took out the Linden Avenue Bridge. More recently, 2024 and 2025 saw multiple tornado warnings across Montgomery County, proving that severe weather isn't just a "spring thing" anymore—it's a year-round possibility.
Navigating the Seasonal Shifts
If you’re planning a visit or just trying to survive the season, here’s the breakdown of what to actually expect throughout the year:
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- Winter (Dec–Feb): Expect a lot of grey. January is statistically our cloudiest month, with overcast skies about 60% of the time. Average highs hover around 38°F, but the lows frequently dip into the low 20s.
- Spring (March–May): This is the wettest time of year. May often takes the crown for precipitation, and it's when the tornado risk starts to climb.
- Summer (June–Aug): July is the scorcher. Highs average 85°F, and the humidity can get pretty thick. However, August is actually the clearest month, making it the best time for outdoor events at Riverfront Park.
- Fall (Sept–Nov): September is arguably the "sweet spot." You get 15 hours of sunshine on average and comfortable 80°F days.
Practical Advice for Miamisburg Residents
Don't trust a single forecast for more than 48 hours. Things change too fast here.
Invest in a high-quality ice scraper. Not the cheap $2 ones—get the one with the brass blade or the heavy-duty brush. You’ll need it for the freezing mist that tends to settle on cars near the river.
Keep an emergency kit in your trunk. Given the 17-19 mph winds we are seeing this week, a stalled car in 12°F weather becomes a dangerous situation fast. Toss in some hand warmers and a spare coat.
Monitor the Miami Conservancy District (MCD) updates if you live in the lower-lying areas. While the levee system is world-class, knowing the river's status during a 39°F "rain and snow" day like this coming Wednesday is just smart local living.
For the next few days, focus on the cold. We are looking at lows of 8°F Tuesday night and 4°F by Friday night. Wrap your pipes if your insulation is questionable and keep the bird feeders full—they’re going to need the energy to get through this weekend.