Ontwa, MI Weather Forecast
Cass County, Michigan
Live radar, warnings and storm tracking for Ontwa, with free alerts the moment it counts.
The next few hours
Taller, warmer bars mean heavier rain. Dotted means no reading for that hour.
Hour by hour
Sunrise and sunset
Next five days, scored 0 to 100The first day or two use the HRRR and NBM cloud layers. Later days only have total cloud, so treat them as a rough guide.
Know when sunset at this place will be worth a photo
We score every sunrise and sunset here from the cloud, haze and smoke forecast, and let you know when one is likely to light up. Sunrise the evening before, sunset a few hours ahead.
Seven-day outlook
Free alerts for Ontwa
Every NWS warning, pushed to your phone, inbox or webhook the moment it is issued.
Ontwa, MI at a glance
Ontwa is home to about 6,840 people in Cass County, across 19 square miles. It ranks 241st by population of 584 places in Michigan with a forecast here. The nearest neighbour with its own forecast is Jefferson, 4 miles away.
- County
- Cass County
- Population
- 6,840 2023 est.
- Land area
- 19 sq mi
- People per sq mi
- 352
- Forecast point
- 41.7927°N, 86.0523°W
How well can the network see Ontwa?
The nearest Doppler radar is KIWX (Fort Wayne, IN), to the SSE. Its lowest scan passes about 2,200 ft above Ontwa. Close enough to see rotation in the low part of a storm, where tornadoes form. Ontwa is closer to its radar than 63% of US cities.
The closest weather station is KEKM (Elkhart Muni). Representative on most days, though a thunderstorm can hit one and miss the other.
Forecasts near Ontwa
- Jefferson, MI4 mi
- Mason, MI6 mi
- Milton, MI6 mi
- Howard, MI7 mi
- Elkhart, IN8 mi
- Osceola, IN9 mi
- LaGrange, MI10 mi
- Mishawaka, IN10 mi
Elsewhere in Michigan
DetroitGrand RapidsWarrenSterling HeightsAnn ArborLansingAll Michigan forecasts →

