Casco, MI Weather Forecast
St. Clair County, Michigan
Live radar, warnings and storm tracking for Casco, 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 Casco
Every NWS warning, pushed to your phone, inbox or webhook the moment it is issued.
Casco, MI at a glance
Casco is home to about 4,003 people in St. Clair County, across 37 square miles. It ranks 382nd by population of 584 places in Michigan with a forecast here. The nearest neighbour with its own forecast is Ira, 5 miles away.
- County
- St. Clair County
- Population
- 4,003 2023 est.
- Land area
- 37 sq mi
- People per sq mi
- 109
- Forecast point
- 42.7646°N, 82.6668°W
How well can the network see Casco?
The nearest Doppler radar is KDTX (Detroit, MI), to the W. Its lowest scan passes about 2,700 ft above Casco. Close enough to see rotation in the low part of a storm, where tornadoes form. Casco is closer to its radar than 54% of US cities.
The closest weather station is KPHN (Port Huron/St Clair Cnty). Representative on most days, though a thunderstorm can hit one and miss the other.
Forecasts near Casco
- Ira, MI5 mi
- China, MI5 mi
- Richmond, MI5 mi
- New Baltimore, MI7 mi
- Columbus, MI7 mi
- Lenox, MI7 mi
- New Haven, MI7 mi
- Cottrellville, MI7 mi
Elsewhere in Michigan
DetroitGrand RapidsWarrenSterling HeightsAnn ArborLansingAll Michigan forecasts →

