Live National Weather Service alerts, NEXRAD weather radar, USGS river and stream gauges, Storm Prediction Center convective outlooks, Local Storm Reports, 5-day forecast, air quality, and severe-weather notifications for St. Clair County, MI (FIPS 26147) in Michigan. Free, no login, no ads.
St. Clair County, MI is one of the counties of Michigan covered by BloomWX. St. Clair County, MI has a population of approximately 160,257 (2022 estimate, US Census Bureau). The county covers 721.5 square miles of land area. The county seat is Port Huron.
Port Huron, Marysville, Saint Clair, Marine City, Algonac.
St. Clair County, MI is served by the National Weather Service DTX forecast office for warnings, watches, advisories, and decision-support services. The same office produces the Hazardous Weather Outlook, Area Forecast Discussion, and DSS briefing packets you'll see on the BloomWX dashboard for this county.
BloomWX also covers the surrounding counties: Lapeer County, MI, Sanilac County, MI, Macomb County, MI.
BloomWX is a free weather operations dashboard for SKYWARN storm spotters, emergency management volunteers, ham radio nets, and anyone in St. Clair County, MI who needs the official NWS data without the consumer-app cruft. Data is pulled directly from weather.gov and refreshes every 60 seconds. Sources: National Weather Service, Storm Prediction Center, USGS Water Data, NOAA Space Weather Prediction Center, Open-Meteo (Air Quality), and the Citizen Weather Observer Program.
Read the BloomWX learn library for beginner-friendly explainers on every dashboard surface, including SPC convective outlooks (TSTM/MRGL/SLGT/ENH/MDT/HIGH), NEXRAD radar, USGS flood gauges, and WPC surface analysis charts. See all Michigan county weather dashboards on BloomWX.