Dangerous Heat and Heavy Rainfall into the Weekend
Hot temperatures and high humidity are forecast to continue across the mid-Mississippi Valley into this weekend. Heat Advisories remain in effect. Heavy to excessive rainfall occurring at times through the weekend could bring areas of flooding to parts of the northern Rockies, upper Midwest, central Great Lakes, and southern New England. Read More >
| NWS Forecast for: St Joseph to South Haven MI (LMZ844) Issued by: National Weather Service Grand Rapids, MI Last Update: 343 AM EDT Sat Sep 19 2026 |  |
| Rest Of Tonight: East winds 15 to 20 knots. Rain showers likely and a slight chance of thunderstorms. Waves around 1 foot. Saturday: Southeast winds 10 to 20 knots. Rain showers and a chance of thunderstorms. Patchy fog. Waves around 1 foot. Saturday Night: Southeast winds 5 to 15 knots backing east after midnight. Rain showers likely and a chance of thunderstorms. Patchy fog. Waves 1 foot or less. Sunday: Northeast winds 10 to 20 knots. Mostly cloudy with a chance of rain showers. Waves 2 to 4 feet. Sunday Night: Northeast winds 15 to 25 knots. Partly cloudy. Waves 2 to 4 feet. Monday: Northeast winds 15 to 25 knots. Mostly cloudy. Waves 2 to 4 feet. Tuesday: Northeast winds 15 to 25 knots. Partly sunny. Waves 2 to 4 feet. Wednesday: Northeast winds 15 to 20 knots. Partly sunny. Waves 1 to 3 feet. | |
| Zone Forecast: St Joseph to South Haven MI (LMZ844) | |
Visit your local NWS office at: https://www.weather.gov/grr/ |