Historical weather data, all-time temperature records, and monthly climate averages for Grosse Ile, MI. Explore typical weather conditions by week for trip planning, and see how today compares to the historical record.
April 5th in Grosse Ile runs a wide gamut — the date has seen everything from a balmy 78° back in 1988 to a brutal 17° low in 1995. Today's historical average sits at a cool 52° high and 33° low, firmly in early-spring territory. There's nearly a coin-flip chance of precipitation (45%), with a lingering 10% shot at snow.
Grosse Ile's weather has real teeth at both extremes — the thermometer has soared to 104° and plunged to -21°, a swing of 125 degrees across the station's history. A single August storm in 2014 dumped 4.57 inches of rain, and December 1974 buried the island under 18.4 inches of snow in one day.
Summer is the clear sweet spot here, with late July averaging a comfortable 84° high and June bringing the year's heaviest rainfall. If you're cold-averse, avoid mid-January when highs average just 30°. Spring and fall offer a pleasant shoulder season, with April climbing into the upper 50s and October still holding at 62°.