Mosquito season in Schoolcraft County, MI: when it starts and ends
Mosquito months in Schoolcraft County
In a normal year mosquito season in Schoolcraft County, MI starts around May 17 and ends around October 4, about 20 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Schoolcraft County, and when
- Start tipping out standing water weekly by May 3.
- Book any yard treatment for mid May, ahead of the July peak.
- Repellent can go away after October 4.
- No West Nile cases since 2016, so bites in Schoolcraft County are a nuisance; check window screens.
Schoolcraft County against the rest of MI
Schoolcraft County has the 78th longest season of 83 MI counties, at 140 days against 189 in Allegan County and 124 in Iron County. Its mean temperature is 41.7°F.
- Gogebic County: May 12 to September 30 (141 days, 0 WNV)
- Luce County: May 14 to October 2 (141 days, 0 WNV)
- Keweenaw County: May 16 to October 2 (139 days, 1 WNV)
- Alger County: May 18 to October 4 (139 days, 0 WNV)
West Nile in Schoolcraft County
CDC ArboNET lists no human West Nile cases for Schoolcraft County from 1999 to 2025, though virus turned up in birds, mosquitoes or horses in 7 of those years.
See how the dates are worked out, and when mosquitoes go away for the winter.