Mosquito season in Crawford County, MI: when it starts and ends
Mosquito months in Crawford County
In a normal year mosquito season in Crawford County, MI starts around May 10 and ends around October 5, about 21 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Crawford County, and when
- Start tipping out standing water weekly by April 26.
- Book any yard treatment for early May, ahead of the July peak.
- Repellent can go away after October 5.
- No West Nile cases since 2016, so bites in Crawford County are a nuisance; check window screens.
Crawford County against the rest of MI
Crawford County has the 65th longest season of 83 MI counties, at 148 days against 189 in Allegan County and 124 in Iron County. Its mean temperature is 43.3°F.
- Emmet County: May 10 to October 7 (149 days, 2 WNV)
- Menominee County: May 10 to October 6 (149 days, 1 WNV)
- Missaukee County: May 10 to October 5 (148 days, 0 WNV)
- Otsego County: May 9 to October 3 (147 days, 0 WNV)
West Nile in Crawford County
CDC ArboNET lists no human West Nile cases for Crawford County from 1999 to 2025, though virus turned up in birds, mosquitoes or horses in 6 of those years.
See how the dates are worked out, and when mosquitoes go away for the winter.