Mosquito season in Clare County, MI: when it starts and ends
Mosquito months in Clare County
In a normal year mosquito season in Clare County, MI starts around May 6 and ends around October 8, about 22 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Clare County, and when
- Start tipping out standing water weekly by April 22.
- Book any yard treatment for early May, ahead of the July peak.
- Repellent can go away after October 8.
- No West Nile cases since 2016, so bites in Clare County are a nuisance; check window screens.
Clare County against the rest of MI
Clare County has the 55th longest season of 83 MI counties, at 155 days against 189 in Allegan County and 124 in Iron County. Its mean temperature is 44.5°F.
- Ogemaw County: May 5 to October 7 (155 days, 0 WNV)
- Wexford County: May 5 to October 7 (155 days, 0 WNV)
- Charlevoix County: May 9 to October 11 (155 days, 0 WNV)
- Roscommon County: May 4 to October 5 (154 days, 0 WNV)
West Nile in Clare County
CDC ArboNET lists no human West Nile cases for Clare County from 1999 to 2025, though virus turned up in birds, mosquitoes or horses in 5 of those years.
Background: when the season starts across the US; how the dates are worked out.