Mosquito season in Gladwin County, MI: when it starts and ends
Mosquito months in Gladwin County
In a normal year mosquito season in Gladwin County, MI starts around May 2 and ends around October 10, about 23 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Gladwin County, and when
- Start tipping out standing water weekly by April 18.
- Book any yard treatment for early May, ahead of the July peak.
- Repellent can go away after October 10.
- No West Nile cases since 2016, so bites in Gladwin County are a nuisance; check window screens.
Gladwin County against the rest of MI
Gladwin County has the 44th longest season of 83 MI counties, at 162 days against 189 in Allegan County and 124 in Iron County. Its mean temperature is 45.6°F.
- Huron County: May 6 to October 16 (163 days, 0 WNV)
- Newaygo County: May 1 to October 11 (162 days, 1 WNV)
- Mecosta County: May 1 to October 9 (161 days, 0 WNV)
- Arenac County: May 3 to October 11 (161 days, 0 WNV)
West Nile in Gladwin County
From 1999 to 2025, CDC ArboNET counted 1 human West Nile case in Gladwin County (0 neuroinvasive) across 1 year. The worst was 2012 with 1; the latest was 2012.
See how the dates are worked out, and when mosquitoes go away for the winter.