Mosquito season in Oceana County, MI: when it starts and ends
Mosquito months in Oceana County
In a normal year mosquito season in Oceana County, MI starts around May 2 and ends around October 13, about 23 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Oceana 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 13.
- No West Nile cases since 2016, so bites in Oceana County are a nuisance; check window screens.
Oceana County against the rest of MI
Oceana County has the 37th longest season of 83 MI counties, at 164 days against 189 in Allegan County and 124 in Iron County. Its mean temperature is 46.4°F.
- Tuscola County: April 29 to October 14 (168 days, 4 WNV)
- Sanilac County: May 2 to October 14 (165 days, 4 WNV)
- Benzie County: May 3 to October 14 (164 days, 0 WNV)
- Grand Traverse County: May 3 to October 14 (164 days, 1 WNV)
West Nile in Oceana County
CDC ArboNET lists no human West Nile cases for Oceana County from 1999 to 2025, though virus turned up in birds, mosquitoes or horses in 5 of those years.
See how the dates are worked out, and when the season starts across the US.