Mosquito season in Waupaca County, WI: when it starts and ends
Mosquito months in Waupaca County
In a normal year mosquito season in Waupaca County, WI starts around April 30 and ends around October 9, about 23 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Waupaca County, and when
- Start tipping out standing water weekly by April 16.
- Book any yard treatment for late April, ahead of the July peak.
- Repellent can go away after October 9.
- No West Nile cases since 2016, so bites in Waupaca County are a nuisance; check window screens.
Waupaca County against the rest of WI
Waupaca County has the 37th longest season of 72 WI counties, at 162 days against 180 in La Crosse County and 139 in Rusk County. Its mean temperature is 44.7°F.
- Dunn County: April 30 to October 9 (162 days, 2 WNV)
- Pepin County: April 30 to October 9 (162 days, 1 WNV)
- Trempealeau County: April 30 to October 8 (161 days, 7 WNV)
- Wood County: April 30 to October 8 (161 days, 5 WNV)
West Nile in Waupaca County
CDC ArboNET lists no human West Nile cases for Waupaca County from 1999 to 2025, though virus turned up in birds, mosquitoes or horses in 9 of those years.
Background: when mosquitoes go away for the winter; how the dates are worked out.