Mosquito season in Lincoln County, WI: when it starts and ends
Mosquito months in Lincoln County
In a normal year mosquito season in Lincoln County, WI starts around May 7 and ends around October 2, about 21 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Lincoln County, and when
- Start tipping out standing water weekly by April 23.
- Book any yard treatment for early May, ahead of the July peak.
- Repellent can go away after October 2.
- 1 West Nile case since 2016 (last 2020): you should use repellent at dusk July, more so if over 60.
Lincoln County against the rest of WI
Lincoln County has the 60th longest season of 72 WI counties, at 148 days against 180 in La Crosse County and 139 in Rusk County. Its mean temperature is 41.1°F.
- Juneau County: May 5 to October 3 (151 days, 3 WNV)
- Douglas County: May 7 to October 4 (151 days, 3 WNV)
- Sawyer County: May 7 to October 2 (148 days, 2 WNV)
- Langlade County: May 8 to October 2 (148 days, 0 WNV)
West Nile in Lincoln County
From 1999 to 2025, CDC ArboNET counted 2 human West Nile cases in Lincoln County (1 neuroinvasive) across 2 years. The worst was 2020 with 1; the latest was 2020.
Background: when the season starts across the US; how the dates are worked out.