Mosquito season in Lincoln County, MN: when it starts and ends
Mosquito months in Lincoln County
In a normal year mosquito season in Lincoln County, MN starts around May 2 and ends around October 7, about 23 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 18.
- Book any yard treatment for early May, ahead of the July peak.
- Repellent can go away after October 7.
- 2 West Nile cases since 2016 (last 2025): you should use repellent at dusk July to July, more so if over 60.
Lincoln County against the rest of MN
Lincoln County has the 52nd longest season of 87 MN counties, at 158 days against 176 in Winona County and 118 in Cook County. Its mean temperature is 43°F.
- Stearns County: May 1 to October 7 (158 days, 12 WNV)
- Wilkin County: May 1 to October 6 (158 days, 6 WNV)
- Clay County: May 1 to October 5 (157 days, 30 WNV)
- Douglas County: May 2 to October 6 (157 days, 6 WNV)
West Nile in Lincoln County
From 1999 to 2025, CDC ArboNET counted 14 human West Nile cases in Lincoln County (3 neuroinvasive) across 7 years. The worst was 2006 with 3; the latest was 2025.
Background: when mosquitoes go away for the winter; how the dates are worked out.