Mosquito season in Crow Wing County, MN: when it starts and ends
Mosquito months in Crow Wing County
In a normal year mosquito season in Crow Wing County, MN starts around May 3 and ends around October 4, about 22 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Crow Wing County, and when
- Start tipping out standing water weekly by April 19.
- Book any yard treatment for early May, ahead of the July peak.
- Repellent can go away after October 4.
- 2 West Nile cases since 2016 (last 2025): you should use repellent at dusk July, more so if over 60.
Crow Wing County against the rest of MN
Crow Wing County has the 58th longest season of 87 MN counties, at 154 days against 176 in Winona County and 118 in Cook County. Its mean temperature is 41.9°F.
- Meeker County: May 2 to October 5 (156 days, 2 WNV)
- Benton County: May 3 to October 5 (155 days, 4 WNV)
- Fillmore County: May 4 to October 5 (154 days, 2 WNV)
- Cass County: May 3 to October 4 (153 days, 4 WNV)
West Nile in Crow Wing County
From 1999 to 2025, CDC ArboNET counted 4 human West Nile cases in Crow Wing County (3 neuroinvasive) across 4 years. The worst was 2025 with 1; the latest was 2025.
See how the dates are worked out, and when mosquitoes go away for the winter.