Mosquito season in Goodhue County, MN: when it starts and ends
Mosquito months in Goodhue County
In a normal year mosquito season in Goodhue County, MN starts around April 29 and ends around October 8, about 23 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Goodhue County, and when
- Start tipping out standing water weekly by April 15.
- Book any yard treatment for late April, ahead of the July peak.
- Repellent can go away after October 8.
- 1 West Nile case since 2016 (last 2016): you should use repellent at dusk July to July, more so if over 60.
Goodhue County against the rest of MN
Goodhue County has the 41st longest season of 87 MN counties, at 162 days against 176 in Winona County and 118 in Cook County. Its mean temperature is 44.1°F.
- Jackson County: April 29 to October 9 (163 days, 3 WNV)
- Nobles County: April 29 to October 9 (163 days, 3 WNV)
- Sherburne County: April 29 to October 8 (162 days, 5 WNV)
- Mower County: April 30 to October 8 (161 days, 0 WNV)
West Nile in Goodhue County
From 1999 to 2025, CDC ArboNET counted 2 human West Nile cases in Goodhue County (2 neuroinvasive) across 2 years. The worst was 2016 with 1; the latest was 2016.
Background: when mosquitoes go away for the winter; how the dates are worked out.