Mosquito season in Dodge County, WI: when it starts and ends
Mosquito months in Dodge County
In a normal year mosquito season in Dodge County, WI starts around April 29 and ends around October 11, about 24 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Dodge 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 11.
- 1 West Nile case since 2016 (last 2017): you should use repellent at dusk July to July, more so if over 60.
Dodge County against the rest of WI
Dodge County has the 23rd longest season of 72 WI counties, at 165 days against 180 in La Crosse County and 139 in Rusk County. Its mean temperature is 45.3°F.
- Iowa County: April 27 to October 11 (167 days, 1 WNV)
- Sheboygan County: May 3 to October 17 (166 days, 3 WNV)
- Green Lake County: April 29 to October 11 (165 days, 0 WNV)
- Calumet County: April 30 to October 12 (165 days, 3 WNV)
West Nile in Dodge County
From 1999 to 2025, CDC ArboNET counted 7 human West Nile cases in Dodge County (6 neuroinvasive) across 5 years. The worst was 2012 with 2; the latest was 2017.
See how the dates are worked out, and when the season starts across the US.