Mosquito season in Warren County, IN: when it starts and ends
Mosquito months in Warren County
In a normal year mosquito season in Warren County, IN starts around April 13 and ends around October 23, about 28 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Warren County, and when
- Start tipping out standing water weekly by March 30.
- Book any yard treatment for mid April, ahead of the July peak.
- Repellent can go away after October 23.
- No West Nile cases since 2016, so bites in Warren County are a nuisance; check window screens.
Warren County against the rest of IN
Warren County has the 53rd longest season of 92 IN counties, at 193 days against 231 in Floyd County and 177 in Steuben County. Its mean temperature is 50.7°F.
- Wayne County: April 12 to October 24 (195 days, 1 WNV)
- Tippecanoe County: April 13 to October 24 (194 days, 3 WNV)
- Miami County: April 14 to October 25 (193 days, 0 WNV)
- Randolph County: April 14 to October 24 (193 days, 1 WNV)
West Nile in Warren County
CDC ArboNET lists no human West Nile cases for Warren County from 1999 to 2025, though virus turned up in birds, mosquitoes or horses in 10 of those years.
More: how the dates are worked out · when mosquitoes go away for the winter.