Mosquito season in Benton County, IN: when it starts and ends
Mosquito months in Benton County
In a normal year mosquito season in Benton County, IN starts around April 15 and ends around October 22, about 27 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Benton County, and when
- Start tipping out standing water weekly by April 1.
- Book any yard treatment for mid April, ahead of the July peak.
- Repellent can go away after October 22.
- No West Nile cases since 2016, so bites in Benton County are a nuisance; check window screens.
Benton County against the rest of IN
Benton County has the 68th longest season of 92 IN counties, at 190 days against 231 in Floyd County and 177 in Steuben County. Its mean temperature is 50.2°F.
- White County: April 15 to October 23 (191 days, 1 WNV)
- Dearborn County: April 17 to October 25 (191 days, 0 WNV)
- Putnam County: April 15 to October 22 (190 days, 0 WNV)
- Adams County: April 16 to October 23 (190 days, 0 WNV)
West Nile in Benton County
From 1999 to 2025, CDC ArboNET counted 1 human West Nile case in Benton County (1 neuroinvasive) across 1 year. The worst was 2004 with 1; the latest was 2004.
More: how the dates are worked out · when the season starts across the US.