Mosquito season in Adams County, IN: when it starts and ends
Mosquito months in Adams County
In a normal year mosquito season in Adams County, IN starts around April 16 and ends around October 23, about 27 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Adams County, and when
- Start tipping out standing water weekly by April 2.
- 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 Adams County are a nuisance; check window screens.
Adams County against the rest of IN
Adams County has the 70th longest season of 92 IN counties, at 190 days against 231 in Floyd County and 177 in Steuben County. Its mean temperature is 50.7°F.
- Benton County: April 15 to October 22 (190 days, 0 WNV)
- Putnam County: April 15 to October 22 (190 days, 0 WNV)
- Allen County: April 16 to October 23 (190 days, 11 WNV)
- Grant County: April 16 to October 23 (190 days, 2 WNV)
West Nile in Adams County
From 1999 to 2025, CDC ArboNET counted 17 human West Nile cases in Adams County (3 neuroinvasive) across 6 years. The worst was 2002 with 8; the latest was 2012.
Background: when the season starts across the US; how the dates are worked out.