Mosquito season in Wayne County, IN: when it starts and ends
Mosquito months in Wayne County
In a normal year mosquito season in Wayne County, IN starts around April 12 and ends around October 24, about 28 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Wayne County, and when
- Start tipping out standing water weekly by March 29.
- Book any yard treatment for mid April, ahead of the July peak.
- Repellent can go away after October 24.
- 1 West Nile case since 2016 (last 2017): you should use repellent at dusk June to August, more so if over 60.
Wayne County against the rest of IN
Wayne County has the 51st longest season of 92 IN counties, at 195 days against 231 in Floyd County and 177 in Steuben County. Its mean temperature is 51.3°F.
- Johnson County: April 12 to October 24 (196 days, 2 WNV)
- Morgan County: April 12 to October 25 (196 days, 2 WNV)
- Tippecanoe County: April 13 to October 24 (194 days, 3 WNV)
- Warren County: April 13 to October 23 (193 days, 0 WNV)
West Nile in Wayne County
From 1999 to 2025, CDC ArboNET counted 3 human West Nile cases in Wayne County (1 neuroinvasive) across 3 years. The worst was 2017 with 1; the latest was 2017.
Background: when the season starts across the US; how the dates are worked out.