Mosquito season in Jackson County, IN: when it starts and ends
Mosquito months in Jackson County
In a normal year mosquito season in Jackson County, IN starts around April 5 and ends around October 28, about 29 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Jackson County, and when
- Start tipping out standing water weekly by March 22.
- Book any yard treatment for early April, ahead of the July peak.
- Repellent can go away after October 28.
- No West Nile cases since 2016, so bites in Jackson County are a nuisance; check window screens.
Jackson County against the rest of IN
Jackson County has the 27th longest season of 92 IN counties, at 206 days against 231 in Floyd County and 177 in Steuben County. Its mean temperature is 53.5°F.
- Delaware County: April 6 to October 30 (207 days, 6 WNV)
- Pike County: April 7 to October 31 (207 days, 0 WNV)
- Monroe County: April 5 to October 29 (206 days, 1 WNV)
- Jennings County: April 8 to October 31 (206 days, 1 WNV)
West Nile in Jackson County
From 1999 to 2025, CDC ArboNET counted 7 human West Nile cases in Jackson County (3 neuroinvasive) across 3 years. The worst was 2002 with 5; the latest was 2012.
See how the dates are worked out, and when mosquitoes go away for the winter.