Mosquito season in Ohio County, KY: when it starts and ends
Mosquito months in Ohio County
In a normal year mosquito season in Ohio County, KY starts around March 31 and ends around November 1, about 31 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Ohio County, and when
- Start tipping out standing water weekly by March 17.
- Book any yard treatment for late March, ahead of the July peak.
- Repellent can go away after November 1.
- No West Nile cases since 2016, so bites in Ohio County are a nuisance; check window screens.
Ohio County against the rest of KY
Ohio County has the 47th longest season of 120 KY counties, at 215 days against 249 in Lyon County and 180 in Shelby County. Its mean temperature is 56.8°F.
- Laurel County: April 1 to November 3 (216 days, 0 WNV)
- Jackson County: April 2 to November 4 (216 days, 0 WNV)
- Allen County: April 1 to November 2 (215 days, 1 WNV)
- Hardin County: April 1 to November 2 (215 days, 0 WNV)
West Nile in Ohio County
CDC ArboNET lists no human West Nile cases for Ohio County from 1999 to 2025, though virus turned up in birds, mosquitoes or horses in 3 of those years.
Background: when the season starts across the US; how the dates are worked out.