Mosquito season in Lewis County, KY: when it starts and ends
Mosquito months in Lewis County
In a normal year mosquito season in Lewis County, KY starts around April 14 and ends around October 27, about 28 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Lewis County, and when
- Start tipping out standing water weekly by March 31.
- Book any yard treatment for mid April, ahead of the July peak.
- Repellent can go away after October 27.
- No West Nile cases since 2016, so bites in Lewis County are a nuisance; check window screens.
Lewis County against the rest of KY
Lewis County has the 114th longest season of 120 KY counties, at 196 days against 249 in Lyon County and 180 in Shelby County. Its mean temperature is 53.8°F.
- Montgomery County: April 13 to October 28 (198 days, 0 WNV)
- Lawrence County: April 12 to October 26 (197 days, 1 WNV)
- Carter County: April 14 to October 26 (195 days, 0 WNV)
- Breckinridge County: April 14 to October 25 (194 days, 1 WNV)
West Nile in Lewis County
CDC ArboNET lists no human West Nile cases for Lewis County from 1999 to 2025, though virus turned up in birds, mosquitoes or horses in 6 of those years.
Background: when mosquitoes go away for the winter; how the dates are worked out.