Mosquito season in Monroe County, KY: when it starts and ends
Mosquito months in Monroe County
In a normal year mosquito season in Monroe County, KY starts around April 12 and ends around October 27, about 28 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Monroe 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 27.
- 2 West Nile cases since 2016 (last 2021): you should use repellent at dusk June to August, more so if over 60.
Monroe County against the rest of KY
Monroe County has the 110th longest season of 120 KY counties, at 198 days against 249 in Lyon County and 180 in Shelby County. Its mean temperature is 57.2°F.
- Spencer County: April 10 to October 25 (198 days, 0 WNV)
- Cumberland County: April 12 to October 27 (198 days, 0 WNV)
- Clark County: April 13 to October 28 (198 days, 2 WNV)
- Montgomery County: April 13 to October 28 (198 days, 0 WNV)
West Nile in Monroe County
From 1999 to 2025, CDC ArboNET counted 3 human West Nile cases in Monroe County (3 neuroinvasive) across 3 years. The worst was 2021 with 1; the latest was 2021.
See how the dates are worked out, and when mosquitoes go away for the winter.