Mosquito season in Fayette County, KY: when it starts and ends
Mosquito months in Fayette County
In a normal year mosquito season in Fayette County, KY starts around March 31 and ends around November 4, about 31 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Fayette 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 4.
- 10 West Nile cases since 2016: you should wear EPA-registered repellent at dusk June to August, and check KY spray notices.
Fayette County against the rest of KY
Fayette County has the 32nd longest season of 120 KY counties, at 218 days against 249 in Lyon County and 180 in Shelby County. Its mean temperature is 56°F.
- Nelson County: March 31 to November 5 (219 days, 1 WNV)
- Washington County: March 31 to November 5 (219 days, 0 WNV)
- Henderson County: March 31 to November 4 (218 days, 3 WNV)
- Trimble County: March 31 to November 4 (218 days, 0 WNV)
West Nile in Fayette County
From 1999 to 2025, CDC ArboNET counted 14 human West Nile cases in Fayette County (12 neuroinvasive) across 7 years. The worst was 2025 with 5; the latest was 2025.
See how the dates are worked out, and reading the West Nile counts.