Mosquito season in Kenton County, KY: when it starts and ends

Mosquito months in Kenton County

In a normal year mosquito season in Kenton County, KY starts around April 5 and ends around October 31, about 30 weeks.

1. Jan
2. Feb
3. Mar
4. Apr
5. May
6. Jun
7. Jul
8. Aug
9. Sep
10. Oct
11. Nov
12. Dec

What to do in Kenton 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 31.
• 8 West Nile cases since 2016 (last 2024): you should use repellent at dusk June to August, more so if over 60.

Kenton County against the rest of KY

Kenton County has the 83rd longest season of 120 KY counties, at 209 days against 249 in Lyon County and 180 in Shelby County. Its mean temperature is 54.2°F.

• Greenup County: April 5 to October 31 (209 days, 1 WNV)
• Johnson County: April 5 to October 31 (209 days, 0 WNV)
• Knox County: April 6 to November 1 (209 days, 0 WNV)
• Meade County: April 6 to November 1 (209 days, 0 WNV)

West Nile in Kenton County

From 1999 to 2025, CDC ArboNET counted 19 human West Nile cases in Kenton County (12 neuroinvasive) across 12 years. The worst was 2018 with 3; the latest was 2024.

See how the dates are worked out, and reading the West Nile counts.