Mosquito season in Campbell County, KY: when it starts and ends
Mosquito months in Campbell County
In a normal year mosquito season in Campbell County, KY starts around April 3 and ends around October 31, about 30 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Campbell County, and when
- Start tipping out standing water weekly by March 20.
- Book any yard treatment for early April, ahead of the July peak.
- Repellent can go away after October 31.
- 1 West Nile case since 2016 (last 2019): you should use repellent at dusk June to August, more so if over 60.
Campbell County against the rest of KY
Campbell County has the 65th longest season of 120 KY counties, at 211 days against 249 in Lyon County and 180 in Shelby County. Its mean temperature is 54.6°F.
- Muhlenberg County: April 2 to October 30 (211 days, 0 WNV)
- Bath County: April 3 to October 31 (211 days, 0 WNV)
- Menifee County: April 3 to October 31 (211 days, 0 WNV)
- Rowan County: April 3 to October 31 (211 days, 1 WNV)
West Nile in Campbell County
From 1999 to 2025, CDC ArboNET counted 6 human West Nile cases in Campbell County (4 neuroinvasive) across 6 years. The worst was 2019 with 1; the latest was 2019.
Background: when mosquitoes go away for the winter; how the dates are worked out.