Mosquito season in Boone County, KY: when it starts and ends
Mosquito months in Boone County
In a normal year mosquito season in Boone County, KY starts around April 5 and ends around November 1, about 30 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Boone 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 November 1.
- 1 West Nile case since 2016 (last 2022): you should use repellent at dusk June to August, more so if over 60.
Boone County against the rest of KY
Boone County has the 72nd longest season of 120 KY counties, at 210 days against 249 in Lyon County and 180 in Shelby County. Its mean temperature is 54.5°F.
- Perry County: April 6 to November 3 (211 days, 0 WNV)
- Nicholas County: April 4 to October 31 (210 days, 0 WNV)
- Breathitt County: April 5 to November 1 (210 days, 1 WNV)
- Garrard County: April 5 to November 1 (210 days, 0 WNV)
West Nile in Boone County
From 1999 to 2025, CDC ArboNET counted 4 human West Nile cases in Boone County (2 neuroinvasive) across 4 years. The worst was 2022 with 1; the latest was 2022.
More: how the dates are worked out · when the season starts across the US.