Mosquito season in Bourbon County, KY: when it starts and ends
Mosquito months in Bourbon County
In a normal year mosquito season in Bourbon County, KY starts around April 5 and ends around October 31, about 30 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Bourbon 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.
- No West Nile cases since 2016, so bites in Bourbon County are a nuisance; check window screens.
Bourbon County against the rest of KY
Bourbon County has the 80th longest season of 120 KY counties, at 209 days against 249 in Lyon County and 180 in Shelby County. Its mean temperature is 54.8°F.
- Adair County: April 6 to November 2 (210 days, 0 WNV)
- Russell County: April 6 to November 2 (210 days, 0 WNV)
- Greenup County: April 5 to October 31 (209 days, 1 WNV)
- Johnson County: April 5 to October 31 (209 days, 0 WNV)
West Nile in Bourbon County
From 1999 to 2025, CDC ArboNET counted 1 human West Nile case in Bourbon County (0 neuroinvasive) across 1 year. The worst was 2012 with 1; the latest was 2012.
Background: when the season starts across the US; how the dates are worked out.