Mosquito season in Casey County, KY: when it starts and ends
Mosquito months in Casey County
In a normal year mosquito season in Casey County, KY starts around April 11 and ends around October 30, about 29 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Casey County, and when
- Start tipping out standing water weekly by March 28.
- Book any yard treatment for mid April, ahead of the July peak.
- Repellent can go away after October 30.
- No West Nile cases since 2016, so bites in Casey County are a nuisance; check window screens.
Casey County against the rest of KY
Casey County has the 101st longest season of 120 KY counties, at 202 days against 249 in Lyon County and 180 in Shelby County. Its mean temperature is 55.5°F.
- Magoffin County: April 11 to October 31 (203 days, 0 WNV)
- McCreary County: April 10 to October 29 (202 days, 1 WNV)
- Gallatin County: April 11 to October 30 (202 days, 0 WNV)
- Marion County: April 11 to October 30 (202 days, 0 WNV)
West Nile in Casey County
CDC ArboNET lists no human West Nile cases for Casey County from 1999 to 2025, though virus turned up in birds, mosquitoes or horses in 2 of those years.
More: how the dates are worked out · when the season starts across the US.