Mosquito season in Carroll County, KY: when it starts and ends
Mosquito months in Carroll County
In a normal year mosquito season in Carroll County, KY starts around March 29 and ends around November 3, about 31 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Carroll County, and when
- Start tipping out standing water weekly by March 15.
- Book any yard treatment for late March, ahead of the July peak.
- Repellent can go away after November 3.
- No West Nile cases since 2016, so bites in Carroll County are a nuisance; check window screens.
Carroll County against the rest of KY
Carroll County has the 29th longest season of 120 KY counties, at 219 days against 249 in Lyon County and 180 in Shelby County. Its mean temperature is 55.9°F.
- Mercer County: March 29 to November 4 (220 days, 0 WNV)
- Grant County: March 31 to November 6 (220 days, 0 WNV)
- Nelson County: March 31 to November 5 (219 days, 1 WNV)
- Washington County: March 31 to November 5 (219 days, 0 WNV)
West Nile in Carroll County
CDC ArboNET lists no human West Nile cases for Carroll 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.