Mosquito season in Caldwell County, KY: when it starts and ends
Mosquito months in Caldwell County
In a normal year mosquito season in Caldwell County, KY starts around March 30 and ends around November 2, about 31 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Caldwell County, and when
- Start tipping out standing water weekly by March 16.
- Book any yard treatment for late March, ahead of the July peak.
- Repellent can go away after November 2.
- No West Nile cases since 2016, so bites in Caldwell County are a nuisance; check window screens.
Caldwell County against the rest of KY
Caldwell County has the 36th longest season of 120 KY counties, at 217 days against 249 in Lyon County and 180 in Shelby County. Its mean temperature is 58.7°F.
- Trimble County: March 31 to November 4 (218 days, 0 WNV)
- Wolfe County: March 31 to November 4 (218 days, 0 WNV)
- Boyd County: March 31 to November 3 (217 days, 1 WNV)
- Clinton County: March 31 to November 3 (217 days, 0 WNV)
West Nile in Caldwell County
CDC ArboNET lists no human West Nile cases for Caldwell County from 1999 to 2025, though virus turned up in birds, mosquitoes or horses in 4 of those years.
See how the dates are worked out, and when mosquitoes go away for the winter.