Mosquito season in Trimble County, KY: when it starts and ends
Mosquito months in Trimble County
In a normal year mosquito season in Trimble County, KY starts around March 31 and ends around November 4, about 31 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Trimble County, and when
- Start tipping out standing water weekly by March 17.
- Book any yard treatment for late March, ahead of the July peak.
- Repellent can go away after November 4.
- No West Nile cases since 2016, so bites in Trimble County are a nuisance; check window screens.
Trimble County against the rest of KY
Trimble County has the 34th longest season of 120 KY counties, at 218 days against 249 in Lyon County and 180 in Shelby County. Its mean temperature is 55.9°F.
- Fayette County: March 31 to November 4 (218 days, 10 WNV)
- Henderson County: March 31 to November 4 (218 days, 3 WNV)
- Wolfe County: March 31 to November 4 (218 days, 0 WNV)
- Caldwell County: March 30 to November 2 (217 days, 0 WNV)
West Nile in Trimble County
CDC ArboNET lists no human West Nile cases for Trimble County from 1999 to 2025, though virus turned up in birds, mosquitoes or horses in 1 of those years.
More: how the dates are worked out · when the season starts across the US.