Mosquito season in Warren County, KY: when it starts and ends
Mosquito months in Warren County
In a normal year mosquito season in Warren County, KY starts around March 24 and ends around November 10, about 33 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Warren County, and when
- Start tipping out standing water weekly by March 10.
- Book any yard treatment for late March, ahead of the July peak.
- Repellent can go away after November 10.
- 2 West Nile cases since 2016 (last 2023): you should use repellent at dusk June to September, more so if over 60.
Warren County against the rest of KY
Warren County has the 9th longest season of 120 KY counties, at 231 days against 249 in Lyon County and 180 in Shelby County. Its mean temperature is 59.1°F.
- Fulton County: March 23 to November 9 (231 days, 0 WNV)
- Calloway County: March 24 to November 10 (231 days, 0 WNV)
- Livingston County: March 23 to November 8 (230 days, 0 WNV)
- Carlisle County: March 23 to November 7 (229 days, 0 WNV)
West Nile in Warren County
From 1999 to 2025, CDC ArboNET counted 3 human West Nile cases in Warren County (2 neuroinvasive) across 3 years. The worst was 2023 with 1; the latest was 2023.
More: how the dates are worked out · when the season starts across the US.