Mosquito season in Allen County, KY: when it starts and ends
Mosquito months in Allen County
In a normal year mosquito season in Allen County, KY starts around April 1 and ends around November 2, about 31 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Allen County, and when
- Start tipping out standing water weekly by March 18.
- Book any yard treatment for early April, ahead of the July peak.
- Repellent can go away after November 2.
- 1 West Nile case since 2016 (last 2024): you should use repellent at dusk June to August, more so if over 60.
Allen County against the rest of KY
Allen County has the 48th longest season of 120 KY counties, at 215 days against 249 in Lyon County and 180 in Shelby County. Its mean temperature is 57°F.
- Jackson County: April 2 to November 4 (216 days, 0 WNV)
- Ohio County: March 31 to November 1 (215 days, 0 WNV)
- Hardin County: April 1 to November 2 (215 days, 0 WNV)
- Harlan County: April 1 to November 2 (215 days, 0 WNV)
West Nile in Allen County
From 1999 to 2025, CDC ArboNET counted 1 human West Nile case in Allen County (1 neuroinvasive) across 1 year. The worst was 2024 with 1; the latest was 2024.
Background: when mosquitoes go away for the winter; how the dates are worked out.