Mosquito season in Powell County, KY: when it starts and ends
Mosquito months in Powell County
In a normal year mosquito season in Powell County, KY starts around April 6 and ends around October 30, about 30 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Powell County, and when
- Start tipping out standing water weekly by March 23.
- Book any yard treatment for early April, ahead of the July peak.
- Repellent can go away after October 30.
- 1 West Nile case since 2016 (last 2025): you should use repellent at dusk June to August, more so if over 60.
Powell County against the rest of KY
Powell County has the 90th longest season of 120 KY counties, at 207 days against 249 in Lyon County and 180 in Shelby County. Its mean temperature is 54.7°F.
- Robertson County: April 5 to October 30 (207 days, 0 WNV)
- Mason County: April 6 to October 30 (207 days, 1 WNV)
- Edmonson County: April 8 to November 1 (207 days, 0 WNV)
- Crittenden County: April 6 to October 29 (206 days, 0 WNV)
West Nile in Powell County
From 1999 to 2025, CDC ArboNET counted 1 human West Nile case in Powell County (1 neuroinvasive) across 1 year. The worst was 2025 with 1; the latest was 2025.
See how the dates are worked out, and when the season starts across the US.