Mosquito season in Metcalfe County, KY: when it starts and ends
Mosquito months in Metcalfe County
In a normal year mosquito season in Metcalfe County, KY starts around March 25 and ends around November 8, about 33 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Metcalfe County, and when
- Start tipping out standing water weekly by March 11.
- Book any yard treatment for late March, ahead of the July peak.
- Repellent can go away after November 8.
- 1 West Nile case since 2016 (last 2019): you should use repellent at dusk June to August, more so if over 60.
Metcalfe County against the rest of KY
Metcalfe County has the 17th longest season of 120 KY counties, at 228 days against 249 in Lyon County and 180 in Shelby County. Its mean temperature is 57.4°F.
- McLean County: March 23 to November 6 (228 days, 0 WNV)
- McCracken County: March 24 to November 7 (228 days, 9 WNV)
- Simpson County: March 26 to November 9 (228 days, 0 WNV)
- Daviess County: March 24 to November 6 (226 days, 6 WNV)
West Nile in Metcalfe County
From 1999 to 2025, CDC ArboNET counted 1 human West Nile case in Metcalfe County (0 neuroinvasive) across 1 year. The worst was 2019 with 1; the latest was 2019.
More: how the dates are worked out · when the season starts across the US.