Mosquito season in Calloway County, KY: when it starts and ends
Mosquito months in Calloway County
In a normal year mosquito season in Calloway 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 Calloway 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.
- No West Nile cases since 2016, so bites in Calloway County are a nuisance; check window screens.
Calloway County against the rest of KY
Calloway County has the 8th longest season of 120 KY counties, at 231 days against 249 in Lyon County and 180 in Shelby County. Its mean temperature is 58.8°F.
- Jefferson County: March 22 to November 9 (232 days, 35 WNV)
- Fulton County: March 23 to November 9 (231 days, 0 WNV)
- Warren County: March 24 to November 10 (231 days, 2 WNV)
- Livingston County: March 23 to November 8 (230 days, 0 WNV)
West Nile in Calloway County
CDC ArboNET lists no human West Nile cases for Calloway County from 1999 to 2025, though virus turned up in birds, mosquitoes or horses in 5 of those years.
See how the dates are worked out, and when mosquitoes go away for the winter.