Mosquito season in Christian County, KY: when it starts and ends

Mosquito months in Christian County

In a normal year mosquito season in Christian County, KY starts around March 22 and ends around November 10, about 33 weeks.

1. Jan
2. Feb
3. Mar
4. Apr
5. May
6. Jun
7. Jul
8. Aug
9. Sep
10. Oct
11. Nov
12. Dec

What to do in Christian County, and when

• Start tipping out standing water weekly by March 8.
• 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 Christian County are a nuisance; check window screens.

Christian County against the rest of KY

Christian County has the 4th longest season of 120 KY counties, at 233 days against 249 in Lyon County and 180 in Shelby County. Its mean temperature is 58.3°F.

• Trigg County: March 16 to November 13 (242 days, 0 WNV)
• Hopkins County: March 22 to November 12 (235 days, 4 WNV)
• Ballard County: March 22 to November 9 (232 days, 0 WNV)
• Jefferson County: March 22 to November 9 (232 days, 35 WNV)

West Nile in Christian County

From 1999 to 2025, CDC ArboNET counted 3 human West Nile cases in Christian County (3 neuroinvasive) across 1 year. The worst was 2006 with 3; the latest was 2006.

See how the dates are worked out, and when the season starts across the US.