Mosquito season in Coffey County, KS: when it starts and ends
Mosquito months in Coffey County
In a normal year mosquito season in Coffey County, KS starts around April 2 and ends around November 2, about 31 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Coffey County, and when
- Start tipping out standing water weekly by March 19.
- Book any yard treatment for early April, ahead of the July peak.
- Repellent can go away after November 2.
- No West Nile cases since 2016, so bites in Coffey County are a nuisance; check window screens.
Coffey County against the rest of KS
Coffey County has the 16th longest season of 105 KS counties, at 214 days against 227 in Cherokee County and 178 in Thomas County. Its mean temperature is 55.8°F.
- Sumner County: April 3 to November 5 (216 days, 1 WNV)
- Johnson County: April 1 to November 1 (214 days, 25 WNV)
- Dickinson County: April 2 to November 2 (214 days, 6 WNV)
- Morris County: April 1 to October 31 (213 days, 0 WNV)
West Nile in Coffey County
CDC ArboNET lists no human West Nile cases for Coffey County from 1999 to 2025, though virus turned up in birds, mosquitoes or horses in 4 of those years.
See how the dates are worked out, and when mosquitoes go away for the winter.