Mosquito season in Geary County, KS: when it starts and ends
Mosquito months in Geary County
In a normal year mosquito season in Geary County, KS starts around April 2 and ends around October 30, about 30 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Geary 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 October 30.
- No West Nile cases since 2016, so bites in Geary County are a nuisance; check window screens.
Geary County against the rest of KS
Geary County has the 25th longest season of 105 KS counties, at 211 days against 227 in Cherokee County and 178 in Thomas County. Its mean temperature is 54.8°F.
- Cowley County: April 3 to November 1 (212 days, 3 WNV)
- Harvey County: April 4 to November 2 (212 days, 1 WNV)
- Miami County: April 3 to October 31 (211 days, 1 WNV)
- Elk County: April 4 to November 1 (211 days, 0 WNV)
West Nile in Geary County
From 1999 to 2025, CDC ArboNET counted 1 human West Nile case in Geary County (0 neuroinvasive) across 1 year. The worst was 2004 with 1; the latest was 2004.
See how the dates are worked out, and when mosquitoes go away for the winter.