Mosquito season in Lane County, KS: when it starts and ends
Mosquito months in Lane County
In a normal year mosquito season in Lane County, KS starts around April 18 and ends around October 23, about 27 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Lane County, and when
- Start tipping out standing water weekly by April 4.
- Book any yard treatment for mid April, ahead of the July peak.
- Repellent can go away after October 23.
- 3 West Nile cases since 2016 (last 2025): you should use repellent at dusk June to August, more so if over 60.
Lane County against the rest of KS
Lane County has the 88th longest season of 105 KS counties, at 188 days against 227 in Cherokee County and 178 in Thomas County. Its mean temperature is 53.7°F.
- Lincoln County: April 17 to October 23 (189 days, 1 WNV)
- Wallace County: April 17 to October 22 (188 days, 4 WNV)
- Ness County: April 18 to October 22 (187 days, 7 WNV)
- Graham County: April 19 to October 22 (186 days, 2 WNV)
West Nile in Lane County
From 1999 to 2025, CDC ArboNET counted 5 human West Nile cases in Lane County (2 neuroinvasive) across 5 years. The worst was 2025 with 1; the latest was 2025.
Background: when mosquitoes go away for the winter; how the dates are worked out.