Mosquito season in Doniphan County, KS: when it starts and ends
Mosquito months in Doniphan County
In a normal year mosquito season in Doniphan County, KS starts around April 8 and ends around October 27, about 29 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Doniphan County, and when
- Start tipping out standing water weekly by March 25.
- Book any yard treatment for early April, ahead of the July peak.
- Repellent can go away after October 27.
- 1 West Nile case since 2016 (last 2025): you should use repellent at dusk June to August, more so if over 60.
Doniphan County against the rest of KS
Doniphan County has the 55th longest season of 105 KS counties, at 202 days against 227 in Cherokee County and 178 in Thomas County. Its mean temperature is 53.1°F.
- Ellis County: April 9 to October 29 (203 days, 5 WNV)
- Meade County: April 9 to October 29 (203 days, 5 WNV)
- Mitchell County: April 8 to October 27 (202 days, 2 WNV)
- Clay County: April 9 to October 28 (202 days, 2 WNV)
West Nile in Doniphan County
From 1999 to 2025, CDC ArboNET counted 2 human West Nile cases in Doniphan County (2 neuroinvasive) across 2 years. The worst was 2025 with 1; the latest was 2025.
Background: when the season starts across the US; how the dates are worked out.