Mosquito season in Barber County, KS: when it starts and ends
Mosquito months in Barber County
In a normal year mosquito season in Barber County, KS starts around April 2 and ends around October 31, about 30 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Barber 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 31.
- 3 West Nile cases since 2016 (last 2025): you should use repellent at dusk June to September, more so if over 60.
Barber County against the rest of KS
Barber County has the 22nd longest season of 105 KS counties, at 212 days against 227 in Cherokee County and 178 in Thomas County. Its mean temperature is 57.4°F.
- Osage County: April 2 to November 1 (213 days, 0 WNV)
- Butler County: April 3 to November 2 (213 days, 6 WNV)
- Cowley County: April 3 to November 1 (212 days, 3 WNV)
- Harvey County: April 4 to November 2 (212 days, 1 WNV)
West Nile in Barber County
From 1999 to 2025, CDC ArboNET counted 5 human West Nile cases in Barber County (2 neuroinvasive) across 5 years. The worst was 2025 with 1; the latest was 2025.
See how the dates are worked out, and when mosquitoes go away for the winter.