Mosquito season in Barton County, KS: when it starts and ends
Mosquito months in Barton County
In a normal year mosquito season in Barton County, KS starts around April 14 and ends around October 25, about 28 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Barton County, and when
- Start tipping out standing water weekly by March 31.
- Book any yard treatment for mid April, ahead of the July peak.
- Repellent can go away after October 25.
- 8 West Nile cases since 2016 (last 2023): you should use repellent at dusk June to August, more so if over 60.
Barton County against the rest of KS
Barton County has the 79th longest season of 105 KS counties, at 194 days against 227 in Cherokee County and 178 in Thomas County. Its mean temperature is 54.5°F.
- Jackson County: April 13 to October 24 (194 days, 2 WNV)
- Smith County: April 13 to October 24 (194 days, 0 WNV)
- Morton County: April 16 to October 26 (193 days, 1 WNV)
- Washington County: April 14 to October 23 (192 days, 2 WNV)
West Nile in Barton County
From 1999 to 2025, CDC ArboNET counted 41 human West Nile cases in Barton County (11 neuroinvasive) across 12 years. The worst was 2014 with 11; the latest was 2023.
Background: reading the West Nile counts; how the dates are worked out.