Mosquito season in Russell County, KS: when it starts and ends
Mosquito months in Russell County
In a normal year mosquito season in Russell County, KS starts around April 12 and ends around October 27, about 28 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Russell County, and when
- Start tipping out standing water weekly by March 29.
- Book any yard treatment for mid April, ahead of the July peak.
- Repellent can go away after October 27.
- No West Nile cases since 2016, so bites in Russell County are a nuisance; check window screens.
Russell County against the rest of KS
Russell County has the 71st longest season of 105 KS counties, at 198 days against 227 in Cherokee County and 178 in Thomas County. Its mean temperature is 54.6°F.
- Haskell County: April 12 to October 29 (200 days, 3 WNV)
- Sheridan County: April 10 to October 25 (199 days, 0 WNV)
- Republic County: April 12 to October 25 (196 days, 4 WNV)
- Ellsworth County: April 13 to October 26 (196 days, 1 WNV)
West Nile in Russell County
From 1999 to 2025, CDC ArboNET counted 2 human West Nile cases in Russell County (1 neuroinvasive) across 2 years. The worst was 2014 with 1; the latest was 2014.
See how the dates are worked out, and when mosquitoes go away for the winter.