Mosquito season in Franklin County, KS: when it starts and ends
Mosquito months in Franklin County
In a normal year mosquito season in Franklin County, KS starts around April 8 and ends around October 30, about 29 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Franklin 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 30.
- 1 West Nile case since 2016 (last 2016): you should use repellent at dusk June to August, more so if over 60.
Franklin County against the rest of KS
Franklin County has the 45th longest season of 105 KS counties, at 205 days against 227 in Cherokee County and 178 in Thomas County. Its mean temperature is 54.6°F.
- Seward County: April 9 to November 1 (206 days, 2 WNV)
- Kearny County: April 7 to October 29 (205 days, 2 WNV)
- Stanton County: April 9 to October 31 (205 days, 2 WNV)
- Pratt County: April 9 to October 30 (204 days, 6 WNV)
West Nile in Franklin County
From 1999 to 2025, CDC ArboNET counted 2 human West Nile cases in Franklin County (2 neuroinvasive) across 2 years. The worst was 2016 with 1; the latest was 2016.
Background: when the season starts across the US; how the dates are worked out.