Mosquito season in Montgomery County, KS: when it starts and ends
Mosquito months in Montgomery County
In a normal year mosquito season in Montgomery County, KS starts around March 26 and ends around November 8, about 32 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Montgomery County, and when
- Start tipping out standing water weekly by March 12.
- Book any yard treatment for late March, ahead of the July peak.
- Repellent can go away after November 8.
- 1 West Nile case since 2016 (last 2025): you should use repellent at dusk June to September, more so if over 60.
Montgomery County against the rest of KS
Montgomery County has the 2nd longest season of 105 KS counties, at 227 days against 227 in Cherokee County and 178 in Thomas County. Its mean temperature is 57.7°F.
- Cherokee County: March 25 to November 7 (227 days, 1 WNV)
- Crawford County: March 27 to November 4 (223 days, 3 WNV)
- Bourbon County: March 28 to November 4 (221 days, 0 WNV)
West Nile in Montgomery County
From 1999 to 2025, CDC ArboNET counted 2 human West Nile cases in Montgomery County (2 neuroinvasive) across 2 years. The worst was 2025 with 1; the latest was 2025.
See how the dates are worked out, and when the season starts across the US.