Mosquito season in Trego County, KS: when it starts and ends
Mosquito months in Trego County
In a normal year mosquito season in Trego County, KS starts around April 13 and ends around October 26, about 28 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Trego County, and when
- Start tipping out standing water weekly by March 30.
- Book any yard treatment for mid April, ahead of the July peak.
- Repellent can go away after October 26.
- 1 West Nile case since 2016 (last 2023): you should use repellent at dusk June to August, more so if over 60.
Trego County against the rest of KS
Trego County has the 74th longest season of 105 KS counties, at 196 days against 227 in Cherokee County and 178 in Thomas County. Its mean temperature is 53.9°F.
- Republic County: April 12 to October 25 (196 days, 4 WNV)
- Ellsworth County: April 13 to October 26 (196 days, 1 WNV)
- Hodgeman County: April 14 to October 27 (196 days, 1 WNV)
- Gove County: April 13 to October 24 (194 days, 0 WNV)
West Nile in Trego County
From 1999 to 2025, CDC ArboNET counted 6 human West Nile cases in Trego County (3 neuroinvasive) across 5 years. The worst was 2004 with 2; the latest was 2023.
More: how the dates are worked out · when the season starts across the US.