Mosquito season in Kearney County, NE: when it starts and ends

Mosquito months in Kearney County

In a normal year mosquito season in Kearney County, NE starts around April 16 and ends around October 19, about 27 weeks.

1. Jan
2. Feb
3. Mar
4. Apr
5. May
6. Jun
7. Jul
8. Aug
9. Sep
10. Oct
11. Nov
12. Dec

What to do in Kearney County, and when

• Start tipping out standing water weekly by April 2.
• Book any yard treatment for mid April, ahead of the July peak.
• Repellent can go away after October 19.
• 11 West Nile cases since 2016: you should wear EPA-registered repellent at dusk June to August, and check NE spray notices.

Kearney County against the rest of NE

Kearney County has the 27th longest season of 93 NE counties, at 186 days against 200 in Richardson County and 127 in Sioux County. Its mean temperature is 50.5°F.

• Johnson County: April 16 to October 20 (187 days, 0 WNV)
• Saline County: April 17 to October 21 (187 days, 3 WNV)
• Seward County: April 16 to October 19 (186 days, 11 WNV)
• Merrick County: April 17 to October 20 (186 days, 11 WNV)

West Nile in Kearney County

From 1999 to 2025, CDC ArboNET counted 58 human West Nile cases in Kearney County (12 neuroinvasive) across 12 years. The worst was 2003 with 30; the latest was 2023.

Background: reading the West Nile counts; how the dates are worked out.