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

Mosquito months in Perkins County

In a normal year mosquito season in Perkins County, NE starts around April 24 and ends around October 15, about 25 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 Perkins County, and when

• Start tipping out standing water weekly by April 10.
• Book any yard treatment for late April, ahead of the July peak.
• Repellent can go away after October 15.
• 11 West Nile cases since 2016: you should wear EPA-registered repellent at dusk July to August, and check NE spray notices.

Perkins County against the rest of NE

Perkins County has the 61st longest season of 93 NE counties, at 174 days against 200 in Richardson County and 127 in Sioux County. Its mean temperature is 49.9°F.

• Dixon County: April 23 to October 14 (174 days, 3 WNV)
• Cherry County: April 24 to October 15 (174 days, 0 WNV)
• Antelope County: April 23 to October 13 (173 days, 6 WNV)
• Lincoln County: April 25 to October 15 (173 days, 30 WNV)

West Nile in Perkins County

From 1999 to 2025, CDC ArboNET counted 38 human West Nile cases in Perkins County (6 neuroinvasive) across 13 years. The worst was 2003 with 14; the latest was 2024.

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