Mosquito season in York County, NE: when it starts and ends
Mosquito months in York County
In a normal year mosquito season in York County, NE starts around April 14 and ends around October 22, about 27 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in York County, and when
- Start tipping out standing water weekly by March 31.
- Book any yard treatment for mid April, ahead of the July peak.
- Repellent can go away after October 22.
- 12 West Nile cases since 2016: you should wear EPA-registered repellent at dusk June to August, and check NE spray notices.
York County against the rest of NE
York County has the 16th longest season of 93 NE counties, at 191 days against 200 in Richardson County and 127 in Sioux County. Its mean temperature is 51.1°F.
- Harlan County: April 13 to October 22 (191 days, 2 WNV)
- Sarpy County: April 14 to October 22 (191 days, 56 WNV)
- Lancaster County: April 15 to October 22 (190 days, 91 WNV)
- Dodge County: April 15 to October 20 (189 days, 29 WNV)
West Nile in York County
From 1999 to 2025, CDC ArboNET counted 75 human West Nile cases in York County (21 neuroinvasive) across 17 years. The worst was 2003 with 31; the latest was 2023.
See how the dates are worked out, and reading the West Nile counts.