Mosquito season in Pawnee County, NE: when it starts and ends
Mosquito months in Pawnee County
In a normal year mosquito season in Pawnee County, NE starts around April 12 and ends around October 24, about 28 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Pawnee County, and when
- Start tipping out standing water weekly by March 29.
- Book any yard treatment for mid April, ahead of the July peak.
- Repellent can go away after October 24.
- 1 West Nile case since 2016 (last 2024): you should use repellent at dusk June to August, more so if over 60.
Pawnee County against the rest of NE
Pawnee County has the 4th longest season of 93 NE counties, at 195 days against 200 in Richardson County and 127 in Sioux County. Its mean temperature is 51.7°F.
- Fillmore County: April 11 to October 25 (197 days, 9 WNV)
- Douglas County: April 11 to October 23 (195 days, 150 WNV)
- Thayer County: April 13 to October 23 (193 days, 7 WNV)
- Adams County: April 13 to October 22 (192 days, 17 WNV)
West Nile in Pawnee County
From 1999 to 2025, CDC ArboNET counted 5 human West Nile cases in Pawnee County (2 neuroinvasive) across 4 years. The worst was 2003 with 2; the latest was 2024.
See how the dates are worked out, and when the season starts across the US.