Mosquito season in Pawnee County, OK: when it starts and ends
Mosquito months in Pawnee County
In a normal year mosquito season in Pawnee County, OK starts around March 31 and ends around November 1, about 31 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 17.
- Book any yard treatment for late March, ahead of the July peak.
- Repellent can go away after November 1.
- 1 West Nile case since 2016 (last 2025): you should use repellent at dusk June to September, more so if over 60.
Pawnee County against the rest of OK
Pawnee County has the 68th longest season of 77 OK counties, at 215 days against 271 in Choctaw County and 193 in Cimarron County. Its mean temperature is 60.4°F.
- Grant County: April 1 to November 4 (217 days, 2 WNV)
- Woods County: April 1 to November 3 (216 days, 1 WNV)
- Washington County: April 1 to November 2 (215 days, 4 WNV)
- Blaine County: April 3 to November 4 (215 days, 1 WNV)
West Nile in Pawnee County
From 1999 to 2025, CDC ArboNET counted 4 human West Nile cases in Pawnee County (1 neuroinvasive) across 4 years. The worst was 2025 with 1; the latest was 2025.
See how the dates are worked out, and when mosquitoes go away for the winter.