Mosquito season in Okmulgee County, OK: when it starts and ends

Mosquito months in Okmulgee County

In a normal year mosquito season in Okmulgee County, OK starts around March 29 and ends around November 6, about 32 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 Okmulgee County, and when

• Start tipping out standing water weekly by March 15.
• Book any yard treatment for late March, ahead of the July peak.
• Repellent can go away after November 6.
• 3 West Nile cases since 2016 (last 2024): you should use repellent at dusk June to September, more so if over 60.

Okmulgee County against the rest of OK

Okmulgee County has the 58th longest season of 77 OK counties, at 222 days against 271 in Choctaw County and 193 in Cimarron County. Its mean temperature is 60°F.

• Kingfisher County: March 29 to November 7 (223 days, 1 WNV)
• Noble County: March 28 to November 5 (222 days, 0 WNV)
• Kay County: March 29 to November 5 (221 days, 6 WNV)
• Garfield County: March 31 to November 7 (221 days, 6 WNV)

West Nile in Okmulgee County

From 1999 to 2025, CDC ArboNET counted 16 human West Nile cases in Okmulgee County (11 neuroinvasive) across 10 years. The worst was 2007 with 4; the latest was 2024.

See how the dates are worked out, and when the season starts across the US.