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

Mosquito months in Muskogee County

In a normal year mosquito season in Muskogee County, OK starts around March 18 and ends around November 12, about 34 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 Muskogee County, and when

• Start tipping out standing water weekly by March 4.
• Book any yard treatment for mid March, ahead of the July peak.
• Repellent can go away after November 12.
• 6 West Nile cases since 2016 (last 2025): you should use repellent at dusk June to September, more so if over 60.

Muskogee County against the rest of OK

Muskogee County has the 27th longest season of 77 OK counties, at 239 days against 271 in Choctaw County and 193 in Cimarron County. Its mean temperature is 60.8°F.

• Cotton County: March 19 to November 14 (240 days, 0 WNV)
• McIntosh County: March 18 to November 12 (239 days, 1 WNV)
• Pontotoc County: March 19 to November 13 (239 days, 0 WNV)
• Kiowa County: March 21 to November 13 (237 days, 1 WNV)

West Nile in Muskogee County

From 1999 to 2025, CDC ArboNET counted 20 human West Nile cases in Muskogee County (11 neuroinvasive) across 10 years. The worst was 2007 with 5; the latest was 2025.

See how the dates are worked out, and reading the West Nile counts.