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

Mosquito months in McIntosh County

In a normal year mosquito season in McIntosh 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 McIntosh 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.
• 1 West Nile case since 2016 (last 2019): you should use repellent at dusk June to September, more so if over 60.

McIntosh County against the rest of OK

McIntosh County has the 26th longest season of 77 OK counties, at 239 days against 271 in Choctaw County and 193 in Cimarron County. Its mean temperature is 60.4°F.

• Tulsa County: March 17 to November 13 (241 days, 47 WNV)
• Cotton County: March 19 to November 14 (240 days, 0 WNV)
• Muskogee County: March 18 to November 12 (239 days, 6 WNV)
• Pontotoc County: March 19 to November 13 (239 days, 0 WNV)

West Nile in McIntosh County

From 1999 to 2025, CDC ArboNET counted 3 human West Nile cases in McIntosh County (2 neuroinvasive) across 3 years. The worst was 2019 with 1; the latest was 2019.

Background: when the season starts across the US; how the dates are worked out.