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

Mosquito months in Comanche County

In a normal year mosquito season in Comanche County, OK starts around March 11 and ends around November 16, about 36 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 Comanche County, and when

• Start tipping out standing water weekly by February 25.
• Book any yard treatment for mid March, ahead of the July peak.
• Repellent can go away after November 16.
• 8 West Nile cases since 2016 (last 2025): you should use repellent at dusk May to September, more so if over 60.

Comanche County against the rest of OK

Comanche County has the 8th longest season of 77 OK counties, at 250 days against 271 in Choctaw County and 193 in Cimarron County. Its mean temperature is 62.1°F.

• Marshall County: March 11 to November 19 (253 days, 2 WNV)
• Haskell County: March 9 to November 16 (252 days, 0 WNV)
• Stephens County: March 12 to November 16 (249 days, 8 WNV)
• Atoka County: March 12 to November 14 (247 days, 0 WNV)

West Nile in Comanche County

From 1999 to 2025, CDC ArboNET counted 29 human West Nile cases in Comanche County (22 neuroinvasive) across 14 years. The worst was 2007 with 8; the latest was 2025.

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