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

Mosquito months in Kingfisher County

In a normal year mosquito season in Kingfisher County, OK starts around March 29 and ends around November 7, 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 Kingfisher 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 7.
• 1 West Nile case since 2016 (last 2021): you should use repellent at dusk June to September, more so if over 60.

Kingfisher County against the rest of OK

Kingfisher County has the 56th longest season of 77 OK counties, at 223 days against 271 in Choctaw County and 193 in Cimarron County. Its mean temperature is 59.9°F.

• Lincoln County: March 28 to November 7 (224 days, 1 WNV)
• Osage County: March 28 to November 6 (223 days, 1 WNV)
• Noble County: March 28 to November 5 (222 days, 0 WNV)
• Okmulgee County: March 29 to November 6 (222 days, 3 WNV)

West Nile in Kingfisher County

From 1999 to 2025, CDC ArboNET counted 10 human West Nile cases in Kingfisher County (5 neuroinvasive) across 6 years. The worst was 2015 with 3; the latest was 2021.

See how the dates are worked out, and when mosquitoes go away for the winter.