Mosquito season in Tulsa County, OK: when it starts and ends
Mosquito months in Tulsa County
In a normal year mosquito season in Tulsa County, OK starts around March 17 and ends around November 13, about 34 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Tulsa County, and when
- Start tipping out standing water weekly by March 3.
- Book any yard treatment for mid March, ahead of the July peak.
- Repellent can go away after November 13.
- 47 West Nile cases since 2016: you should wear EPA-registered repellent at dusk June to September, and check OK spray notices.
Tulsa County against the rest of OK
Tulsa County has the 24th longest season of 77 OK counties, at 241 days against 271 in Choctaw County and 193 in Cimarron County. Its mean temperature is 61.2°F.
- Latimer County: March 18 to November 15 (242 days, 0 WNV)
- Oklahoma County: March 17 to November 13 (241 days, 64 WNV)
- Cotton County: March 19 to November 14 (240 days, 0 WNV)
- McIntosh County: March 18 to November 12 (239 days, 1 WNV)
West Nile in Tulsa County
From 1999 to 2025, CDC ArboNET counted 166 human West Nile cases in Tulsa County (115 neuroinvasive) across 20 years. The worst was 2007 with 34; the latest was 2025.
See how the dates are worked out, and reading the West Nile counts.