Mosquito season in Tillman County, OK: when it starts and ends
Mosquito months in Tillman County
In a normal year mosquito season in Tillman County, OK starts around March 11 and ends around November 21, about 36 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Tillman 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 21.
- No West Nile cases since 2016, so bites in Tillman County are a nuisance; check window screens.
Tillman County against the rest of OK
Tillman County has the 4th longest season of 77 OK counties, at 255 days against 271 in Choctaw County and 193 in Cimarron County. Its mean temperature is 63.2°F.
- Bryan County: March 5 to November 24 (264 days, 2 WNV)
- Carter County: March 7 to November 19 (257 days, 6 WNV)
- Okfuskee County: March 11 to November 20 (254 days, 1 WNV)
- Marshall County: March 11 to November 19 (253 days, 2 WNV)
West Nile in Tillman County
From 1999 to 2025, CDC ArboNET counted 2 human West Nile cases in Tillman County (1 neuroinvasive) across 2 years. The worst was 2012 with 1; the latest was 2012.
See how the dates are worked out, and when the season starts across the US.