Mosquito season in Greer County, OK: when it starts and ends
Mosquito months in Greer County
In a normal year mosquito season in Greer County, OK starts around March 27 and ends around November 10, about 33 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Greer County, and when
- Start tipping out standing water weekly by March 13.
- Book any yard treatment for late March, ahead of the July peak.
- Repellent can go away after November 10.
- No West Nile cases since 2016, so bites in Greer County are a nuisance; check window screens.
Greer County against the rest of OK
Greer County has the 47th longest season of 77 OK counties, at 228 days against 271 in Choctaw County and 193 in Cimarron County. Its mean temperature is 60.6°F.
- Grady County: March 25 to November 8 (228 days, 1 WNV)
- Rogers County: March 25 to November 8 (228 days, 2 WNV)
- Harmon County: March 25 to November 7 (227 days, 0 WNV)
- Woodward County: March 25 to November 7 (227 days, 3 WNV)
West Nile in Greer County
From 1999 to 2025, CDC ArboNET counted 1 human West Nile case in Greer County (0 neuroinvasive) across 1 year. The worst was 2003 with 1; the latest was 2003.
See how the dates are worked out, and when the season starts across the US.