Mosquito season in Garvin County, OK: when it starts and ends
Mosquito months in Garvin County
In a normal year mosquito season in Garvin County, OK starts around March 24 and ends around November 9, about 33 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Garvin County, and when
- Start tipping out standing water weekly by March 10.
- Book any yard treatment for late March, ahead of the July peak.
- Repellent can go away after November 9.
- 3 West Nile cases since 2016 (last 2025): you should use repellent at dusk June to September, more so if over 60.
Garvin County against the rest of OK
Garvin County has the 40th longest season of 77 OK counties, at 230 days against 271 in Choctaw County and 193 in Cimarron County. Its mean temperature is 61.6°F.
- Washita County: March 23 to November 9 (231 days, 0 WNV)
- Mayes County: March 23 to November 8 (230 days, 1 WNV)
- Seminole County: March 24 to November 9 (230 days, 2 WNV)
- Caddo County: March 25 to November 10 (230 days, 2 WNV)
West Nile in Garvin County
From 1999 to 2025, CDC ArboNET counted 6 human West Nile cases in Garvin County (3 neuroinvasive) across 4 years. The worst was 2025 with 2; the latest was 2025.
See how the dates are worked out, and when the season starts across the US.