Mosquito season in Obion County, TN: when it starts and ends
Mosquito months in Obion County
In a normal year mosquito season in Obion County, TN starts around March 22 and ends around November 7, about 33 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Obion County, and when
- Start tipping out standing water weekly by March 8.
- 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 2023): you should use repellent at dusk June to September, more so if over 60.
Obion County against the rest of TN
Obion County has the 28th longest season of 95 TN counties, at 230 days against 252 in Hamilton County and 186 in Carter County. Its mean temperature is 58°F.
- Jefferson County: March 22 to November 7 (230 days, 2 WNV)
- Madison County: March 22 to November 7 (230 days, 1 WNV)
- McNairy County: March 24 to November 9 (230 days, 0 WNV)
- Lewis County: March 25 to November 10 (230 days, 0 WNV)
West Nile in Obion County
From 1999 to 2025, CDC ArboNET counted 3 human West Nile cases in Obion County (2 neuroinvasive) across 3 years. The worst was 2023 with 1; the latest was 2023.
See how the dates are worked out, and when the season starts across the US.