Mosquito season in Dyer County, TN: when it starts and ends
Mosquito months in Dyer County
In a normal year mosquito season in Dyer County, TN starts around March 16 and ends around November 12, about 34 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Dyer County, and when
- Start tipping out standing water weekly by March 2.
- Book any yard treatment for mid March, ahead of the July peak.
- Repellent can go away after November 12.
- 1 West Nile case since 2016 (last 2017): you should use repellent at dusk June to September, more so if over 60.
Dyer County against the rest of TN
Dyer County has the 9th longest season of 95 TN counties, at 241 days against 252 in Hamilton County and 186 in Carter County. Its mean temperature is 59.4°F.
- Tipton County: March 15 to November 13 (242 days, 3 WNV)
- Fayette County: March 16 to November 13 (242 days, 1 WNV)
- Humphreys County: March 18 to November 13 (240 days, 0 WNV)
- Benton County: March 20 to November 14 (239 days, 0 WNV)
West Nile in Dyer County
From 1999 to 2025, CDC ArboNET counted 2 human West Nile cases in Dyer County (0 neuroinvasive) across 2 years. The worst was 2017 with 1; the latest was 2017.
More: how the dates are worked out · when mosquitoes go away for the winter.