Mosquito season in Unicoi County, TN: when it starts and ends
Mosquito months in Unicoi County
In a normal year mosquito season in Unicoi County, TN starts around April 7 and ends around October 31, about 30 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Unicoi County, and when
- Start tipping out standing water weekly by March 24.
- Book any yard treatment for early April, ahead of the July peak.
- Repellent can go away after October 31.
- No West Nile cases since 2016, so bites in Unicoi County are a nuisance; check window screens.
Unicoi County against the rest of TN
Unicoi County has the 86th longest season of 95 TN counties, at 207 days against 252 in Hamilton County and 186 in Carter County. Its mean temperature is 54.3°F.
- Washington County: April 7 to November 1 (208 days, 3 WNV)
- Cannon County: April 5 to October 29 (207 days, 0 WNV)
- Grundy County: April 7 to October 30 (206 days, 0 WNV)
- Morgan County: April 5 to October 27 (205 days, 0 WNV)
West Nile in Unicoi County
CDC ArboNET lists no human West Nile cases for Unicoi County from 1999 to 2025.
Background: when the season starts across the US; how the dates are worked out.