Mosquito season in Cannon County, TN: when it starts and ends
Mosquito months in Cannon County
In a normal year mosquito season in Cannon County, TN starts around April 5 and ends around October 29, about 30 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Cannon County, and when
- Start tipping out standing water weekly by March 22.
- Book any yard treatment for early April, ahead of the July peak.
- Repellent can go away after October 29.
- No West Nile cases since 2016, so bites in Cannon County are a nuisance; check window screens.
Cannon County against the rest of TN
Cannon County has the 85th longest season of 95 TN counties, at 207 days against 252 in Hamilton County and 186 in Carter County. Its mean temperature is 58.4°F.
- Greene County: April 6 to November 1 (209 days, 0 WNV)
- Washington County: April 7 to November 1 (208 days, 3 WNV)
- Unicoi County: April 7 to October 31 (207 days, 0 WNV)
- Grundy County: April 7 to October 30 (206 days, 0 WNV)
West Nile in Cannon County
CDC ArboNET lists no human West Nile cases for Cannon County from 1999 to 2025, though virus turned up in birds, mosquitoes or horses in 1 of those years.
See how the dates are worked out, and when the season starts across the US.