Mosquito season in Rhea County, TN: when it starts and ends
Mosquito months in Rhea County
In a normal year mosquito season in Rhea County, TN starts around March 30 and ends around November 7, about 32 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Rhea County, and when
- Start tipping out standing water weekly by March 16.
- Book any yard treatment for late March, ahead of the July peak.
- Repellent can go away after November 7.
- No West Nile cases since 2016, so bites in Rhea County are a nuisance; check window screens.
Rhea County against the rest of TN
Rhea County has the 52nd longest season of 95 TN counties, at 222 days against 252 in Hamilton County and 186 in Carter County. Its mean temperature is 58.2°F.
- Hamblen County: March 29 to November 6 (222 days, 1 WNV)
- Marion County: March 29 to November 6 (222 days, 0 WNV)
- Cheatham County: March 29 to November 5 (221 days, 0 WNV)
- Maury County: March 29 to November 5 (221 days, 0 WNV)
West Nile in Rhea County
CDC ArboNET lists no human West Nile cases for Rhea County from 1999 to 2025, though virus turned up in birds, mosquitoes or horses in 3 of those years.
More: how the dates are worked out · when mosquitoes go away for the winter.