Mosquito season in DeKalb County, TN: when it starts and ends
Mosquito months in DeKalb County
In a normal year mosquito season in DeKalb County, TN starts around April 4 and ends around November 1, about 30 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in DeKalb County, and when
- Start tipping out standing water weekly by March 21.
- Book any yard treatment for early April, ahead of the July peak.
- Repellent can go away after November 1.
- No West Nile cases since 2016, so bites in DeKalb County are a nuisance; check window screens.
DeKalb County against the rest of TN
DeKalb County has the 80th longest season of 95 TN counties, at 211 days against 252 in Hamilton County and 186 in Carter County. Its mean temperature is 57.3°F.
- Campbell County: April 3 to November 1 (212 days, 0 WNV)
- White County: April 3 to November 1 (212 days, 0 WNV)
- Anderson County: April 7 to November 3 (210 days, 0 WNV)
- Union County: April 7 to November 3 (210 days, 0 WNV)
West Nile in DeKalb County
CDC ArboNET lists no human West Nile cases for DeKalb County from 1999 to 2025, though virus turned up in birds, mosquitoes or horses in 2 of those years.
More: how the dates are worked out · when the season starts across the US.