Mosquito season in Putnam County, TN: when it starts and ends
Mosquito months in Putnam County
In a normal year mosquito season in Putnam County, TN starts around April 1 and ends around November 3, about 31 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Putnam County, and when
- Start tipping out standing water weekly by March 18.
- Book any yard treatment for early April, ahead of the July peak.
- Repellent can go away after November 3.
- No West Nile cases since 2016, so bites in Putnam County are a nuisance; check window screens.
Putnam County against the rest of TN
Putnam County has the 66th longest season of 95 TN counties, at 216 days against 252 in Hamilton County and 186 in Carter County. Its mean temperature is 57.4°F.
- Overton County: April 1 to November 3 (216 days, 0 WNV)
- Perry County: April 1 to November 3 (216 days, 0 WNV)
- Sevier County: April 2 to November 4 (216 days, 2 WNV)
- Wayne County: April 2 to November 3 (215 days, 0 WNV)
West Nile in Putnam County
From 1999 to 2025, CDC ArboNET counted 2 human West Nile cases in Putnam County (2 neuroinvasive) across 2 years. The worst was 2013 with 1; the latest was 2013.
More: how the dates are worked out · when the season starts across the US.