Mosquito season in Robertson County, TN: when it starts and ends
Mosquito months in Robertson County
In a normal year mosquito season in Robertson County, TN starts around March 28 and ends around November 6, about 32 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Robertson County, and when
- Start tipping out standing water weekly by March 14.
- Book any yard treatment for late March, ahead of the July peak.
- Repellent can go away after November 6.
- No West Nile cases since 2016, so bites in Robertson County are a nuisance; check window screens.
Robertson County against the rest of TN
Robertson County has the 48th longest season of 95 TN counties, at 223 days against 252 in Hamilton County and 186 in Carter County. Its mean temperature is 57.9°F.
- Lincoln County: March 27 to November 6 (224 days, 0 WNV)
- Rutherford County: March 28 to November 7 (224 days, 3 WNV)
- Smith County: March 30 to November 8 (223 days, 0 WNV)
- Hamblen County: March 29 to November 6 (222 days, 1 WNV)
West Nile in Robertson County
From 1999 to 2025, CDC ArboNET counted 1 human West Nile case in Robertson County (1 neuroinvasive) across 1 year. The worst was 2011 with 1; the latest was 2011.
Background: when mosquitoes go away for the winter; how the dates are worked out.