Mosquito season in Clarendon County, SC: when it starts and ends
Mosquito months in Clarendon County
In a normal year mosquito season in Clarendon County, SC starts around March 9 and ends around November 24, about 37 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Clarendon County, and when
- Start tipping out standing water weekly by February 23.
- Book any yard treatment for early March, ahead of the July peak.
- Repellent can go away after November 24.
- No West Nile cases since 2016, so bites in Clarendon County are a nuisance; check window screens.
Clarendon County against the rest of SC
Clarendon County has the 21st longest season of 46 SC counties, at 260 days against 349 in Charleston County and 209 in Cherokee County. Its mean temperature is 63.1°F.
- Marion County: March 4 to November 24 (265 days, 0 WNV)
- Kershaw County: March 11 to November 27 (261 days, 1 WNV)
- Anderson County: March 11 to November 24 (258 days, 5 WNV)
- Greenwood County: March 12 to November 25 (258 days, 3 WNV)
West Nile in Clarendon County
CDC ArboNET lists no human West Nile cases for Clarendon 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.