Mosquito season in Allendale County, SC: when it starts and ends
Mosquito months in Allendale County
In a normal year mosquito season in Allendale County, SC starts around March 13 and ends around November 19, about 36 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Allendale County, and when
- Start tipping out standing water weekly by February 27.
- Book any yard treatment for mid March, ahead of the July peak.
- Repellent can go away after November 19.
- 1 West Nile case since 2016 (last 2023): you should use repellent at dusk May to September, more so if over 60.
Allendale County against the rest of SC
Allendale County has the 27th longest season of 46 SC counties, at 251 days against 349 in Charleston County and 209 in Cherokee County. Its mean temperature is 63.7°F.
- Abbeville County: March 13 to November 22 (254 days, 0 WNV)
- Sumter County: March 13 to November 21 (253 days, 3 WNV)
- Dillon County: March 14 to November 20 (251 days, 1 WNV)
- Lancaster County: March 15 to November 20 (250 days, 1 WNV)
West Nile in Allendale County
From 1999 to 2025, CDC ArboNET counted 1 human West Nile case in Allendale County (1 neuroinvasive) across 1 year. The worst was 2023 with 1; the latest was 2023.
Background: when mosquitoes go away for the winter; how the dates are worked out.