Mosquito season in Newberry County, SC: when it starts and ends
Mosquito months in Newberry County
In a normal year mosquito season in Newberry County, SC starts around March 18 and ends around November 20, about 35 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Newberry County, and when
- Start tipping out standing water weekly by March 4.
- Book any yard treatment for mid March, ahead of the July peak.
- Repellent can go away after November 20.
- 1 West Nile case since 2016 (last 2021): you should use repellent at dusk June to September, more so if over 60.
Newberry County against the rest of SC
Newberry County has the 31st longest season of 46 SC counties, at 247 days against 349 in Charleston County and 209 in Cherokee County. Its mean temperature is 61.8°F.
- Lancaster County: March 15 to November 20 (250 days, 1 WNV)
- McCormick County: March 16 to November 20 (249 days, 0 WNV)
- Lee County: March 16 to November 16 (245 days, 0 WNV)
- Saluda County: March 17 to November 16 (244 days, 0 WNV)
West Nile in Newberry County
From 1999 to 2025, CDC ArboNET counted 3 human West Nile cases in Newberry County (1 neuroinvasive) across 3 years. The worst was 2021 with 1; the latest was 2021.
See how the dates are worked out, and when mosquitoes go away for the winter.