Mosquito season in Jefferson Davis County, MS: when it starts and ends
Mosquito months in Jefferson Davis County
In a normal year mosquito season in Jefferson Davis County, MS starts around March 4 and ends around November 26, about 38 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Jefferson Davis County, and when
- Start tipping out standing water weekly by February 18.
- Book any yard treatment for early March, ahead of the July peak.
- Repellent can go away after November 26.
- 2 West Nile cases since 2016 (last 2016): you should use repellent at dusk May to September, more so if over 60.
Jefferson Davis County against the rest of MS
Jefferson Davis County has the 39th longest season of 82 MS counties, at 267 days against 333 in Harrison County and 221 in Tishomingo County. Its mean temperature is 66.5°F.
- Wayne County: February 28 to November 23 (268 days, 0 WNV)
- Covington County: March 4 to November 26 (267 days, 2 WNV)
- Adams County: March 1 to November 22 (266 days, 6 WNV)
- Tunica County: March 4 to November 23 (265 days, 0 WNV)
West Nile in Jefferson Davis County
From 1999 to 2025, CDC ArboNET counted 5 human West Nile cases in Jefferson Davis County (2 neuroinvasive) across 4 years. The worst was 2016 with 2; the latest was 2016.
Background: when mosquitoes go away for the winter; how the dates are worked out.