Mosquito season in Winston County, MS: when it starts and ends

Mosquito months in Winston County

In a normal year mosquito season in Winston County, MS starts around March 7 and ends around November 27, about 38 weeks.

1. Jan
2. Feb
3. Mar
4. Apr
5. May
6. Jun
7. Jul
8. Aug
9. Sep
10. Oct
11. Nov
12. Dec

What to do in Winston County, and when

• Start tipping out standing water weekly by February 21.
• Book any yard treatment for early March, ahead of the July peak.
• Repellent can go away after November 27.
• No West Nile cases since 2016, so bites in Winston County are a nuisance; check window screens.

Winston County against the rest of MS

Winston County has the 42nd longest season of 82 MS counties, at 265 days against 333 in Harrison County and 221 in Tishomingo County. Its mean temperature is 63.5°F.

• Adams County: March 1 to November 22 (266 days, 6 WNV)
• Tunica County: March 4 to November 23 (265 days, 0 WNV)
• Coahoma County: March 4 to November 23 (264 days, 0 WNV)
• Attala County: March 5 to November 24 (264 days, 3 WNV)

West Nile in Winston County

From 1999 to 2025, CDC ArboNET counted 2 human West Nile cases in Winston County (0 neuroinvasive) across 2 years. The worst was 2012 with 1; the latest was 2012.

Background: when mosquitoes go away for the winter; how the dates are worked out.