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

Mosquito months in Lafayette County

In a normal year mosquito season in Lafayette County, MS starts around March 21 and ends around November 12, about 34 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 Lafayette County, and when

• Start tipping out standing water weekly by March 7.
• Book any yard treatment for late March, ahead of the July peak.
• Repellent can go away after November 12.
• No West Nile cases since 2016, so bites in Lafayette County are a nuisance; check window screens.

Lafayette County against the rest of MS

Lafayette County has the 76th longest season of 82 MS counties, at 236 days against 333 in Harrison County and 221 in Tishomingo County. Its mean temperature is 61.9°F.

• Prentiss County: March 20 to November 13 (238 days, 3 WNV)
• Alcorn County: March 20 to November 11 (236 days, 2 WNV)
• Tippah County: March 21 to November 10 (234 days, 0 WNV)
• Itawamba County: March 21 to November 9 (233 days, 1 WNV)

West Nile in Lafayette County

CDC ArboNET lists no human West Nile cases for Lafayette 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 the season starts across the US.