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

Mosquito months in Leflore County

In a normal year mosquito season in Leflore County, MS starts around March 3 and ends around November 18, about 37 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 Leflore County, and when

• Start tipping out standing water weekly by February 17.
• Book any yard treatment for early March, ahead of the July peak.
• Repellent can go away after November 18.
• 3 West Nile cases since 2016 (last 2023): you should use repellent at dusk May to September, more so if over 60.

Leflore County against the rest of MS

Leflore County has the 49th longest season of 82 MS counties, at 260 days against 333 in Harrison County and 221 in Tishomingo County. Its mean temperature is 64.2°F.

• Neshoba County: March 4 to November 21 (262 days, 2 WNV)
• Carroll County: March 3 to November 18 (260 days, 1 WNV)
• Noxubee County: March 5 to November 20 (260 days, 2 WNV)
• Quitman County: March 5 to November 20 (260 days, 0 WNV)

West Nile in Leflore County

From 1999 to 2025, CDC ArboNET counted 29 human West Nile cases in Leflore County (12 neuroinvasive) across 13 years. The worst was 2007 with 8; the latest was 2023.

See how the dates are worked out, and when the season starts across the US.