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

Mosquito months in Oktibbeha County

In a normal year mosquito season in Oktibbeha County, MS starts around March 7 and ends around November 22, 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 Oktibbeha 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 22.
• 3 West Nile cases since 2016 (last 2025): you should use repellent at dusk May to September, more so if over 60.

Oktibbeha County against the rest of MS

Oktibbeha County has the 54th longest season of 82 MS counties, at 260 days against 333 in Harrison County and 221 in Tishomingo County. Its mean temperature is 63.4°F.

• Clay County: March 7 to November 22 (260 days, 2 WNV)
• Lee County: March 7 to November 22 (260 days, 8 WNV)
• Amite County: March 6 to November 20 (259 days, 0 WNV)
• Madison County: March 7 to November 19 (257 days, 25 WNV)

West Nile in Oktibbeha County

From 1999 to 2025, CDC ArboNET counted 8 human West Nile cases in Oktibbeha County (5 neuroinvasive) across 5 years. The worst was 2002 with 4; the latest was 2025.

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