Mosquito season in Bibb County, AL: when it starts and ends

Mosquito months in Bibb County

In a normal year mosquito season in Bibb County, AL starts around March 18 and ends around November 13, 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 Bibb County, and when

• Start tipping out standing water weekly by March 4.
• Book any yard treatment for mid March, ahead of the July peak.
• Repellent can go away after November 13.
• 2 West Nile cases since 2016 (last 2021): you should use repellent at dusk May to September, more so if over 60.

Bibb County against the rest of AL

Bibb County has the 55th longest season of 67 AL counties, at 240 days against 330 in Montgomery County and 218 in Marion County. Its mean temperature is 62.7°F.

• Colbert County: March 17 to November 14 (242 days, 2 WNV)
• Randolph County: March 17 to November 14 (242 days, 0 WNV)
• Cullman County: March 18 to November 11 (238 days, 5 WNV)
• Winston County: March 22 to November 13 (236 days, 0 WNV)

West Nile in Bibb County

From 1999 to 2025, CDC ArboNET counted 3 human West Nile cases in Bibb County (2 neuroinvasive) across 3 years. The worst was 2021 with 1; the latest was 2021.

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