Mosquito season in Marion County, AL: when it starts and ends
Mosquito months in Marion County
In a normal year mosquito season in Marion County, AL starts around March 31 and ends around November 4, about 31 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Marion County, and when
- Start tipping out standing water weekly by March 17.
- Book any yard treatment for late March, ahead of the July peak.
- Repellent can go away after November 4.
- No West Nile cases since 2016, so bites in Marion County are a nuisance; check window screens.
Marion County against the rest of AL
Marion County has the 67th longest season of 67 AL counties, at 218 days against 330 in Montgomery County and 218 in Marion County. Its mean temperature is 60.8°F.
- Blount County: March 25 to November 6 (226 days, 0 WNV)
- Tallapoosa County: March 31 to November 6 (220 days, 1 WNV)
West Nile in Marion County
From 1999 to 2025, CDC ArboNET counted 1 human West Nile case in Marion County (1 neuroinvasive) across 1 year. The worst was 2002 with 1; the latest was 2002.
Background: when the season starts across the US; how the dates are worked out.