Mosquito season in Marshall County, AL: when it starts and ends
Mosquito months in Marshall County
In a normal year mosquito season in Marshall County, AL starts around March 4 and ends around November 23, about 38 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Marshall County, and when
- Start tipping out standing water weekly by February 18.
- Book any yard treatment for early March, ahead of the July peak.
- Repellent can go away after November 23.
- No West Nile cases since 2016, so bites in Marshall County are a nuisance; check window screens.
Marshall County against the rest of AL
Marshall County has the 22nd longest season of 67 AL counties, at 264 days against 330 in Montgomery County and 218 in Marion County. Its mean temperature is 61.7°F.
- Etowah County: March 4 to November 24 (265 days, 3 WNV)
- Wilcox County: March 3 to November 22 (264 days, 0 WNV)
- Chilton County: March 5 to November 23 (263 days, 5 WNV)
- Limestone County: March 6 to November 24 (263 days, 4 WNV)
West Nile in Marshall County
From 1999 to 2025, CDC ArboNET counted 3 human West Nile cases in Marshall County (1 neuroinvasive) across 2 years. The worst was 2007 with 2; the latest was 2007.
See how the dates are worked out, and when the season starts across the US.