Mosquito season in Cullman County, AL: when it starts and ends
Mosquito months in Cullman County
In a normal year mosquito season in Cullman County, AL starts around March 18 and ends around November 11, about 34 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Cullman 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 11.
- 5 West Nile cases since 2016 (last 2025): you should use repellent at dusk June to September, more so if over 60.
Cullman County against the rest of AL
Cullman County has the 56th longest season of 67 AL counties, at 238 days against 330 in Montgomery County and 218 in Marion County. Its mean temperature is 60.4°F.
- Randolph County: March 17 to November 14 (242 days, 0 WNV)
- Bibb County: March 18 to November 13 (240 days, 2 WNV)
- Winston County: March 22 to November 13 (236 days, 0 WNV)
- Clay County: March 22 to November 11 (234 days, 0 WNV)
West Nile in Cullman County
From 1999 to 2025, CDC ArboNET counted 6 human West Nile cases in Cullman County (3 neuroinvasive) across 5 years. The worst was 2024 with 2; the latest was 2025.
More: how the dates are worked out · reading the West Nile counts.