Mosquito season in Calhoun County, AL: when it starts and ends
Mosquito months in Calhoun County
In a normal year mosquito season in Calhoun County, AL starts around March 8 and ends around November 21, about 37 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Calhoun County, and when
- Start tipping out standing water weekly by February 22.
- Book any yard treatment for early March, ahead of the July peak.
- Repellent can go away after November 21.
- 5 West Nile cases since 2016 (last 2025): you should use repellent at dusk June to September, more so if over 60.
Calhoun County against the rest of AL
Calhoun County has the 33rd longest season of 67 AL counties, at 258 days against 330 in Montgomery County and 218 in Marion County. Its mean temperature is 62.2°F.
- Geneva County: March 6 to November 20 (259 days, 0 WNV)
- Autauga County: March 8 to November 22 (259 days, 12 WNV)
- Clarke County: March 8 to November 21 (258 days, 0 WNV)
- Monroe County: March 8 to November 21 (258 days, 1 WNV)
West Nile in Calhoun County
From 1999 to 2025, CDC ArboNET counted 8 human West Nile cases in Calhoun County (6 neuroinvasive) across 6 years. The worst was 2023 with 2; the latest was 2025.
More: how the dates are worked out · reading the West Nile counts.