Mosquito season in Calhoun County, MS: when it starts and ends
Mosquito months in Calhoun County
In a normal year mosquito season in Calhoun County, MS starts around March 12 and ends around November 17, about 36 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 26.
- Book any yard treatment for mid March, ahead of the July peak.
- Repellent can go away after November 17.
- 9 West Nile cases since 2016 (last 2024): you should use repellent at dusk May to September, more so if over 60.
Calhoun County against the rest of MS
Calhoun County has the 61st longest season of 82 MS counties, at 250 days against 333 in Harrison County and 221 in Tishomingo County. Its mean temperature is 62.7°F.
- Pontotoc County: March 13 to November 20 (252 days, 1 WNV)
- Jasper County: March 10 to November 15 (250 days, 0 WNV)
- Benton County: March 11 to November 14 (248 days, 0 WNV)
- Grenada County: March 12 to November 15 (248 days, 3 WNV)
West Nile in Calhoun County
From 1999 to 2025, CDC ArboNET counted 20 human West Nile cases in Calhoun County (11 neuroinvasive) across 12 years. The worst was 2012 with 6; the latest was 2024.
Background: reading the West Nile counts; how the dates are worked out.