Mosquito season in Grenada County, MS: when it starts and ends
Mosquito months in Grenada County
In a normal year mosquito season in Grenada County, MS starts around March 12 and ends around November 15, about 35 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Grenada 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 15.
- 3 West Nile cases since 2016 (last 2024): you should use repellent at dusk May to September, more so if over 60.
Grenada County against the rest of MS
Grenada County has the 63rd longest season of 82 MS counties, at 248 days against 333 in Harrison County and 221 in Tishomingo County. Its mean temperature is 62.5°F.
- Calhoun County: March 12 to November 17 (250 days, 9 WNV)
- Benton County: March 11 to November 14 (248 days, 0 WNV)
- Smith County: March 12 to November 15 (248 days, 1 WNV)
- DeSoto County: March 13 to November 16 (248 days, 6 WNV)
West Nile in Grenada County
From 1999 to 2025, CDC ArboNET counted 10 human West Nile cases in Grenada County (7 neuroinvasive) across 8 years. The worst was 2002 with 3; the latest was 2024.
Background: when mosquitoes go away for the winter; how the dates are worked out.