Mosquito season in Rankin County, MS: when it starts and ends
Mosquito months in Rankin County
In a normal year mosquito season in Rankin County, MS starts around February 28 and ends around November 28, about 39 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Rankin County, and when
- Start tipping out standing water weekly by February 14.
- Book any yard treatment for late February, ahead of the July peak.
- Repellent can go away after November 28.
- 32 West Nile cases since 2016: you should wear EPA-registered repellent at dusk May to September, and check MS spray notices.
Rankin County against the rest of MS
Rankin County has the 25th longest season of 82 MS counties, at 273 days against 333 in Harrison County and 221 in Tishomingo County. Its mean temperature is 65.8°F.
- Franklin County: February 28 to November 29 (274 days, 0 WNV)
- Kemper County: February 27 to November 27 (273 days, 0 WNV)
- Copiah County: February 28 to November 27 (272 days, 9 WNV)
- Lauderdale County: February 28 to November 27 (272 days, 2 WNV)
West Nile in Rankin County
From 1999 to 2025, CDC ArboNET counted 171 human West Nile cases in Rankin County (89 neuroinvasive) across 21 years. The worst was 2012 with 45; the latest was 2025.
Background: reading the West Nile counts; how the dates are worked out.