Mosquito season in Marshall County, MS: when it starts and ends
Mosquito months in Marshall County
In a normal year mosquito season in Marshall County, MS starts around March 25 and ends around November 7, about 32 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Marshall County, and when
- Start tipping out standing water weekly by March 11.
- Book any yard treatment for late March, ahead of the July peak.
- Repellent can go away after November 7.
- No West Nile cases since 2016, so bites in Marshall County are a nuisance; check window screens.
Marshall County against the rest of MS
Marshall County has the 79th longest season of 82 MS counties, at 227 days against 333 in Harrison County and 221 in Tishomingo County. Its mean temperature is 60°F.
- Tippah County: March 21 to November 10 (234 days, 0 WNV)
- Itawamba County: March 21 to November 9 (233 days, 1 WNV)
- Montgomery County: March 26 to November 7 (226 days, 1 WNV)
- Union County: March 28 to November 5 (222 days, 1 WNV)
West Nile in Marshall County
From 1999 to 2025, CDC ArboNET counted 1 human West Nile case in Marshall County (1 neuroinvasive) across 1 year. The worst was 2009 with 1; the latest was 2009.
See how the dates are worked out, and when mosquitoes go away for the winter.