Mosquito season in Pemiscot County, MO: when it starts and ends
Mosquito months in Pemiscot County
In a normal year mosquito season in Pemiscot County, MO starts around March 16 and ends around November 13, about 35 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Pemiscot County, and when
- Start tipping out standing water weekly by March 2.
- Book any yard treatment for mid March, ahead of the July peak.
- Repellent can go away after November 13.
- No West Nile cases since 2016, so bites in Pemiscot County are a nuisance; check window screens.
Pemiscot County against the rest of MO
Pemiscot County has the 1st longest season of 115 MO counties, at 242 days against 242 in Pemiscot County and 187 in Crawford County. Its mean temperature is 59.9°F.
- Dunklin County: March 19 to November 13 (239 days, 0 WNV)
- New Madrid County: March 19 to November 10 (236 days, 1 WNV)
West Nile in Pemiscot County
From 1999 to 2025, CDC ArboNET counted 1 human West Nile case in Pemiscot County (0 neuroinvasive) across 1 year. The worst was 2005 with 1; the latest was 2005.
Background: when mosquitoes go away for the winter; how the dates are worked out.