Mosquito season in Wright County, MO: when it starts and ends
Mosquito months in Wright County
In a normal year mosquito season in Wright County, MO starts around April 2 and ends around November 1, about 30 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Wright County, and when
- Start tipping out standing water weekly by March 19.
- Book any yard treatment for early April, ahead of the July peak.
- Repellent can go away after November 1.
- No West Nile cases since 2016, so bites in Wright County are a nuisance; check window screens.
Wright County against the rest of MO
Wright County has the 53rd longest season of 115 MO counties, at 213 days against 242 in Pemiscot County and 187 in Crawford County. Its mean temperature is 55.3°F.
- Pulaski County: April 1 to October 31 (213 days, 2 WNV)
- Bates County: April 2 to November 1 (213 days, 0 WNV)
- Cass County: April 2 to October 31 (212 days, 1 WNV)
- Howard County: April 2 to October 31 (212 days, 0 WNV)
West Nile in Wright County
From 1999 to 2025, CDC ArboNET counted 1 human West Nile case in Wright County (1 neuroinvasive) across 1 year. The worst was 2006 with 1; the latest was 2006.
Background: when the season starts across the US; how the dates are worked out.