Mosquito season in Dent County, MO: when it starts and ends
Mosquito months in Dent County
In a normal year mosquito season in Dent County, MO starts around April 3 and ends around October 30, about 30 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Dent County, and when
- Start tipping out standing water weekly by March 20.
- Book any yard treatment for early April, ahead of the July peak.
- Repellent can go away after October 30.
- No West Nile cases since 2016, so bites in Dent County are a nuisance; check window screens.
Dent County against the rest of MO
Dent County has the 63rd longest season of 115 MO counties, at 210 days against 242 in Pemiscot County and 187 in Crawford County. Its mean temperature is 55.2°F.
- Stone County: April 4 to November 1 (211 days, 2 WNV)
- Audrain County: April 3 to October 30 (210 days, 1 WNV)
- Lawrence County: April 3 to October 30 (210 days, 0 WNV)
- Randolph County: April 3 to October 30 (210 days, 1 WNV)
West Nile in Dent County
From 1999 to 2025, CDC ArboNET counted 1 human West Nile case in Dent County (1 neuroinvasive) across 1 year. The worst was 2013 with 1; the latest was 2013.
More: how the dates are worked out · when the season starts across the US.