Mosquito season in Ozark County, MO: when it starts and ends
Mosquito months in Ozark County
In a normal year mosquito season in Ozark County, MO starts around April 2 and ends around November 4, about 31 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Ozark 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 4.
- No West Nile cases since 2016, so bites in Ozark County are a nuisance; check window screens.
Ozark County against the rest of MO
Ozark County has the 38th longest season of 115 MO counties, at 216 days against 242 in Pemiscot County and 187 in Crawford County. Its mean temperature is 56.3°F.
- Iron County: March 31 to November 2 (216 days, 0 WNV)
- St. Charles County: March 31 to November 2 (216 days, 9 WNV)
- Barry County: April 3 to November 5 (216 days, 0 WNV)
- Dade County: March 31 to November 1 (215 days, 0 WNV)
West Nile in Ozark County
CDC ArboNET lists no human West Nile cases for Ozark County from 1999 to 2025, though virus turned up in birds, mosquitoes or horses in 2 of those years.
Background: when the season starts across the US; how the dates are worked out.