Mosquito season in Miller County, MO: when it starts and ends
Mosquito months in Miller County
In a normal year mosquito season in Miller County, MO starts around March 26 and ends around November 6, about 32 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Miller County, and when
- Start tipping out standing water weekly by March 12.
- Book any yard treatment for late March, ahead of the July peak.
- Repellent can go away after November 6.
- No West Nile cases since 2016, so bites in Miller County are a nuisance; check window screens.
Miller County against the rest of MO
Miller County has the 13th longest season of 115 MO counties, at 225 days against 242 in Pemiscot County and 187 in Crawford County. Its mean temperature is 56.6°F.
- Cedar County: March 27 to November 8 (226 days, 0 WNV)
- Newton County: March 27 to November 8 (226 days, 0 WNV)
- St. Louis County: March 26 to November 6 (225 days, 41 WNV)
- Stoddard County: March 27 to November 7 (225 days, 1 WNV)
West Nile in Miller County
From 1999 to 2025, CDC ArboNET counted 5 human West Nile cases in Miller County (3 neuroinvasive) across 3 years. The worst was 2007 with 2; the latest was 2015.
Background: when the season starts across the US; how the dates are worked out.