Mosquito season in Newton County, MO: when it starts and ends
Mosquito months in Newton County
In a normal year mosquito season in Newton County, MO starts around March 27 and ends around November 8, about 32 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Newton County, and when
- Start tipping out standing water weekly by March 13.
- Book any yard treatment for late March, ahead of the July peak.
- Repellent can go away after November 8.
- No West Nile cases since 2016, so bites in Newton County are a nuisance; check window screens.
Newton County against the rest of MO
Newton County has the 12th longest season of 115 MO counties, at 226 days against 242 in Pemiscot County and 187 in Crawford County. Its mean temperature is 57.9°F.
- Camden County: March 26 to November 6 (226 days, 0 WNV)
- Cedar County: March 27 to November 8 (226 days, 0 WNV)
- Miller County: March 26 to November 6 (225 days, 0 WNV)
- St. Louis County: March 26 to November 6 (225 days, 41 WNV)
West Nile in Newton County
From 1999 to 2025, CDC ArboNET counted 1 human West Nile case in Newton County (1 neuroinvasive) across 1 year. The worst was 2002 with 1; the latest was 2002.
Background: when the season starts across the US; how the dates are worked out.