Mosquito season in Livingston County, MO: when it starts and ends
Mosquito months in Livingston County
In a normal year mosquito season in Livingston County, MO starts around April 8 and ends around October 26, about 29 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Livingston County, and when
- Start tipping out standing water weekly by March 25.
- Book any yard treatment for early April, ahead of the July peak.
- Repellent can go away after October 26.
- 1 West Nile case since 2016 (last 2025): you should use repellent at dusk June to August, more so if over 60.
Livingston County against the rest of MO
Livingston County has the 88th longest season of 115 MO counties, at 201 days against 242 in Pemiscot County and 187 in Crawford County. Its mean temperature is 52.7°F.
- Linn County: April 7 to October 25 (201 days, 0 WNV)
- Andrew County: April 8 to October 26 (201 days, 0 WNV)
- Ray County: April 8 to October 26 (201 days, 0 WNV)
- Holt County: April 8 to October 25 (200 days, 0 WNV)
West Nile in Livingston County
From 1999 to 2025, CDC ArboNET counted 2 human West Nile cases in Livingston County (1 neuroinvasive) across 2 years. The worst was 2025 with 1; the latest was 2025.
More: how the dates are worked out · when the season starts across the US.