Mosquito season in Van Buren County, IA: when it starts and ends
Mosquito months in Van Buren County
In a normal year mosquito season in Van Buren County, IA starts around April 14 and ends around October 22, about 27 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Van Buren County, and when
- Start tipping out standing water weekly by March 31.
- Book any yard treatment for mid April, ahead of the July peak.
- Repellent can go away after October 22.
- 1 West Nile case since 2016 (last 2018): you should use repellent at dusk June to August, more so if over 60.
Van Buren County against the rest of IA
Van Buren County has the 9th longest season of 99 IA counties, at 191 days against 198 in Des Moines County and 160 in Worth County. Its mean temperature is 50.6°F.
- Mills County: April 13 to October 21 (191 days, 3 WNV)
- Muscatine County: April 14 to October 22 (191 days, 0 WNV)
- Page County: April 14 to October 21 (190 days, 2 WNV)
- Scott County: April 14 to October 21 (190 days, 3 WNV)
West Nile in Van Buren County
From 1999 to 2025, CDC ArboNET counted 2 human West Nile cases in Van Buren County (1 neuroinvasive) across 2 years. The worst was 2018 with 1; the latest was 2018.
Background: when mosquitoes go away for the winter; how the dates are worked out.