Mosquito season in Wood County, OH: when it starts and ends
Mosquito months in Wood County
In a normal year mosquito season in Wood County, OH starts around April 18 and ends around October 24, about 27 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Wood County, and when
- Start tipping out standing water weekly by April 4.
- Book any yard treatment for mid April, ahead of the July peak.
- Repellent can go away after October 24.
- 1 West Nile case since 2016 (last 2021): you should use repellent at dusk June to August, more so if over 60.
Wood County against the rest of OH
Wood County has the 58th longest season of 88 OH counties, at 190 days against 209 in Gallia County and 177 in Ashtabula County. Its mean temperature is 50.8°F.
- Seneca County: April 17 to October 24 (190 days, 0 WNV)
- Lawrence County: April 18 to October 25 (190 days, 0 WNV)
- Jefferson County: April 18 to October 24 (189 days, 1 WNV)
- Sandusky County: April 18 to October 24 (189 days, 1 WNV)
West Nile in Wood County
From 1999 to 2025, CDC ArboNET counted 18 human West Nile cases in Wood County (12 neuroinvasive) across 9 years. The worst was 2002 with 6; the latest was 2021.
More: how the dates are worked out · when mosquitoes go away for the winter.