Mosquito season in Perry County, OH: when it starts and ends
Mosquito months in Perry County
In a normal year mosquito season in Perry County, OH starts around April 19 and ends around October 22, about 27 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Perry County, and when
- Start tipping out standing water weekly by April 5.
- 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 2017): you should use repellent at dusk July to August, more so if over 60.
Perry County against the rest of OH
Perry County has the 69th longest season of 88 OH counties, at 186 days against 209 in Gallia County and 177 in Ashtabula County. Its mean temperature is 50.8°F.
- Wyandot County: April 18 to October 22 (187 days, 2 WNV)
- Huron County: April 19 to October 23 (187 days, 1 WNV)
- Tuscarawas County: April 21 to October 24 (186 days, 1 WNV)
- Ashland County: April 18 to October 21 (185 days, 0 WNV)
West Nile in Perry County
From 1999 to 2025, CDC ArboNET counted 1 human West Nile case in Perry County (0 neuroinvasive) across 1 year. The worst was 2017 with 1; the latest was 2017.
More: how the dates are worked out · when the season starts across the US.