Mosquito season in Ashland County, OH: when it starts and ends
Mosquito months in Ashland County
In a normal year mosquito season in Ashland County, OH starts around April 18 and ends around October 21, about 26 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Ashland 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 21.
- No West Nile cases since 2016, so bites in Ashland County are a nuisance; check window screens.
Ashland County against the rest of OH
Ashland County has the 71st longest season of 88 OH counties, at 185 days against 209 in Gallia County and 177 in Ashtabula County. Its mean temperature is 49.9°F.
- Perry County: April 19 to October 22 (186 days, 1 WNV)
- Tuscarawas County: April 21 to October 24 (186 days, 1 WNV)
- Morrow County: April 18 to October 20 (185 days, 0 WNV)
- Wayne County: April 18 to October 20 (185 days, 4 WNV)
West Nile in Ashland County
From 1999 to 2025, CDC ArboNET counted 1 human West Nile case in Ashland County (1 neuroinvasive) across 1 year. The worst was 2012 with 1; the latest was 2012.
More: how the dates are worked out · when mosquitoes go away for the winter.