Mosquito season in Pike County, OH: when it starts and ends
Mosquito months in Pike County
In a normal year mosquito season in Pike County, OH starts around April 9 and ends around October 28, about 29 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Pike County, and when
- Start tipping out standing water weekly by March 26.
- Book any yard treatment for early April, ahead of the July peak.
- Repellent can go away after October 28.
- No West Nile cases since 2016, so bites in Pike County are a nuisance; check window screens.
Pike County against the rest of OH
Pike County has the 15th longest season of 88 OH counties, at 202 days against 209 in Gallia County and 177 in Ashtabula County. Its mean temperature is 53.5°F.
- Franklin County: April 8 to October 27 (202 days, 18 WNV)
- Delaware County: April 9 to October 28 (202 days, 0 WNV)
- Clermont County: April 11 to October 27 (199 days, 6 WNV)
- Hancock County: April 12 to October 27 (199 days, 4 WNV)
West Nile in Pike County
CDC ArboNET lists no human West Nile cases for Pike County from 1999 to 2025, though virus turned up in birds, mosquitoes or horses in 4 of those years.
Background: when mosquitoes go away for the winter; how the dates are worked out.