Mosquito season in Crawford County, OH: when it starts and ends
Mosquito months in Crawford County
In a normal year mosquito season in Crawford County, OH starts around April 13 and ends around October 26, about 28 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Crawford County, and when
- Start tipping out standing water weekly by March 30.
- Book any yard treatment for mid April, ahead of the July peak.
- Repellent can go away after October 26.
- No West Nile cases since 2016, so bites in Crawford County are a nuisance; check window screens.
Crawford County against the rest of OH
Crawford County has the 25th longest season of 88 OH counties, at 197 days against 209 in Gallia County and 177 in Ashtabula County. Its mean temperature is 52°F.
- Muskingum County: April 13 to October 28 (198 days, 0 WNV)
- Fayette County: April 11 to October 25 (197 days, 0 WNV)
- Cuyahoga County: April 17 to October 31 (197 days, 35 WNV)
- Lake County: April 18 to November 1 (197 days, 5 WNV)
West Nile in Crawford County
CDC ArboNET lists no human West Nile cases for Crawford County from 1999 to 2025, though virus turned up in birds, mosquitoes or horses in 8 of those years.
Background: when the season starts across the US; how the dates are worked out.