Mosquito season in Wyandot County, OH: when it starts and ends
Mosquito months in Wyandot County
In a normal year mosquito season in Wyandot County, OH starts around April 18 and ends around October 22, about 27 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Wyandot 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 22.
- 2 West Nile cases since 2016 (last 2024): you should use repellent at dusk July to August, more so if over 60.
Wyandot County against the rest of OH
Wyandot County has the 67th longest season of 88 OH counties, at 187 days against 209 in Gallia County and 177 in Ashtabula County. Its mean temperature is 50.1°F.
- Licking County: April 19 to October 24 (188 days, 1 WNV)
- Defiance County: April 17 to October 21 (187 days, 2 WNV)
- Huron County: April 19 to October 23 (187 days, 1 WNV)
- Perry County: April 19 to October 22 (186 days, 1 WNV)
West Nile in Wyandot County
From 1999 to 2025, CDC ArboNET counted 9 human West Nile cases in Wyandot County (6 neuroinvasive) across 6 years. The worst was 2006 with 3; the latest was 2024.
See how the dates are worked out, and when the season starts across the US.