Mosquito season in Belmont County, OH: when it starts and ends
Mosquito months in Belmont County
In a normal year mosquito season in Belmont County, OH starts around April 16 and ends around October 25, about 27 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Belmont County, and when
- Start tipping out standing water weekly by April 2.
- Book any yard treatment for mid April, ahead of the July peak.
- Repellent can go away after October 25.
- 1 West Nile case since 2016 (last 2018): you should use repellent at dusk July to August, more so if over 60.
Belmont County against the rest of OH
Belmont County has the 45th longest season of 88 OH counties, at 192 days against 209 in Gallia County and 177 in Ashtabula County. Its mean temperature is 51.4°F.
- Coshocton County: April 15 to October 24 (192 days, 0 WNV)
- Fairfield County: April 15 to October 24 (192 days, 0 WNV)
- Lucas County: April 16 to October 25 (192 days, 11 WNV)
- Van Wert County: April 16 to October 24 (192 days, 1 WNV)
West Nile in Belmont County
From 1999 to 2025, CDC ArboNET counted 1 human West Nile case in Belmont County (1 neuroinvasive) across 1 year. The worst was 2018 with 1; the latest was 2018.
More: how the dates are worked out · when mosquitoes go away for the winter.