Mosquito season in Montgomery County, NY: when it starts and ends
Mosquito months in Montgomery County
In a normal year mosquito season in Montgomery County, NY starts around April 27 and ends around October 13, about 24 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Montgomery County, and when
- Start tipping out standing water weekly by April 13.
- Book any yard treatment for late April, ahead of the July peak.
- Repellent can go away after October 13.
- No West Nile cases since 2016, so bites in Montgomery County are a nuisance; check window screens.
Montgomery County against the rest of NY
Montgomery County has the 29th longest season of 62 NY counties, at 169 days against 218 in New York County and 125 in Franklin County. Its mean temperature is 46.8°F.
- Chemung County: April 27 to October 14 (170 days, 1 WNV)
- Schenectady County: April 26 to October 12 (169 days, 3 WNV)
- Broome County: April 28 to October 14 (169 days, 3 WNV)
- Oneida County: April 28 to October 14 (169 days, 1 WNV)
West Nile in Montgomery County
CDC ArboNET lists no human West Nile cases for Montgomery County from 1999 to 2025, though virus turned up in birds, mosquitoes or horses in 7 of those years.
See how the dates are worked out, and when mosquitoes go away for the winter.