Mosquito season in Oneida County, NY: when it starts and ends
Mosquito months in Oneida County
In a normal year mosquito season in Oneida County, NY starts around April 28 and ends around October 14, about 24 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Oneida County, and when
- Start tipping out standing water weekly by April 14.
- Book any yard treatment for late April, ahead of the July peak.
- Repellent can go away after October 14.
- 1 West Nile case since 2016 (last 2025): you should use repellent at dusk July to July, more so if over 60.
Oneida County against the rest of NY
Oneida County has the 31st longest season of 62 NY counties, at 169 days against 218 in New York County and 125 in Franklin County. Its mean temperature is 46.6°F.
- Montgomery County: April 27 to October 13 (169 days, 0 WNV)
- Broome County: April 28 to October 14 (169 days, 3 WNV)
- Erie County: April 30 to October 15 (169 days, 12 WNV)
- Albany County: April 27 to October 12 (168 days, 4 WNV)
West Nile in Oneida County
From 1999 to 2025, CDC ArboNET counted 1 human West Nile case in Oneida County (1 neuroinvasive) across 1 year. The worst was 2025 with 1; the latest was 2025.
See how the dates are worked out, and when the season starts across the US.