Mosquito season in Greene County, NY: when it starts and ends
Mosquito months in Greene County
In a normal year mosquito season in Greene County, NY starts around May 7 and ends around October 6, about 22 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Greene County, and when
- Start tipping out standing water weekly by April 23.
- Book any yard treatment for early May, ahead of the July peak.
- Repellent can go away after October 6.
- 3 West Nile cases since 2016 (last 2022): you should use repellent at dusk July, more so if over 60.
Greene County against the rest of NY
Greene County has the 57th longest season of 62 NY counties, at 151 days against 218 in New York County and 125 in Franklin County. Its mean temperature is 43.9°F.
- Otsego County: May 6 to October 6 (154 days, 0 WNV)
- Allegany County: May 8 to October 9 (154 days, 0 WNV)
- Herkimer County: May 8 to October 4 (149 days, 0 WNV)
- Hamilton County: May 9 to October 3 (147 days, 0 WNV)
West Nile in Greene County
From 1999 to 2025, CDC ArboNET counted 5 human West Nile cases in Greene County (5 neuroinvasive) across 4 years. The worst was 2018 with 2; the latest was 2022.
See how the dates are worked out, and when the season starts across the US.