Mosquito season in Cameron County, PA: when it starts and ends
Mosquito months in Cameron County
In a normal year mosquito season in Cameron County, PA starts around April 27 and ends around October 14, about 24 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Cameron 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 14.
- No West Nile cases since 2016, so bites in Cameron County are a nuisance; check window screens.
Cameron County against the rest of PA
Cameron County has the 50th longest season of 67 PA counties, at 170 days against 222 in Philadelphia County and 154 in Clinton County. Its mean temperature is 47.3°F.
- Jefferson County: April 25 to October 14 (173 days, 0 WNV)
- Carbon County: April 25 to October 14 (172 days, 1 WNV)
- Clarion County: April 29 to October 14 (168 days, 0 WNV)
- Pike County: April 29 to October 14 (168 days, 0 WNV)
West Nile in Cameron County
From 1999 to 2025, CDC ArboNET counted 1 human West Nile case in Cameron County (1 neuroinvasive) across 1 year. The worst was 2003 with 1; the latest was 2003.
See how the dates are worked out, and when mosquitoes go away for the winter.