Mosquito season in Juniata County, PA: when it starts and ends
Mosquito months in Juniata County
In a normal year mosquito season in Juniata County, PA starts around April 13 and ends around October 26, about 28 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Juniata County, and when
- Start tipping out standing water weekly by March 30.
- Book any yard treatment for mid April, ahead of the July peak.
- Repellent can go away after October 26.
- No West Nile cases since 2016, so bites in Juniata County are a nuisance; check window screens.
Juniata County against the rest of PA
Juniata County has the 16th longest season of 67 PA counties, at 196 days against 222 in Philadelphia County and 154 in Clinton County. Its mean temperature is 51.9°F.
- Washington County: April 12 to October 25 (196 days, 3 WNV)
- Cumberland County: April 13 to October 26 (196 days, 8 WNV)
- Northampton County: April 13 to October 26 (196 days, 4 WNV)
- Lehigh County: April 13 to October 25 (195 days, 13 WNV)
West Nile in Juniata County
From 1999 to 2025, CDC ArboNET counted 2 human West Nile cases in Juniata County (2 neuroinvasive) across 1 year. The worst was 2012 with 2; the latest was 2012.
See how the dates are worked out, and when the season starts across the US.