Mosquito season in Luzerne County, PA: when it starts and ends
Mosquito months in Luzerne County
In a normal year mosquito season in Luzerne County, PA starts around April 22 and ends around October 17, about 25 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Luzerne County, and when
- Start tipping out standing water weekly by April 8.
- Book any yard treatment for late April, ahead of the July peak.
- Repellent can go away after October 17.
- 4 West Nile cases since 2016 (last 2024): you should use repellent at dusk July to July, more so if over 60.
Luzerne County against the rest of PA
Luzerne County has the 40th longest season of 67 PA counties, at 178 days against 222 in Philadelphia County and 154 in Clinton County. Its mean temperature is 48.6°F.
- Armstrong County: April 23 to October 20 (180 days, 0 WNV)
- Columbia County: April 22 to October 18 (179 days, 1 WNV)
- Venango County: April 23 to October 18 (178 days, 1 WNV)
- Crawford County: April 23 to October 18 (177 days, 0 WNV)
West Nile in Luzerne County
From 1999 to 2025, CDC ArboNET counted 10 human West Nile cases in Luzerne County (4 neuroinvasive) across 5 years. The worst was 2003 with 3; the latest was 2024.
More: how the dates are worked out · reading the West Nile counts.