Mosquito season in Cumberland County, NJ: when it starts and ends
Mosquito months in Cumberland County
In a normal year mosquito season in Cumberland County, NJ starts around April 10 and ends around November 2, about 29 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Cumberland County, and when
- Start tipping out standing water weekly by March 27.
- Book any yard treatment for early April, ahead of the July peak.
- Repellent can go away after November 2.
- 5 West Nile cases since 2016 (last 2024): you should use repellent at dusk June to August, more so if over 60.
Cumberland County against the rest of NJ
Cumberland County has the 9th longest season of 21 NJ counties, at 206 days against 217 in Cape May County and 184 in Sussex County. Its mean temperature is 54.5°F.
- Union County: April 7 to November 3 (210 days, 10 WNV)
- Bergen County: April 9 to November 2 (208 days, 31 WNV)
- Middlesex County: April 10 to November 1 (205 days, 20 WNV)
- Monmouth County: April 11 to November 2 (205 days, 25 WNV)
West Nile in Cumberland County
From 1999 to 2025, CDC ArboNET counted 13 human West Nile cases in Cumberland County (8 neuroinvasive) across 7 years. The worst was 2015 with 5; the latest was 2024.
More: how the dates are worked out · reading the West Nile counts.