Mosquito season in Northampton County, VA: when it starts and ends
Mosquito months in Northampton County
In a normal year mosquito season in Northampton County, VA starts around March 26 and ends around November 19, about 34 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Northampton County, and when
- Start tipping out standing water weekly by March 12.
- Book any yard treatment for late March, ahead of the July peak.
- Repellent can go away after November 19.
- No West Nile cases since 2016, so bites in Northampton County are a nuisance; check window screens.
Northampton County against the rest of VA
Northampton County has the 20th longest season of 133 VA counties, at 238 days against 257 in Norfolk city and 172 in Highland County. Its mean temperature is 58.5°F.
- Colonial Heights city: March 20 to November 14 (238 days, 0 WNV)
- Chesterfield County: March 22 to November 15 (238 days, 1 WNV)
- Accomack County: March 25 to November 17 (237 days, 0 WNV)
- Henrico County: March 22 to November 13 (236 days, 6 WNV)
West Nile in Northampton County
CDC ArboNET lists no human West Nile cases for Northampton County from 1999 to 2025, though virus turned up in birds, mosquitoes or horses in 1 of those years.
Background: when the season starts across the US; how the dates are worked out.