Mosquito season in Manassas Park city, VA: when it starts and ends
Mosquito months in Manassas Park city
In a normal year mosquito season in Manassas Park city, VA starts around April 3 and ends around November 3, about 31 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Manassas Park city, and when
- Start tipping out standing water weekly by March 20.
- Book any yard treatment for early April, ahead of the July peak.
- Repellent can go away after November 3.
- No West Nile cases since 2016, so bites in Manassas Park city are a nuisance; check window screens.
Manassas Park city against the rest of VA
Manassas Park city has the 77th longest season of 133 VA counties, at 214 days against 257 in Norfolk city and 172 in Highland County. Its mean temperature is 55.4°F.
- Prince William County: April 3 to November 3 (214 days, 7 WNV)
- Manassas city: April 3 to November 3 (214 days, 0 WNV)
- Patrick County: April 5 to November 4 (213 days, 0 WNV)
- Madison County: April 3 to November 1 (212 days, 0 WNV)
West Nile in Manassas Park city
From 1999 to 2025, CDC ArboNET counted 1 human West Nile case in Manassas Park city (1 neuroinvasive) across 1 year. The worst was 2009 with 1; the latest was 2009.
Background: when mosquitoes go away for the winter; how the dates are worked out.