Mosquito season in Patrick County, VA: when it starts and ends
Mosquito months in Patrick County
In a normal year mosquito season in Patrick County, VA starts around April 5 and ends around November 4, about 30 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Patrick County, and when
- Start tipping out standing water weekly by March 22.
- Book any yard treatment for early April, ahead of the July peak.
- Repellent can go away after November 4.
- No West Nile cases since 2016, so bites in Patrick County are a nuisance; check window screens.
Patrick County against the rest of VA
Patrick County has the 78th longest season of 133 VA counties, at 213 days against 257 in Norfolk city and 172 in Highland County. Its mean temperature is 55.9°F.
- Manassas city: April 3 to November 3 (214 days, 0 WNV)
- Manassas Park city: April 3 to November 3 (214 days, 0 WNV)
- Madison County: April 3 to November 1 (212 days, 0 WNV)
- Scott County: April 4 to November 1 (211 days, 0 WNV)
West Nile in Patrick County
CDC ArboNET lists no human West Nile cases for Patrick County from 1999 to 2025, though virus turned up in birds, mosquitoes or horses in 2 of those years.
More: how the dates are worked out · when the season starts across the US.