Mosquito season in Montgomery County, VA: when it starts and ends
Mosquito months in Montgomery County
In a normal year mosquito season in Montgomery County, VA starts around April 11 and ends around October 26, about 28 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Montgomery County, and when
- Start tipping out standing water weekly by March 28.
- Book any yard treatment for mid April, ahead of the July peak.
- Repellent can go away after October 26.
- No West Nile cases since 2016, so bites in Montgomery County are a nuisance; check window screens.
Montgomery County against the rest of VA
Montgomery County has the 117th longest season of 133 VA counties, at 198 days against 257 in Norfolk city and 172 in Highland County. Its mean temperature is 52.3°F.
- Giles County: April 11 to October 26 (198 days, 0 WNV)
- Grayson County: April 11 to October 26 (198 days, 0 WNV)
- Roanoke County: April 11 to October 26 (198 days, 1 WNV)
- Page County: April 13 to October 28 (198 days, 0 WNV)
West Nile in Montgomery County
From 1999 to 2025, CDC ArboNET counted 1 human West Nile case in Montgomery County (0 neuroinvasive) across 1 year. The worst was 2015 with 1; the latest was 2015.
More: how the dates are worked out · when mosquitoes go away for the winter.