Mosquito season in Winchester city, VA: when it starts and ends
Mosquito months in Winchester city
In a normal year mosquito season in Winchester city, VA starts around April 6 and ends around October 30, about 30 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Winchester city, and when
- Start tipping out standing water weekly by March 23.
- Book any yard treatment for early April, ahead of the July peak.
- Repellent can go away after October 30.
- 4 West Nile cases since 2016 (last 2018): you should use repellent at dusk June to August, more so if over 60.
Winchester city against the rest of VA
Winchester city has the 92nd longest season of 133 VA counties, at 207 days against 257 in Norfolk city and 172 in Highland County. Its mean temperature is 54.1°F.
- Augusta County: April 6 to October 30 (207 days, 0 WNV)
- Staunton city: April 6 to October 30 (207 days, 0 WNV)
- Washington County: April 7 to October 30 (206 days, 0 WNV)
- Amherst County: April 9 to November 1 (206 days, 0 WNV)
West Nile in Winchester city
From 1999 to 2025, CDC ArboNET counted 5 human West Nile cases in Winchester city (4 neuroinvasive) across 4 years. The worst was 2018 with 2; the latest was 2018.
See how the dates are worked out, and reading the West Nile counts.