Mosquito season in Roanoke city, VA: when it starts and ends
Mosquito months in Roanoke city
In a normal year mosquito season in Roanoke city, VA starts around March 24 and ends around November 8, about 33 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Roanoke city, and when
- Start tipping out standing water weekly by March 10.
- Book any yard treatment for late March, ahead of the July peak.
- Repellent can go away after November 8.
- 6 West Nile cases since 2016 (last 2025): you should use repellent at dusk June to August, more so if over 60.
Roanoke city against the rest of VA
Roanoke city has the 34th longest season of 133 VA counties, at 229 days against 257 in Norfolk city and 172 in Highland County. Its mean temperature is 57.2°F.
- Franklin city: March 25 to November 12 (232 days, 0 WNV)
- Amelia County: March 26 to November 12 (231 days, 0 WNV)
- Alexandria city: March 26 to November 10 (229 days, 8 WNV)
- King and Queen County: March 27 to November 11 (229 days, 0 WNV)
West Nile in Roanoke city
From 1999 to 2025, CDC ArboNET counted 10 human West Nile cases in Roanoke city (9 neuroinvasive) across 9 years. The worst was 2022 with 2; the latest was 2025.
More: how the dates are worked out · reading the West Nile counts.