Mosquito season in Petersburg city, VA: when it starts and ends
Mosquito months in Petersburg city
In a normal year mosquito season in Petersburg city, VA starts around March 20 and ends around November 14, about 34 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Petersburg city, and when
- Start tipping out standing water weekly by March 6.
- Book any yard treatment for mid March, ahead of the July peak.
- Repellent can go away after November 14.
- 1 West Nile case since 2016 (last 2023): you should use repellent at dusk June to September, more so if over 60.
Petersburg city against the rest of VA
Petersburg city has the 17th longest season of 133 VA counties, at 239 days against 257 in Norfolk city and 172 in Highland County. Its mean temperature is 59°F.
- Emporia city: March 20 to November 17 (242 days, 0 WNV)
- York County: March 21 to November 17 (242 days, 0 WNV)
- Colonial Heights city: March 20 to November 14 (238 days, 0 WNV)
- Chesterfield County: March 22 to November 15 (238 days, 1 WNV)
West Nile in Petersburg city
From 1999 to 2025, CDC ArboNET counted 1 human West Nile case in Petersburg city (1 neuroinvasive) across 1 year. The worst was 2023 with 1; the latest was 2023.
More: how the dates are worked out · when the season starts across the US.