Mosquito season in Queen Anne's County, MD: when it starts and ends
Mosquito months in Queen Anne's County
In a normal year mosquito season in Queen Anne's County, MD starts around April 1 and ends around November 8, about 32 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Queen Anne's County, and when
- Start tipping out standing water weekly by March 18.
- Book any yard treatment for early April, ahead of the July peak.
- Repellent can go away after November 8.
- No West Nile cases since 2016, so bites in Queen Anne's County are a nuisance; check window screens.
Queen Anne's County against the rest of MD
Queen Anne's County has the 12th longest season of 24 MD counties, at 221 days against 235 in Wicomico County and 175 in Garrett County. Its mean temperature is 56.7°F.
- Howard County: March 30 to November 8 (223 days, 1 WNV)
- Caroline County: April 1 to November 9 (222 days, 0 WNV)
- Frederick County: March 30 to November 5 (220 days, 13 WNV)
- Montgomery County: March 30 to November 5 (220 days, 34 WNV)
West Nile in Queen Anne's County
From 1999 to 2025, CDC ArboNET counted 7 human West Nile cases in Queen Anne's County (3 neuroinvasive) across 3 years. The worst was 2003 with 5; the latest was 2012.
More: how the dates are worked out · when mosquitoes go away for the winter.