Mosquito season in Hampshire County, WV: when it starts and ends
Mosquito months in Hampshire County
In a normal year mosquito season in Hampshire County, WV starts around April 12 and ends around October 25, about 28 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Hampshire County, and when
- Start tipping out standing water weekly by March 29.
- Book any yard treatment for mid April, ahead of the July peak.
- Repellent can go away after October 25.
- 1 West Nile case since 2016 (last 2025): you should use repellent at dusk July to August, more so if over 60.
Hampshire County against the rest of WV
Hampshire County has the 27th longest season of 55 WV counties, at 196 days against 224 in Cabell County and 162 in Randolph County. Its mean temperature is 52.2°F.
- McDowell County: April 10 to October 26 (199 days, 0 WNV)
- Brooke County: April 12 to October 26 (197 days, 0 WNV)
- Taylor County: April 12 to October 25 (196 days, 0 WNV)
- Lewis County: April 15 to October 28 (196 days, 0 WNV)
West Nile in Hampshire County
From 1999 to 2025, CDC ArboNET counted 1 human West Nile case in Hampshire County (1 neuroinvasive) across 1 year. The worst was 2025 with 1; the latest was 2025.
See how the dates are worked out, and when mosquitoes go away for the winter.