Mosquito season in Berkeley County, WV: when it starts and ends
Mosquito months in Berkeley County
In a normal year mosquito season in Berkeley County, WV 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 Berkeley County, 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.
- 3 West Nile cases since 2016 (last 2024): you should use repellent at dusk June to August, more so if over 60.
Berkeley County against the rest of WV
Berkeley County has the 11th longest season of 55 WV counties, at 207 days against 224 in Cabell County and 162 in Randolph County. Its mean temperature is 54°F.
- Summers County: April 3 to October 30 (210 days, 0 WNV)
- Wyoming County: April 4 to October 29 (208 days, 1 WNV)
- Clay County: April 6 to October 29 (206 days, 0 WNV)
- Jefferson County: April 7 to October 29 (206 days, 1 WNV)
West Nile in Berkeley County
From 1999 to 2025, CDC ArboNET counted 6 human West Nile cases in Berkeley County (5 neuroinvasive) across 5 years. The worst was 2024 with 2; the latest was 2024.
More: how the dates are worked out · when mosquitoes go away for the winter.