Mosquito season in Benewah County, ID: when it starts and ends
Mosquito months in Benewah County
In a normal year mosquito season in Benewah County, ID starts around May 3 and ends around October 7, about 22 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Benewah County, and when
- Start tipping out standing water weekly by April 19.
- Book any yard treatment for early May, ahead of the August peak.
- Repellent can go away after October 7.
- No West Nile cases since 2016, so bites in Benewah County are a nuisance; check window screens.
Benewah County against the rest of ID
Benewah County has the 16th longest season of 44 ID counties, at 157 days against 194 in Canyon County and 85 in Fremont County. Its mean temperature is 47°F.
- Cassia County: May 3 to October 11 (161 days, 1 WNV)
- Kootenai County: May 1 to October 8 (160 days, 2 WNV)
- Boundary County: April 30 to October 1 (154 days, 0 WNV)
- Latah County: May 4 to October 5 (154 days, 0 WNV)
West Nile in Benewah County
CDC ArboNET lists no human West Nile cases for Benewah County from 1999 to 2025, though virus turned up in birds, mosquitoes or horses in 1 of those years.
More: how the dates are worked out · when the season starts across the US.