Mosquito season in Houghton County, MI: when it starts and ends
Mosquito months in Houghton County
In a normal year mosquito season in Houghton County, MI starts around May 17 and ends around September 30, about 20 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Houghton County, and when
- Start tipping out standing water weekly by May 3.
- Book any yard treatment for mid May, ahead of the July peak.
- Repellent can go away after September 30.
- No West Nile cases since 2016, so bites in Houghton County are a nuisance; check window screens.
Houghton County against the rest of MI
Houghton County has the 82nd longest season of 83 MI counties, at 137 days against 189 in Allegan County and 124 in Iron County. Its mean temperature is 40.5°F.
- Alger County: May 18 to October 4 (139 days, 0 WNV)
- Baraga County: May 14 to September 29 (138 days, 0 WNV)
- Iron County: May 24 to September 25 (124 days, 0 WNV)
West Nile in Houghton County
CDC ArboNET lists no human West Nile cases for Houghton County from 1999 to 2025, though virus turned up in birds, mosquitoes or horses in 8 of those years.
See how the dates are worked out, and when mosquitoes go away for the winter.