Michigan remains under a blistering heat wave, prompting the National Weather Service to extend Heat Advisories and Extreme Heat Warnings. At the same time, Canadian wildfire smoke threatens air quality across much of the state, adding a new layer of concern for residents.

According to the centuries-old Farmer’s Almanac, some Michigan residents could experience their last frost in early June. The prediction, based on historical climate data, suggests an extended frost season for parts of the state.