Weather is probably a major factor when you plan your trip to Ishpeming, but bear in mind that cheaper options are usually available when the weather isn't as good. The hottest months are usually July and August, with an average temperature of 17°C, while the coldest months are February and January, with an average of -6°C. The snowiest months in Ishpeming are January, May, February and April, with each month seeing an average of 75 cm of snowfall.