Ishpeming, MI 49814 Frost Dates
Frost dates for Ishpeming, MI, ZIP 49814
The NOAA station nearest to 49814 does not report a usable frost-date normal for either event, so no last-frost or first-frost figure is shown here. The USDA hardiness zone below is still real: Zone 4a (-30 to -25°F average annual minimum).
How Ishpeming compares
At roughly 96 frost-free days, Ishpeming places 39,793 of 40,283 ZIP codes in this dataset. Within MI, it ranks 1,141 of 1,153.
Learn more
the methodology explains exactly which NOAA and USDA figures feed 49814's numbers, and zone vs. frost date explains why Zone 4a and Ishpeming's frost date answer different questions.