Bozeman, MT 59730 Frost Dates
59730, near Bozeman, MT: the frost window
The NOAA station nearest to 59730 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 5a (-20 to -15°F average annual minimum).
Bozeman against the rest of the dataset
At roughly 50 frost-free days, Bozeman places 40,216 of 40,283 ZIP codes in this dataset. Within MT, it ranks 382 of 392.
Learn more
Two guides worth reading on 59730: local microclimates, on what one yard in Bozeman can differ from the 59730 normal, and the methodology, on exactly which NOAA and USDA figures feed 59730's numbers.