Alpine, WY 83128 Frost Dates
83128, near Alpine, WY: the frost window
The NOAA station nearest to 83128 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 5b (-15 to -10°F average annual minimum).
Alpine against the rest of the dataset
Alpine's growing season runs about 67 days, ranking 40,144 of 40,283 US ZIP codes measured here, longest to shortest. Within WY, it ranks 179 of 192.
Learn more
Two guides worth reading on 83128: zone vs. frost date, on why Zone 5b and Alpine's frost date answer different questions, and local microclimates, on what one yard in Alpine can differ from the 83128 normal.