Aspen, CO 81656 Frost Dates
81656, near Aspen, CO: the frost window
The NOAA station nearest to 81656 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).
Aspen against the rest of the dataset
At roughly 55 frost-free days, Aspen places 40,204 of 40,283 ZIP codes in this dataset. Within CO, it ranks 598 of 624.
Learn more
Two guides worth reading on 81656: local microclimates, on what one yard in Aspen can differ from the 81656 normal, and the methodology, on exactly which NOAA and USDA figures feed 81656's numbers.