Walden, CO 80480 Frost Dates
80480, near Walden, CO: the frost window
The NOAA station nearest to 80480 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 4b (-25 to -20°F average annual minimum).
Walden against the rest of the dataset
About 31 days separate Walden's last and first frost, putting it 40,268 of 40,283 ZIP codes nationally. Within CO, it ranks 624 of 624.
Learn more
Two guides worth reading on 80480: local microclimates, on what one yard in Walden can differ from the 80480 normal, and the methodology, on exactly which NOAA and USDA figures feed 80480's numbers.