Walden, CO 80473 Frost Dates
Walden, CO: when does the frost end?
The NOAA station nearest to 80473 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
At roughly 31 frost-free days, Walden places 40,267 of 40,283 ZIP codes in this dataset. Within CO, it ranks 623 of 624.
Learn more
Before leaning on 80473's figures: zone vs. frost date explains why Zone 4b and Walden's frost date answer different questions, while local microclimates explains what one yard in Walden can differ from the 80473 normal.