Crested Butte, CO 81224 Frost Dates
Frost dates for Crested Butte, CO, ZIP 81224
The NOAA station nearest to 81224 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).
How Crested Butte compares
About 47 days separate Crested Butte's last and first frost, putting it 40,229 of 40,283 ZIP codes nationally. Within CO, it ranks 605 of 624.
Learn more
the methodology explains exactly which NOAA and USDA figures feed 81224's numbers, and zone vs. frost date explains why Zone 5a and Crested Butte's frost date answer different questions.