FrostDateCheck

Nucla, CO 81422 Frost Dates

When can you plant in Nucla, CO?

Zone 6b

Around 04/26 is the usual last spring frost, about 241 days away. The first fall frost typically arrives around 10/18, about 174 frost-free days later.

Nucla sits in USDA Zone 6b (-5 to 0°F average annual minimum). The dates above are NOAA's 1991-2020 normal at the nearest reporting station, a 30-year average, not a forecast.

What to do before the first frost

About 7 weeks of growing season left in Nucla before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.

The actual range around Nucla's last frost

04/26 is the middle of 30 years of NOAA records, not a promise. Plant by 04/10 and you're betting against frost in roughly 9 years out of 10. 05/08 is the safer bet, historically only a 1-in-10 chance of frost that late.

How Nucla compares

At roughly 174 frost-free days, Nucla places 27,582 of 40,283 ZIP codes in this dataset. Within CO, it ranks 9 of 624.

Learn more

the frost range covers how to read the range around Nucla's dates instead of trusting one. local microclimates covers what one yard in Nucla can differ from the 81422 normal.