Pueblo, CO 81011 Frost Dates
When can you plant in Pueblo, CO?
Typically, the last spring freeze lands around 04/30, roughly 245 days out. The first fall frost typically arrives around 10/09, about 161 frost-free days later.
Pueblo sits in USDA Zone 6a (-10 to -5°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 6 weeks of growing season left in Pueblo before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
The actual range around Pueblo's last frost
04/30 is the middle of 30 years of NOAA records, not a promise. Plant by 04/18 and you're betting against frost in roughly 9 years out of 10. 05/12 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Pueblo compares
At roughly 161 frost-free days, Pueblo places 31,932 of 40,283 ZIP codes in this dataset. Within CO, it ranks 80 of 624.
Learn more
local microclimates covers what one yard in Pueblo can differ from the 81011 normal. zone vs. frost date covers why Zone 6a and Pueblo's frost date answer different questions.