Trinidad, CO 81059 Frost Dates
When can you plant in Trinidad, CO?
The last spring frost here typically falls around 05/04, about 249 days from today. The first fall frost typically arrives around 10/09, about 156 frost-free days later.
The USDA Plant Hardiness Zone Map puts Trinidad in Zone 6a (-10 to -5°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
What to do before the first frost
About 6 weeks of growing season left in Trinidad before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
Why 05/04 isn't a guarantee
05/04 is the middle of 30 years of NOAA records, not a promise. Plant by 04/20 and you're betting against frost in roughly 9 years out of 10. 05/19 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Trinidad compares
About 156 days separate Trinidad's last and first frost, putting it 33,557 of 40,283 ZIP codes nationally. Within CO, it ranks 196 of 624.
Learn more
zone vs. frost date covers why Zone 6a and Trinidad's frost date answer different questions. the frost range covers how to read the range around Trinidad's dates instead of trusting one.