Romeo, CO 81148 Frost Dates
When can you plant in Romeo, CO?
Around 05/28 is the usual last spring frost, about 273 days away. The first fall frost typically arrives around 09/21, about 115 frost-free days later.
The USDA Plant Hardiness Zone Map puts Romeo in Zone 5a (-20 to -15°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 3 weeks of growing season left in Romeo before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
Why 05/28 isn't a guarantee
05/28 is the middle of 30 years of NOAA records, not a promise. Plant by 05/13 and you're betting against frost in roughly 9 years out of 10. 06/11 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Romeo compares
About 115 days separate Romeo's last and first frost, putting it 39,336 of 40,283 ZIP codes nationally. Within CO, it ranks 488 of 624.
Learn more
zone vs. frost date covers why Zone 5a and Romeo's frost date answer different questions. the frost range covers how to read the range around Romeo's dates instead of trusting one.