Monument, CO 80908 Frost Dates
When can you plant in Monument, CO?
The last spring frost here typically falls around 05/09, about 254 days from today. The first fall frost typically arrives around 10/06, about 150 frost-free days later.
The USDA Plant Hardiness Zone Map puts Monument in Zone 5b (-15 to -10°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 Monument before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
The actual range around Monument's last frost
05/09 is the middle of 30 years of NOAA records, not a promise. Plant by 04/28 and you're betting against frost in roughly 9 years out of 10. 05/20 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Monument compares
At roughly 150 frost-free days, Monument places 35,255 of 40,283 ZIP codes in this dataset. Within CO, it ranks 333 of 624.
Learn more
local microclimates covers what one yard in Monument can differ from the 80908 normal. zone vs. frost date covers why Zone 5b and Monument's frost date answer different questions.