Springfield, CO 81073 Frost Dates
When can you plant in Springfield, CO?
Around 05/03 is the usual last spring frost, about 248 days away. The first fall frost typically arrives around 10/10, about 158 frost-free days later.
The USDA Plant Hardiness Zone Map puts Springfield in Zone 6b (-5 to 0°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 Springfield before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
The actual range around Springfield's last frost
05/03 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. 05/17 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Springfield compares
At roughly 158 frost-free days, Springfield places 33,039 of 40,283 ZIP codes in this dataset. Within CO, it ranks 169 of 624.
Learn more
local microclimates covers what one yard in Springfield can differ from the 81073 normal. zone vs. frost date covers why Zone 6b and Springfield's frost date answer different questions.