Moffat, CO 81143 Frost Dates
When can you plant in Moffat, CO?
Around 05/26 is the usual last spring frost, about 271 days away. The first fall frost typically arrives around 09/26, about 120 frost-free days later.
Moffat sits in USDA Zone 5b (-15 to -10°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 4 weeks of growing season left in Moffat before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
The actual range around Moffat's last frost
05/26 is the middle of 30 years of NOAA records, not a promise. Plant by 05/14 and you're betting against frost in roughly 9 years out of 10. 06/09 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Moffat compares
About 120 days separate Moffat's last and first frost, putting it 39,113 of 40,283 ZIP codes nationally. Within CO, it ranks 465 of 624.
Learn more
zone vs. frost date covers why Zone 5b and Moffat's frost date answer different questions. the frost range covers how to read the range around Moffat's dates instead of trusting one.