Walsenburg, CO 81089 Frost Dates
Frost dates for Walsenburg, CO, ZIP 81089
The last spring frost here typically falls around 05/06, about 251 days from today. The first fall frost typically arrives around 10/04, about 149 frost-free days later.
Zone 6a (-10 to -5°F average annual minimum) comes from the USDA Plant Hardiness Zone Map; the frost dates above are the 1991-2020 normal at the nearest reporting NOAA station for Walsenburg, not a forecast for this year.
What to do before the first frost
Zone 6a around Walsenburg has about 5 weeks left before the first fall frost — that's the usual window to get a cold frame up if you want to keep harvesting past it.
How much risk comes with planting early here
05/06 is the middle of 30 years of NOAA records, not a promise. Plant by 04/24 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 Walsenburg compares
About 149 days separate Walsenburg's last and first frost, putting it 35,521 of 40,283 ZIP codes nationally. Within CO, it ranks 335 of 624.
Learn more
local microclimates explains what one yard in Walsenburg can differ from the 81089 normal, and zone vs. frost date explains why Zone 6a and Walsenburg's frost date answer different questions.