Laramie, WY 82061 Frost Dates
Frost dates for Laramie, WY, ZIP 82061
The last spring frost here typically falls around 05/27, about 272 days from today. The first fall frost typically arrives around 09/19, about 115 frost-free days later.
The USDA Plant Hardiness Zone Map puts Laramie 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
Zone 5b around Laramie has about 3 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.
Why 05/27 isn't a guarantee
05/27 is the middle of 30 years of NOAA records, not a promise. Plant by 05/12 and you're betting against frost in roughly 9 years out of 10. 06/13 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Laramie compares
Laramie's growing season runs about 115 days, ranking 39,300 of 40,283 US ZIP codes measured here, longest to shortest. Within WY, it ranks 116 of 192.
Learn more
zone vs. frost date explains why Zone 5b and Laramie's frost date answer different questions, and the frost range explains how to read the range around Laramie's dates instead of trusting one.