Laramie, WY 82073 Frost Dates
Laramie, WY: when does the frost end?
Around 06/07 is the usual last spring frost, about 283 days away. Fall's first freeze usually shows up around 09/04, roughly 88 days after the last spring frost.
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.
Stretching the season past the first frost
With roughly 1 week until Laramie's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around Laramie's last frost
06/07 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 05/23 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 06/29 and only about 1 year in 10 sees frost after that.
Laramie against the rest of the dataset
Laramie's growing season runs about 88 days, ranking 39,940 of 40,283 US ZIP codes measured here, longest to shortest. Within WY, it ranks 147 of 192.
Learn more
Before leaning on 82073's figures: local microclimates explains what one yard in Laramie can differ from the 82073 normal, while zone vs. frost date explains why Zone 5b and Laramie's frost date answer different questions.