Las Vegas, NV 89145 Frost Dates
When can you plant in Las Vegas, NV?
Typically, the last spring freeze lands around 01/24, roughly 149 days out. The first fall frost typically arrives around 12/10, about 323 frost-free days later.
The USDA Plant Hardiness Zone Map puts Las Vegas in Zone 9a (20 to 25°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 15 weeks of growing season left in Las Vegas before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
The actual range around Las Vegas's last frost
01/24 is the middle of 30 years of NOAA records, not a promise. Plant by 02/19 and you're betting against frost in roughly 9 years out of 10. 12/27 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Las Vegas compares
At roughly 323 frost-free days, Las Vegas places 3,249 of 40,283 ZIP codes in this dataset. Within NV, it ranks 63 of 222.
Learn more
local microclimates covers what one yard in Las Vegas can differ from the 89145 normal. zone vs. frost date covers why Zone 9a and Las Vegas's frost date answer different questions.