Las Vegas, NV 89143 Frost Dates
Frost dates for Las Vegas, NV, ZIP 89143
The last spring frost here typically falls around 01/24, about 149 days from today. 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
Zone 9a around Las Vegas has about 15 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.
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 3,247 of 40,283 ZIP codes in this dataset. Within NV, it ranks 61 of 222.
Learn more
local microclimates explains what one yard in Las Vegas can differ from the 89143 normal, and zone vs. frost date explains why Zone 9a and Las Vegas's frost date answer different questions.