Las Vegas, NV 89129 Frost Dates
Frost dates for Las Vegas, NV, ZIP 89129
Around 01/24 is the usual last spring frost, about 149 days away. The first fall frost typically arrives around 12/10, about 323 frost-free days later.
Zone 9a (20 to 25°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 Las Vegas, not a forecast for this year.
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.
Why 01/24 isn't a guarantee
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
About 323 days separate Las Vegas's last and first frost, putting it 3,243 of 40,283 ZIP codes nationally. Within NV, it ranks 57 of 222.
Learn more
local microclimates explains what one yard in Las Vegas can differ from the 89129 normal, and zone vs. frost date explains why Zone 9a and Las Vegas's frost date answer different questions.