Las Vegas, NV 89149 Frost Dates
When can you plant in Las Vegas, NV?
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.
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
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
Las Vegas's growing season runs about 323 days, ranking 3,251 of 40,283 US ZIP codes measured here, longest to shortest. Within NV, it ranks 65 of 222.
Learn more
local microclimates covers what one yard in Las Vegas can differ from the 89149 normal. zone vs. frost date covers why Zone 9a and Las Vegas's frost date answer different questions.