Las Vegas, NV 89135 Frost Dates
89135, near Las Vegas, NV: the frost window
Around 03/13 is the usual last spring frost, about 197 days away. Fall's first freeze usually shows up around 11/15, roughly 244 days after the last spring frost.
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.
Stretching the season past the first frost
Las Vegas's growing season runs out in roughly 11 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
How much risk comes with planting early here
03/13 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 02/20 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/11 and only about 1 year in 10 sees frost after that.
Las Vegas against the rest of the dataset
About 244 days separate Las Vegas's last and first frost, putting it 8,092 of 40,283 ZIP codes nationally. Within NV, it ranks 108 of 222.
Learn more
Two guides worth reading on 89135: local microclimates, on what one yard in Las Vegas can differ from the 89135 normal, and zone vs. frost date, on why Zone 9a and Las Vegas's frost date answer different questions.