Las Vegas, NV 89124 Frost Dates
Las Vegas, NV: when does the frost end?
Typically, the last spring freeze lands around 03/13, roughly 197 days out. Fall's first freeze usually shows up around 11/15, roughly 244 days after the last spring frost.
Zone 8b (15 to 20°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.
Stretching the season past the first frost
With roughly 11 weeks until Las Vegas's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 03/13 isn't a guarantee
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
At roughly 244 frost-free days, Las Vegas places 8,091 of 40,283 ZIP codes in this dataset. Within NV, it ranks 107 of 222.
Learn more
Before leaning on 89124's figures: the frost range explains how to read the range around Las Vegas's dates instead of trusting one, while local microclimates explains what one yard in Las Vegas can differ from the 89124 normal.