Henderson, NV 89178 Frost Dates
Henderson, NV: when does the frost end?
The last spring frost here typically falls around 03/17, about 201 days from today. Fall's first freeze usually shows up around 11/20, roughly 245 days after the last spring frost.
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 Henderson, not a forecast for this year.
Stretching the season past the first frost
With roughly 12 weeks until Henderson's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 03/17 isn't a guarantee
03/17 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 02/23 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.
Henderson against the rest of the dataset
At roughly 245 frost-free days, Henderson places 7,959 of 40,283 ZIP codes in this dataset. Within NV, it ranks 104 of 222.
Learn more
Before leaning on 89178's figures: local microclimates explains what one yard in Henderson can differ from the 89178 normal, while zone vs. frost date explains why Zone 9a and Henderson's frost date answer different questions.