Henderson, NV 89141 Frost Dates
Henderson, NV: when does the frost end?
Typically, the last spring freeze lands around 02/04, roughly 160 days out. Fall's first freeze usually shows up around 12/05, roughly 302 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 14 weeks until Henderson's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around Henderson's last frost
02/04 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 01/10 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 02/27 and only about 1 year in 10 sees frost after that.
Henderson against the rest of the dataset
About 302 days separate Henderson's last and first frost, putting it 3,800 of 40,283 ZIP codes nationally. Within NV, it ranks 89 of 222.
Learn more
Before leaning on 89141's figures: zone vs. frost date explains why Zone 9a and Henderson's frost date answer different questions, while the frost range explains how to read the range around Henderson's dates instead of trusting one.