Henderson, NV 89011 Frost Dates
89011, near Henderson, NV: the frost window
Around 01/21 is the usual last spring frost, about 146 days away. Fall's first freeze usually shows up around 12/17, roughly 328 days after the last spring frost.
Henderson sits in USDA Zone 9b (25 to 30°F average annual minimum). The dates above are NOAA's 1991-2020 normal at the nearest reporting station, a 30-year average, not a forecast.
Stretching the season past the first frost
Henderson's growing season runs out in roughly 16 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
01/21 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/05 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 12/29 and only about 1 year in 10 sees frost after that.
Henderson against the rest of the dataset
Henderson's growing season runs about 328 days, ranking 3,140 of 40,283 US ZIP codes measured here, longest to shortest. Within NV, it ranks 16 of 222.
Learn more
Two guides worth reading on 89011: the frost range, on how to read the range around Henderson's dates instead of trusting one, and local microclimates, on what one yard in Henderson can differ from the 89011 normal.