Boulder City, NV 89046 Frost Dates
When can you plant in Boulder City, NV?
Typically, the last spring freeze lands around 03/07, roughly 191 days out. The first fall frost typically arrives around 11/29, about 266 frost-free days later.
Boulder City 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.
What to do before the first frost
About 13 weeks of growing season left in Boulder City before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
Why 03/07 isn't a guarantee
03/07 is the middle of 30 years of NOAA records, not a promise. Plant by 02/08 and you're betting against frost in roughly 9 years out of 10. 04/10 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Boulder City compares
At roughly 266 frost-free days, Boulder City places 5,930 of 40,283 ZIP codes in this dataset. Within NV, it ranks 98 of 222.
Learn more
the frost range covers how to read the range around Boulder City's dates instead of trusting one. local microclimates covers what one yard in Boulder City can differ from the 89046 normal.