Carson, NV 89721 Frost Dates
89721, near Carson, NV: the frost window
Around 05/04 is the usual last spring frost, about 249 days away. Fall's first freeze usually shows up around 10/06, roughly 152 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Carson in Zone 7a (0 to 5°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
Stretching the season past the first frost
Carson's growing season runs out in roughly 6 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
Why 05/04 isn't a guarantee
05/04 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/20 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/29 and only about 1 year in 10 sees frost after that.
Carson against the rest of the dataset
About 152 days separate Carson's last and first frost, putting it 34,679 of 40,283 ZIP codes nationally. Within NV, it ranks 177 of 222.
Learn more
Two guides worth reading on 89721: the frost range, on how to read the range around Carson's dates instead of trusting one, and local microclimates, on what one yard in Carson can differ from the 89721 normal.