Huntsville, UT 84310 Frost Dates
84310, near Huntsville, UT: the frost window
The last spring frost here typically falls around 05/25, about 270 days from today. Fall's first freeze usually shows up around 09/26, roughly 123 days after the last spring frost.
Zone 6a (-10 to -5°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 Huntsville, not a forecast for this year.
Stretching the season past the first frost
Huntsville's growing season runs out in roughly 4 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
05/25 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 05/04 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 06/16 and only about 1 year in 10 sees frost after that.
Huntsville against the rest of the dataset
Huntsville's growing season runs about 123 days, ranking 38,912 of 40,283 US ZIP codes measured here, longest to shortest. Within UT, it ranks 275 of 344.
Learn more
Two guides worth reading on 84310: local microclimates, on what one yard in Huntsville can differ from the 84310 normal, and zone vs. frost date, on why Zone 6a and Huntsville's frost date answer different questions.