Springville, UT 84663 Frost Dates
84663, near Springville, UT: the frost window
The last spring frost here typically falls around 04/18, about 233 days from today. Fall's first freeze usually shows up around 10/21, roughly 185 days after the last spring frost.
Springville sits in USDA Zone 6b (-5 to 0°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
Springville's growing season runs out in roughly 8 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
Why 04/18 isn't a guarantee
04/18 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/31 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/05 and only about 1 year in 10 sees frost after that.
Springville against the rest of the dataset
Springville's growing season runs about 185 days, ranking 23,061 of 40,283 US ZIP codes measured here, longest to shortest. Within UT, it ranks 86 of 344.
Learn more
Two guides worth reading on 84663: local microclimates, on what one yard in Springville can differ from the 84663 normal, and zone vs. frost date, on why Zone 6b and Springville's frost date answer different questions.