Millville, UT 84323 Frost Dates
Millville, UT: when does the frost end?
The last spring frost here typically falls around 04/30, about 245 days from today. Fall's first freeze usually shows up around 10/16, roughly 166 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 Millville, not a forecast for this year.
Stretching the season past the first frost
With roughly 7 weeks until Millville's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around Millville's last frost
04/30 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/14 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/19 and only about 1 year in 10 sees frost after that.
Millville against the rest of the dataset
Millville's growing season runs about 166 days, ranking 30,382 of 40,283 US ZIP codes measured here, longest to shortest. Within UT, it ranks 139 of 344.
Learn more
Before leaning on 84323's figures: zone vs. frost date explains why Zone 6a and Millville's frost date answer different questions, while the frost range explains how to read the range around Millville's dates instead of trusting one.