Provo, UT 84604 Frost Dates
84604, near Provo, UT: the frost window
Around 04/18 is the usual last spring frost, about 233 days away. Fall's first freeze usually shows up around 10/21, roughly 185 days after the last spring frost.
Zone 6b (-5 to 0°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 Provo, not a forecast for this year.
Stretching the season past the first frost
Provo'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.
How much risk comes with planting early here
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.
Provo against the rest of the dataset
At roughly 185 frost-free days, Provo places 23,026 of 40,283 ZIP codes in this dataset. Within UT, it ranks 81 of 344.
Learn more
Two guides worth reading on 84604: zone vs. frost date, on why Zone 6b and Provo's frost date answer different questions, and the frost range, on how to read the range around Provo's dates instead of trusting one.