Frost Dates for 84312 — Garland, Utah

Half of springs at Tremonton, UT see their last 32°F night by April 24; only one in ten is past it by April 8, and one in ten still has one after May 9. Planting tender crops after April 30 leaves a 30% risk of a frost on them, after May 3 20%, and after May 9 10%. The 15 days between the even-odds date and the one-in-ten date is narrower than at 89% of the 66 Utah stations behind this site's ZIP pages.

In fall the first 32°F night comes by October 17 in half of years, as early as October 3 one year in ten, and holds off past November 1 one year in ten. A hard freeze of 28°F follows 9 days later, around October 26; in spring the one-in-ten date for 28°F is April 26, 13 days before the 32°F one. The freeze-free season lasts 175 days in a typical year, longer than at 71% of the 66 Utah stations; it reaches 194 days one year in ten and falls short of 154 one year in ten. On average 132 nights a year drop to 32°F or below. Nights of 36°F, when frost can still settle on leaves in low, open spots, continue 12 days longer, to about May 6, and return around October 7. Severe cold of 16°F or below comes every winter, usually between November 24 and March 1.

July is the warmest month at Tremonton, UT, averaging 91°F by day and 62°F at night; January is the coldest at 36°F and 19°F. A freezing night is all but certain in every month from November to April (a 90% chance or more). From June to September the chance of a 32°F night stays under 10% each month. In spring, May still brings one in 27% of years.

Warmth for growing adds up to 3,035 growing degree days a year (base 50°F), more than at 64% of the 66 Utah stations. 29% of them (873) have built up by the end of June, and July adds the most, 823. Precipitation totals 16.1 inches a year, most in January (2.1") and least in July (0.6"); May to September bring 35% of it.

The nearest other station, Logan 5 SW Exp Farm, UT, 15 miles southeast of Garland and 178 feet higher, has a last frost 18 days later (May 12), a first frost 19 days earlier (September 28), a season 37 days shorter.

The first measurable snow (0.1 inch or more) in Garland usually arrives around November 9, and the last of the season around April 4. Those are the middle dates across the winters of 1991–2020 at Tremonton, UT, 3.9 miles away: half of years saw snow earlier, half later. Every one of those winters saw snow. The last 32°F night of spring typically comes 20 days after the last snow.

ZIP 84312 is 4 miles from Tremonton, UT, which stands at 4,310 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. 1 other ZIP code shares the station; its figures are presented in full for 84337 (Tremonton). The 2023 USDA Plant Hardiness Zone Map lists ZIP 84312 in zone 6b, the band where the coldest night of the year averaged -5 to 0°F (-20.6 to -17.8°C) over 1991–2020; a zone describes winter lows, not frost dates.