Frost Dates for 84129 — Taylorsville, Utah

Half of springs at Salt Lake Triad Ctr, UT see their last 32°F night by March 31; only one in ten is past it by March 7, and one in ten still has one after April 19. Planting tender crops after April 7 leaves a 30% risk of a frost on them, after April 12 20%, and after April 19 10%. The 19 days between the even-odds date and the one-in-ten date is wider than at 55% of the 66 Utah stations behind this site's ZIP pages.

In fall the first 32°F night comes by November 8 in half of years, as early as October 23 one year in ten, and holds off past November 25 one year in ten. A hard freeze of 28°F follows 10 days later, around November 18; in spring the one-in-ten date for 28°F is April 2, 17 days before the 32°F one. The freeze-free season lasts 224 days in a typical year, longer than at 98% of the 66 Utah stations; it reaches 254 days one year in ten and falls short of 195 one year in ten. On average 81 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 18 days longer, to about April 18, and return around October 28. Nights of 24°F, cold enough to damage hardier plants, come in 100% of winters and 16°F in 85%.

July is the warmest month at Salt Lake Triad Ctr, UT, averaging 91°F by day and 70°F at night; January is the coldest at 40°F and 28°F. A freezing night is all but certain in every month from November to March (a 90% chance or more). From May to September the chance of a 32°F night stays under 10% each month. In spring, April still brings one in 45% of years.

Warmth for growing adds up to 3,943 growing degree days a year (base 50°F), more than at 94% of the 66 Utah stations. 32% of them (1,253) have built up by the end of June, and July adds the most, 950. Precipitation totals 17.8 inches a year, most in April (2.5") and least in July (0.6"); May to September bring 32% of it.

The nearest other station, Salt Lake City E Bench, UT, 8 miles northeast of Taylorsville and 570 feet higher, has a last frost 25 days later (April 25), a first frost 21 days earlier (October 18), a season 49 days shorter.

The first measurable snow (0.1 inch or more) in Taylorsville usually arrives around November 4, and the last of the season around April 16. Those are the middle dates across the winters of 1991–2020 at Salt Lake Triad Ctr, UT, 7.9 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 16 days before the last snow.

ZIP 84129 is 8 miles from Salt Lake Triad Ctr, UT, which stands at 4,280 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. 5 other ZIP codes share the station. The 2023 USDA Plant Hardiness Zone Map lists ZIP 84129 in zone 7b, the band where the coldest night of the year averaged 5 to 10°F (-15.0 to -12.2°C) over 1991–2020; a zone describes winter lows, not frost dates.