Frost dates for ZIP 84112 (Salt Lake City, UT)
Average last spring and first fall frost dates with 10%, 50% and 90% odds, from NOAA's 1991–2020 climate normals for the nearest weather station, Salt Lake City E Bench, UT (2 miles away).
- Average last spring frostApr 2550% chance of a 32°F freeze after this date
- Average first fall frostOct 1850% chance of a 32°F freeze by this date
- Growing season (frost-free)175 daysmedian, 32°F threshold
- USDA hardiness zone7a0 to 5°F avg. coldest night
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This week in your yard
As of Oct 17, 2026, from your frost dates, zone and soil temperature. Lawn timing · Vegetables · Pruning · Plants
Soil temperature now
2-inch depth
50°F 50–55°F
24-hour average · latest 52°F, as of Oct 17, 10:00 PM CDT
Estimate Not a measurement at this ZIP: distance-weighted average of Morgan (18 mi), Grantsville (31 mi), Chicken Ridge (48 mi).
4-inch depth
51°F 50–55°F
24-hour average · latest 53°F, as of Oct 17, 10:00 PM CDT
Estimate Not a measurement at this ZIP: distance-weighted average of Morgan (18 mi), Grantsville (31 mi), Chicken Ridge (48 mi).
Fall: Texas A&M AgriLife times fall pre-emergent (for winter weeds such as annual bluegrass) to soil cooling to about 70°F for several days. The 50–55°F band is the spring trigger. Always read and follow the product label.
7-day forecast and frost risk
The latest National Weather Service 7-day forecast and any Frost Advisory or Freeze Warning for 84112 load here. You can also open the NWS forecast for this ZIP.
Pre-emergent
Soil is 51°F at 4 inches (estimated soil temperature, not a station reading). Fall pre-emergent window is mostly past. Next: spring, when soil reaches 50°F (typically mid-April to mid-May).
Fertilizer window
Lawn region: Mountain West and High Plains. Timing only; always follow the product label.
- Kentucky bluegrass (cool-season): Early fall: Around Labor Day (late August–September); Late fall: Late October–November, before the ground freezes; Late spring: Optional around Memorial Day. Avoid: Early-spring and midsummer feeding (pushes top growth, favors crabgrass).
Plant now
No vegetable planting windows are open this week.
Prune now
No frost-timed pruning windows are open this week.
Your average first frost is Oct 18: skip heavy pruning in the 6–8 weeks before it, because new growth may not harden off in time.
Spring-flowering shrubs are pruned right after their flowers fade, not by date. See the pruning guide.
Last spring frost odds
| Chance of a 32°F freeze after this date | Date |
|---|---|
| 90% (early: most years still freeze after this) | Apr 7 |
| 50% (the "average" last frost) | Apr 25 |
| 10% (cautious: only 1 year in 10 freezes later) | May 10 |
Most gardeners plant frost-tender crops (tomatoes, peppers, basil) after the 50% date, and closer to the 10% date for less risk.
First fall frost odds
| Chance the first 32°F freeze has happened by this date | Date |
|---|---|
| 10% (early: 1 year in 10 freezes this soon) | Oct 5 |
| 50% (the "average" first frost) | Oct 18 |
| 90% (late: most years have frozen by now) | Nov 1 |
Light frost, freeze and hard freeze
| Threshold | Last spring (50%) | First fall (50%) |
|---|---|---|
| 36°F (light frost possible on clear, calm nights) | May 8 | Oct 8 |
| 32°F (freeze) | Apr 25 | Oct 18 |
| 28°F (hard freeze) | Apr 7 | Oct 29 |
n/a means NOAA did not publish a date at that threshold for this station (usually because it rarely gets that cold).
Vegetable planting calendar for 84112
Dates count from your average last spring frost (Apr 25) and first fall frost (Oct 18). Half of years have a frost after the spring date, so give tender crops (tomatoes, peppers, squash) some slack.
| Crop | Start indoors | Spring planting | Fall planting |
|---|---|---|---|
| Tomato | Feb 28–Mar 14 | May 2–16 (transplant) | – |
| Pepper (sweet and hot) | Feb 14–28 | May 9–23 (transplant) | – |
| Eggplant | Feb 14–28 | May 9–23 (transplant) | – |
| Tomatillo | Feb 28–Mar 14 | May 2–16 (transplant) | – |
| Lettuce | Feb 28–Mar 14 | Apr 4–25 (transplant) Mar 28–May 9 (sow outdoors) | Aug 23–Sep 13 (transplant) Aug 9–Sep 6 (sowing) |
| Spinach | – | Mar 14–Apr 4 (sow outdoors) | Aug 23–Sep 13 (sowing) |
| Kale | Feb 28–Mar 14 | Mar 28–Apr 11 (transplant) Mar 28–Apr 11 (sow outdoors) | Jul 26–Aug 23 (transplant) Jul 12–Aug 9 (sowing) |
| Collards | Feb 28–Mar 14 | Mar 28–Apr 25 (transplant) Mar 28–Apr 25 (sow outdoors) | Jul 26–Aug 23 (transplant) Jul 12–Aug 9 (sowing) |
| Broccoli | Feb 14–28 | Mar 28–Apr 11 (transplant) | Jul 12–Aug 9 (transplant) |
| Cabbage | Feb 14–28 | Mar 28–Apr 11 (transplant) | Jul 12–Aug 9 (transplant) |
| Cauliflower | Feb 14–28 | Apr 11–25 (transplant) | Jul 12–Aug 9 (transplant) |
| Brussels sprouts | Jan 31–Feb 14 | Mar 28–Apr 11 (transplant) | Jun 28–Jul 19 (transplant) |
| Kohlrabi | Feb 28–Mar 14 | Mar 28–Apr 11 (transplant) Mar 28–Apr 11 (sow outdoors) | Aug 9–23 (sowing) |
| Bok choy / Asian greens | – | Mar 28–Apr 11 (sow outdoors) | Aug 23–Sep 6 (sowing) |
| Arugula | – | Mar 28–Apr 25 (sow outdoors) | Aug 23–Sep 20 (sowing) |
| Mustard greens | – | Mar 28–Apr 18 (sow outdoors) | Aug 23–Sep 6 (sowing) |
| Swiss chard | Mar 14–28 | Apr 11–May 2 (transplant) Apr 11–May 9 (sow outdoors) | Aug 9–23 (sowing) |
| Beet | – | Mar 28–Apr 25 (sow outdoors) | Aug 9–23 (sowing) |
| Carrot | – | Apr 4–May 2 (sow outdoors) | Jul 26–Aug 9 (sowing) |
| Radish | – | Mar 21–May 2 (sow outdoors) | Sep 6–20 (sowing) |
| Turnip | – | Mar 28–Apr 18 (sow outdoors) | Aug 9–23 (sowing) |
| Parsnip | – | Apr 4–25 (sow outdoors) | – |
| Pea (garden, snap, snow) | – | Feb 28–Mar 28 (sow outdoors) | Jul 26–Aug 9 (sowing) |
| Onion (bulbing) | Jan 31–Feb 14 | Mar 14–28 (transplant) | – |
| Green onion / scallion | – | Mar 14–Apr 11 (sow outdoors) | Aug 9–23 (sowing) |
| Leek | Jan 31–Feb 14 | Mar 28–Apr 11 (transplant) | – |
| Garlic | – | – | Sep 6–Oct 4 (sowing) |
| Shallot | – | Mar 14–28 (transplant) | Sep 6–Oct 4 (sowing) |
| Potato | – | Mar 28–Apr 11 (transplant) | Jun 28–Jul 12 (transplant) |
| Sweet potato | – | May 16–30 (transplant) | – |
| Sweet corn | – | May 2–16 (sow outdoors) | – |
| Bean, bush (snap) | – | May 2–16 (sow outdoors) | – |
| Bean, pole | – | May 2–16 (sow outdoors) | – |
| Lima bean | – | May 9–23 (sow outdoors) | – |
| Southern pea (cowpea, black-eyed pea) | – | May 16–Jun 6 (sow outdoors) | – |
| Cucumber | Mar 28–Apr 4 | May 2–16 (transplant) May 2–16 (sow outdoors) | – |
| Summer squash / zucchini | Mar 28–Apr 4 | May 2–16 (transplant) May 2–16 (sow outdoors) | – |
| Winter squash | Mar 28–Apr 4 | May 2–16 (transplant) May 2–16 (sow outdoors) | – |
| Pumpkin | – | May 2–16 (sow outdoors) | – |
| Watermelon | Mar 28–Apr 4 | May 9–23 (transplant) May 9–23 (sow outdoors) | – |
| Cantaloupe / muskmelon | Mar 28–Apr 4 | May 9–23 (transplant) May 9–23 (sow outdoors) | – |
| Okra | Mar 14–28 | May 9–23 (transplant) May 9–23 (sow outdoors) | – |
| Celery | Jan 31–Feb 14 | May 2–9 (transplant) | – |
| Basil | Mar 14–28 | May 2–16 (transplant) May 2–16 (sow outdoors) | – |
| Cilantro | – | Apr 11–May 9 (sow outdoors) | Aug 23–Sep 6 (sowing) |
| Parsley | Feb 14–28 | Apr 11–25 (transplant) Apr 4–25 (sow outdoors) | – |
| Dill | – | Apr 25–May 9 (sow outdoors) | Aug 23–Sep 6 (sowing) |
| Sunflower | – | Apr 25–May 9 (sow outdoors) | – |
| Asparagus (crowns) | – | Mar 28–Apr 11 (transplant) | – |
| Rhubarb (crowns) | – | Mar 28–Apr 11 (transplant) | – |
| Strawberry (plants) | – | Mar 28–Apr 11 (transplant) | Aug 9–Sep 6 (transplant) |
Typical ranges from university extension planting calendars, adjusted to your frost dates. Probabilities, not guarantees. Fall windows that would overlap spring planting are left out, as are fall crops of frost-tender plants where the frost-free season is under 210 days.
Where these numbers come from
Station: Salt Lake City E Bench, UT (NOAA GHCN-Daily ID USC00427655), elevation 4,850 ft, 2.4 miles from the ZIP's center point. NOAA completeness flag: R (representative, 10+ years).
Nearby stations
| Station | Distance | Last frost (50%) | First frost (50%) |
|---|---|---|---|
| Salt Lake Triad Ctr, UT | 3 mi | Mar 31 | Nov 8 |
| City Creek WTP, UT | 3 mi | May 13 | Oct 7 |
| Mtn Dell Dam, UT | 6 mi | May 7 | Oct 14 |
The average last-frost dates of these stations span 44 days, a rough guide to local variation. See data sources & methods.
Frost questions for 84112
When is the last frost in 84112?
The average (50% chance) last spring freeze of 32°F for ZIP 84112 is April 25. For a more cautious planting date, use May 10, when only 1 year in 10 still sees a later freeze.
When is the first frost in 84112?
The average first fall freeze is October 18. In 1 year in 10 it comes by October 5.
What hardiness zone is 84112?
ZIP 84112 is in USDA zone 7a (0 to 5°F average coldest winter night), per the 2023 USDA Plant Hardiness Zone Map ZIP listing.
What is the soil temperature in 84112 right now?
This page shows the latest 2-inch and 4-inch soil temperature from the nearest public soil station (USDA SCAN, NOAA USCRN or TexMesonet), or a labeled estimate when no station is close, against the 50–55°F spring pre-emergent band.
Nearby ZIP codes
84113 Salt Lake City 84102 Salt Lake City 84105 Salt Lake City 84111 Salt Lake City 84138 Salt Lake City 84114 Salt Lake City 84150 Salt Lake City 84103 Salt Lake City
Other ZIP codes in Salt Lake County
84006 84009 84020 84044 84047 84065 84070 84081 84084 84088 84092 84093 84094 84095 84096 84101 84102 84103 84104 84105 84106 84107 84108 84109 All Salt Lake County frost dates · Utah frost dates
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