Frost dates for ZIP 84034 (Tooele County, 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, Ibapah, UT (7 miles away).
- Average last spring frostJun 1450% chance of a 32°F freeze after this date
- Average first fall frostSep 850% chance of a 32°F freeze by this date
- Growing season (frost-free)86 daysmedian, 32°F threshold
- USDA hardiness zone6b-5 to 0°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
51°F 50–55°F
24-hour average · latest 54°F, as of Oct 17, 10:00 PM CDT
Measured at USDA NRCS SCAN station Goshute, 6 mi away. Daily averages: Thu 51°, Fri 51°.
4-inch depth
52°F 50–55°F
24-hour average · latest 57°F, as of Oct 17, 10:00 PM CDT
Measured at USDA NRCS SCAN station Goshute, 6 mi away. Daily averages: Thu 52°, Fri 52°.
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 84034 load here. You can also open the NWS forecast for this ZIP.
Pre-emergent
Soil is 52°F at 4 inches. 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.
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) | May 23 |
| 50% (the "average" last frost) | Jun 14 |
| 10% (cautious: only 1 year in 10 freezes later) | Jul 1 |
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) | Aug 23 |
| 50% (the "average" first frost) | Sep 8 |
| 90% (late: most years have frozen by now) | Sep 22 |
Light frost, freeze and hard freeze
| Threshold | Last spring (50%) | First fall (50%) |
|---|---|---|
| 36°F (light frost possible on clear, calm nights) | n/a | n/a |
| 32°F (freeze) | Jun 14 | Sep 8 |
| 28°F (hard freeze) | May 25 | Sep 19 |
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 84034
Dates count from your average last spring frost (Jun 14) and first fall frost (Sep 8). 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 | Apr 19–May 3 | Jun 21–Jul 5 (transplant) | – |
| Pepper (sweet and hot) | Apr 5–19 | Jun 28–Jul 12 (transplant) | – |
| Eggplant | Apr 5–19 | Jun 28–Jul 12 (transplant) | – |
| Tomatillo | Apr 19–May 3 | Jun 21–Jul 5 (transplant) | – |
| Lettuce | Apr 19–May 3 | May 24–Jun 14 (transplant) May 17–Jun 28 (sow outdoors) | Jul 14–Aug 4 (transplant) Jun 30–Jul 28 (sowing) |
| Spinach | – | May 3–24 (sow outdoors) | Jul 14–Aug 4 (sowing) |
| Kale | Apr 19–May 3 | May 17–31 (transplant) May 17–31 (sow outdoors) | Jun 16–Jul 14 (transplant) Jun 2–30 (sowing) |
| Collards | Apr 19–May 3 | May 17–Jun 14 (transplant) May 17–Jun 14 (sow outdoors) | Jun 16–Jul 14 (transplant) |
| Broccoli | Apr 5–19 | May 17–31 (transplant) | Jun 2–30 (transplant) |
| Cabbage | Apr 5–19 | May 17–31 (transplant) | Jun 2–30 (transplant) |
| Cauliflower | Apr 5–19 | May 31–Jun 14 (transplant) | – |
| Brussels sprouts | Mar 22–Apr 5 | May 17–31 (transplant) | – |
| Kohlrabi | Apr 19–May 3 | May 17–31 (transplant) May 17–31 (sow outdoors) | Jun 30–Jul 14 (sowing) |
| Bok choy / Asian greens | – | May 17–31 (sow outdoors) | Jul 14–28 (sowing) |
| Arugula | – | May 17–Jun 14 (sow outdoors) | Jul 14–Aug 11 (sowing) |
| Mustard greens | – | May 17–Jun 7 (sow outdoors) | Jul 14–28 (sowing) |
| Swiss chard | May 3–17 | May 31–Jun 21 (transplant) May 31–Jun 28 (sow outdoors) | Jun 30–Jul 14 (sowing) |
| Beet | – | May 17–Jun 14 (sow outdoors) | Jun 30–Jul 14 (sowing) |
| Carrot | – | May 24–Jun 21 (sow outdoors) | – |
| Radish | – | May 10–Jun 21 (sow outdoors) | Jul 28–Aug 11 (sowing) |
| Turnip | – | May 17–Jun 7 (sow outdoors) | Jun 30–Jul 14 (sowing) |
| Parsnip | – | May 24–Jun 14 (sow outdoors) | – |
| Pea (garden, snap, snow) | – | Apr 19–May 17 (sow outdoors) | Jun 16–30 (sowing) |
| Onion (bulbing) | Mar 22–Apr 5 | May 3–17 (transplant) | – |
| Green onion / scallion | – | May 3–31 (sow outdoors) | Jun 30–Jul 14 (sowing) |
| Leek | Mar 22–Apr 5 | May 17–31 (transplant) | – |
| Garlic | – | – | Jul 28–Aug 25 (sowing) |
| Shallot | – | May 3–17 (transplant) | Jul 28–Aug 25 (sowing) |
| Potato | – | May 17–31 (transplant) | – |
| Sweet potato | – | Jul 5–19 (transplant) | – |
| Sweet corn | – | Jun 21–Jul 5 (sow outdoors) | – |
| Bean, bush (snap) | – | Jun 21–Jul 5 (sow outdoors) | – |
| Bean, pole | – | Jun 21–Jul 5 (sow outdoors) | – |
| Lima bean | – | Jun 28–Jul 12 (sow outdoors) | – |
| Southern pea (cowpea, black-eyed pea) | – | Jul 5–26 (sow outdoors) | – |
| Cucumber | May 17–24 | Jun 21–Jul 5 (transplant) Jun 21–Jul 5 (sow outdoors) | – |
| Summer squash / zucchini | May 17–24 | Jun 21–Jul 5 (transplant) Jun 21–Jul 5 (sow outdoors) | – |
| Winter squash | May 17–24 | Jun 21–Jul 5 (transplant) Jun 21–Jul 5 (sow outdoors) | – |
| Pumpkin | – | Jun 21–Jul 5 (sow outdoors) | – |
| Watermelon | May 17–24 | Jun 28–Jul 12 (transplant) Jun 28–Jul 12 (sow outdoors) | – |
| Cantaloupe / muskmelon | May 17–24 | Jun 28–Jul 12 (transplant) Jun 28–Jul 12 (sow outdoors) | – |
| Okra | May 3–17 | Jun 28–Jul 12 (transplant) Jun 28–Jul 12 (sow outdoors) | – |
| Celery | Mar 22–Apr 5 | Jun 21–28 (transplant) | – |
| Basil | May 3–17 | Jun 21–Jul 5 (transplant) Jun 21–Jul 5 (sow outdoors) | – |
| Cilantro | – | May 31–Jun 28 (sow outdoors) | Jul 14–28 (sowing) |
| Parsley | Apr 5–19 | May 31–Jun 14 (transplant) May 24–Jun 14 (sow outdoors) | – |
| Dill | – | Jun 14–28 (sow outdoors) | Jul 14–28 (sowing) |
| Sunflower | – | Jun 14–28 (sow outdoors) | – |
| Asparagus (crowns) | – | May 17–31 (transplant) | – |
| Rhubarb (crowns) | – | May 17–31 (transplant) | – |
| Strawberry (plants) | – | May 17–31 (transplant) | Jun 30–Jul 28 (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: Ibapah, UT (NOAA GHCN-Daily ID USC00424174), elevation 5,279 ft, 6.6 miles from the ZIP's center point. NOAA completeness flag: S (standard, 24+ years).
Nearby stations
| Station | Distance | Last frost (50%) | First frost (50%) |
|---|---|---|---|
| Callao, UT | 11 mi | May 14 | Sep 28 |
| Partoun, UT | 25 mi | May 13 | Sep 29 |
| Fish Springs Nwr, UT | 28 mi | Apr 26 | Oct 14 |
The average last-frost dates of these stations span 50 days, a rough guide to local variation. See data sources & methods.
Frost questions for 84034
When is the last frost in 84034?
The average (50% chance) last spring freeze of 32°F for ZIP 84034 is June 14. For a more cautious planting date, use July 1, when only 1 year in 10 still sees a later freeze.
When is the first frost in 84034?
The average first fall freeze is September 8. In 1 year in 10 it comes by August 23.
What hardiness zone is 84034?
ZIP 84034 is in USDA zone 6b (-5 to 0°F average coldest winter night), per the 2023 USDA Plant Hardiness Zone Map ZIP listing.
What is the soil temperature in 84034 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
84728 89311 Baker 89301 Ely 84083 Wendover 89883 West Wendover 89318 McGill 84029 Grantsville 84022 Dugway
Other ZIP codes in Tooele County
84022 84029 84069 84071 84074 84080 84083 All Tooele County frost dates · Utah frost dates
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Weekly yard timing, plus frost and soil-temperature alerts for your ZIP code.
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