Fall in zone 7aPhoto: Dietmar Rabich, CC BY-SA 4.0, via Wikimedia Commons
Frost dates for ZIP 84009 (South Jordan, 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, Draper-point Of Mtn, UT (8 miles away).
- Average last spring frostApr 1850% chance of a 32°F freeze after this date
- Average first fall frostOct 2250% chance of a 32°F freeze by this date
- Growing season (frost-free)185 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 18, 2026, from your frost dates, zone and soil temperature. Lawn timing · Vegetables · Pruning · Plants
Soil temperature now
2-inch depth
52°F 50–55°F
24-hour average · latest 49°F, as of Oct 18, 2:00 AM CDT
Estimate Not a measurement at this ZIP: distance-weighted average of Grantsville (20 mi), Morgan (35 mi).
4-inch depth
53°F 50–55°F
24-hour average · latest 53°F, as of Oct 18, 2:00 AM CDT
Estimate Not a measurement at this ZIP: distance-weighted average of Grantsville (20 mi), Morgan (35 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 84009 load here. You can also open the NWS forecast for this ZIP.
Pre-emergent
Soil is 53°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 22: 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) | Mar 31 |
| 50% (the "average" last frost) | Apr 18 |
| 10% (cautious: only 1 year in 10 freezes later) | May 6 |
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 7 |
| 50% (the "average" first frost) | Oct 22 |
| 90% (late: most years have frozen by now) | Nov 5 |
Light frost, freeze and hard freeze
| Threshold | Last spring (50%) | First fall (50%) |
|---|---|---|
| 36°F (light frost possible on clear, calm nights) | May 2 | Oct 10 |
| 32°F (freeze) | Apr 18 | Oct 22 |
| 28°F (hard freeze) | Mar 31 | Nov 2 |
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 84009
Dates count from your average last spring frost (Apr 18) and first fall frost (Oct 22). 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 21–Mar 7 | Apr 25–May 9 (transplant) | – |
| Pepper (sweet and hot) | Feb 7–21 | May 2–16 (transplant) | – |
| Eggplant | Feb 7–21 | May 2–16 (transplant) | – |
| Tomatillo | Feb 21–Mar 7 | Apr 25–May 9 (transplant) | – |
| Lettuce | Feb 21–Mar 7 | Mar 28–Apr 18 (transplant) Mar 21–May 2 (sow outdoors) | Aug 27–Sep 17 (transplant) Aug 13–Sep 10 (sowing) |
| Spinach | – | Mar 7–28 (sow outdoors) | Aug 27–Sep 17 (sowing) |
| Kale | Feb 21–Mar 7 | Mar 21–Apr 4 (transplant) Mar 21–Apr 4 (sow outdoors) | Jul 30–Aug 27 (transplant) Jul 16–Aug 13 (sowing) |
| Collards | Feb 21–Mar 7 | Mar 21–Apr 18 (transplant) Mar 21–Apr 18 (sow outdoors) | Jul 30–Aug 27 (transplant) Jul 16–Aug 13 (sowing) |
| Broccoli | Feb 7–21 | Mar 21–Apr 4 (transplant) | Jul 16–Aug 13 (transplant) |
| Cabbage | Feb 7–21 | Mar 21–Apr 4 (transplant) | Jul 16–Aug 13 (transplant) |
| Cauliflower | Feb 7–21 | Apr 4–18 (transplant) | Jul 16–Aug 13 (transplant) |
| Brussels sprouts | Jan 24–Feb 7 | Mar 21–Apr 4 (transplant) | Jul 2–23 (transplant) |
| Kohlrabi | Feb 21–Mar 7 | Mar 21–Apr 4 (transplant) Mar 21–Apr 4 (sow outdoors) | Aug 13–27 (sowing) |
| Bok choy / Asian greens | – | Mar 21–Apr 4 (sow outdoors) | Aug 27–Sep 10 (sowing) |
| Arugula | – | Mar 21–Apr 18 (sow outdoors) | Aug 27–Sep 24 (sowing) |
| Mustard greens | – | Mar 21–Apr 11 (sow outdoors) | Aug 27–Sep 10 (sowing) |
| Swiss chard | Mar 7–21 | Apr 4–25 (transplant) Apr 4–May 2 (sow outdoors) | Aug 13–27 (sowing) |
| Beet | – | Mar 21–Apr 18 (sow outdoors) | Aug 13–27 (sowing) |
| Carrot | – | Mar 28–Apr 25 (sow outdoors) | Jul 30–Aug 13 (sowing) |
| Radish | – | Mar 14–Apr 25 (sow outdoors) | Sep 10–24 (sowing) |
| Turnip | – | Mar 21–Apr 11 (sow outdoors) | Aug 13–27 (sowing) |
| Parsnip | – | Mar 28–Apr 18 (sow outdoors) | – |
| Pea (garden, snap, snow) | – | Feb 21–Mar 21 (sow outdoors) | Jul 30–Aug 13 (sowing) |
| Onion (bulbing) | Jan 24–Feb 7 | Mar 7–21 (transplant) | – |
| Green onion / scallion | – | Mar 7–Apr 4 (sow outdoors) | Aug 13–27 (sowing) |
| Leek | Jan 24–Feb 7 | Mar 21–Apr 4 (transplant) | – |
| Garlic | – | – | Sep 10–Oct 8 (sowing) |
| Shallot | – | Mar 7–21 (transplant) | Sep 10–Oct 8 (sowing) |
| Potato | – | Mar 21–Apr 4 (transplant) | Jul 2–16 (transplant) |
| Sweet potato | – | May 9–23 (transplant) | – |
| Sweet corn | – | Apr 25–May 9 (sow outdoors) | – |
| Bean, bush (snap) | – | Apr 25–May 9 (sow outdoors) | – |
| Bean, pole | – | Apr 25–May 9 (sow outdoors) | – |
| Lima bean | – | May 2–16 (sow outdoors) | – |
| Southern pea (cowpea, black-eyed pea) | – | May 9–30 (sow outdoors) | – |
| Cucumber | Mar 21–28 | Apr 25–May 9 (transplant) Apr 25–May 9 (sow outdoors) | – |
| Summer squash / zucchini | Mar 21–28 | Apr 25–May 9 (transplant) Apr 25–May 9 (sow outdoors) | – |
| Winter squash | Mar 21–28 | Apr 25–May 9 (transplant) Apr 25–May 9 (sow outdoors) | – |
| Pumpkin | – | Apr 25–May 9 (sow outdoors) | – |
| Watermelon | Mar 21–28 | May 2–16 (transplant) May 2–16 (sow outdoors) | – |
| Cantaloupe / muskmelon | Mar 21–28 | May 2–16 (transplant) May 2–16 (sow outdoors) | – |
| Okra | Mar 7–21 | May 2–16 (transplant) May 2–16 (sow outdoors) | – |
| Celery | Jan 24–Feb 7 | Apr 25–May 2 (transplant) | – |
| Basil | Mar 7–21 | Apr 25–May 9 (transplant) Apr 25–May 9 (sow outdoors) | – |
| Cilantro | – | Apr 4–May 2 (sow outdoors) | Aug 27–Sep 10 (sowing) |
| Parsley | Feb 7–21 | Apr 4–18 (transplant) Mar 28–Apr 18 (sow outdoors) | – |
| Dill | – | Apr 18–May 2 (sow outdoors) | Aug 27–Sep 10 (sowing) |
| Sunflower | – | Apr 18–May 2 (sow outdoors) | – |
| Asparagus (crowns) | – | Mar 21–Apr 4 (transplant) | – |
| Rhubarb (crowns) | – | Mar 21–Apr 4 (transplant) | – |
| Strawberry (plants) | – | Mar 21–Apr 4 (transplant) | Aug 13–Sep 10 (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: Draper-point Of Mtn, UT (NOAA GHCN-Daily ID USC00422235), elevation 4,506 ft, 7.7 miles from the ZIP's center point. NOAA completeness flag: R (representative, 10+ years).
Nearby stations
| Station | Distance | Last frost (50%) | First frost (50%) |
|---|---|---|---|
| Cottonwood Weir, UT | 13 mi | Apr 29 | Oct 22 |
| Alpine, UT | 14 mi | May 3 | Oct 12 |
| Utah Lake Lehi, UT | 15 mi | Apr 30 | Oct 9 |
The average last-frost dates of these stations span 16 days, a rough guide to local variation. See data sources & methods.
Frost questions for 84009
When is the last frost in 84009?
The average (50% chance) last spring freeze of 32°F for ZIP 84009 is April 18. For a more cautious planting date, use May 6, when only 1 year in 10 still sees a later freeze.
When is the first frost in 84009?
The average first fall freeze is October 22. In 1 year in 10 it comes by October 7.
What hardiness zone is 84009?
ZIP 84009 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 84009 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
84081 West Jordan 84095 South Jordan 84088 West Jordan 84084 West Jordan 84065 Bluffdale 84096 Herriman 84006 West Jordan 84070 Sandy
Other ZIP codes in Salt Lake County
84006 84020 84044 84047 84065 84070 84081 84084 84088 84092 84093 84094 84095 84096 84101 84102 84103 84104 84105 84106 84107 84108 84109 84111 All Salt Lake County frost dates · Utah frost dates
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Weekly yard timing, plus frost and soil-temperature alerts for your ZIP code.
- Freeze alerts
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Free. One weekly email plus alerts when your ZIP has a frost or a soil-temperature change worth acting on. After you submit, Kit (our email provider) sends a confirmation email: check your email and click the link to confirm. You aren't subscribed until you do. We collect only your email address and ZIP, sent to Kit to deliver The Dial. Unsubscribe anytime.