Fall in zone 6aPhoto: Dietmar Rabich, CC BY-SA 4.0, via Wikimedia Commons
Frost dates for ZIP 84739 (Joseph, 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, Fremont Indian Sp, UT (8 miles away).
- Average last spring frostJun 450% chance of a 32°F freeze after this date
- Average first fall frostSep 2150% chance of a 32°F freeze by this date
- Growing season (frost-free)106 daysmedian, 32°F threshold
- USDA hardiness zone6a-10 to -5°F avg. coldest night
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Frost and freeze alerts from the NWS forecast for 84739, the spring soil-temperature heads-up for pre-emergent, and a short weekly yard-timing email.
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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
49°F Below 50°F
24-hour average · latest 50°F, as of Oct 18, 2:00 AM CDT
Estimate Not a measurement at this ZIP: distance-weighted average of Manderfield (30 mi), Circleville (34 mi), Holden (39 mi).
4-inch depth
49°F Below 50°F
24-hour average · latest 50°F, as of Oct 18, 2:00 AM CDT
Estimate Not a measurement at this ZIP: distance-weighted average of Circleville (34 mi), Holden (39 mi), Panguitch (55 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 84739 load here. You can also open the NWS forecast for this ZIP.
Pre-emergent
Soil is 49°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.
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 19 |
| 50% (the "average" last frost) | Jun 4 |
| 10% (cautious: only 1 year in 10 freezes later) | Jun 21 |
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) | Sep 6 |
| 50% (the "average" first frost) | Sep 21 |
| 90% (late: most years have frozen by now) | Oct 1 |
Light frost, freeze and hard freeze
| Threshold | Last spring (50%) | First fall (50%) |
|---|---|---|
| 36°F (light frost possible on clear, calm nights) | Jun 16 | Sep 12 |
| 32°F (freeze) | Jun 4 | Sep 21 |
| 28°F (hard freeze) | May 19 | Sep 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 84739
Dates count from your average last spring frost (Jun 4) and first fall frost (Sep 21). 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 9–23 | Jun 11–25 (transplant) | – |
| Pepper (sweet and hot) | Mar 26–Apr 9 | Jun 18–Jul 2 (transplant) | – |
| Eggplant | Mar 26–Apr 9 | Jun 18–Jul 2 (transplant) | – |
| Tomatillo | Apr 9–23 | Jun 11–25 (transplant) | – |
| Lettuce | Apr 9–23 | May 14–Jun 4 (transplant) May 7–Jun 18 (sow outdoors) | Jul 27–Aug 17 (transplant) Jul 13–Aug 10 (sowing) |
| Spinach | – | Apr 23–May 14 (sow outdoors) | Jul 27–Aug 17 (sowing) |
| Kale | Apr 9–23 | May 7–21 (transplant) May 7–21 (sow outdoors) | Jun 29–Jul 27 (transplant) Jun 15–Jul 13 (sowing) |
| Collards | Apr 9–23 | May 7–Jun 4 (transplant) May 7–Jun 4 (sow outdoors) | Jun 29–Jul 27 (transplant) Jun 15–Jul 13 (sowing) |
| Broccoli | Mar 26–Apr 9 | May 7–21 (transplant) | Jun 15–Jul 13 (transplant) |
| Cabbage | Mar 26–Apr 9 | May 7–21 (transplant) | Jun 15–Jul 13 (transplant) |
| Cauliflower | Mar 26–Apr 9 | May 21–Jun 4 (transplant) | Jun 15–Jul 13 (transplant) |
| Brussels sprouts | Mar 12–26 | May 7–21 (transplant) | Jun 1–22 (transplant) |
| Kohlrabi | Apr 9–23 | May 7–21 (transplant) May 7–21 (sow outdoors) | Jul 13–27 (sowing) |
| Bok choy / Asian greens | – | May 7–21 (sow outdoors) | Jul 27–Aug 10 (sowing) |
| Arugula | – | May 7–Jun 4 (sow outdoors) | Jul 27–Aug 24 (sowing) |
| Mustard greens | – | May 7–28 (sow outdoors) | Jul 27–Aug 10 (sowing) |
| Swiss chard | Apr 23–May 7 | May 21–Jun 11 (transplant) May 21–Jun 18 (sow outdoors) | Jul 13–27 (sowing) |
| Beet | – | May 7–Jun 4 (sow outdoors) | Jul 13–27 (sowing) |
| Carrot | – | May 14–Jun 11 (sow outdoors) | Jun 29–Jul 13 (sowing) |
| Radish | – | Apr 30–Jun 11 (sow outdoors) | Aug 10–24 (sowing) |
| Turnip | – | May 7–28 (sow outdoors) | Jul 13–27 (sowing) |
| Parsnip | – | May 14–Jun 4 (sow outdoors) | – |
| Pea (garden, snap, snow) | – | Apr 9–May 7 (sow outdoors) | Jun 29–Jul 13 (sowing) |
| Onion (bulbing) | Mar 12–26 | Apr 23–May 7 (transplant) | – |
| Green onion / scallion | – | Apr 23–May 21 (sow outdoors) | Jul 13–27 (sowing) |
| Leek | Mar 12–26 | May 7–21 (transplant) | – |
| Garlic | – | – | Aug 10–Sep 7 (sowing) |
| Shallot | – | Apr 23–May 7 (transplant) | Aug 10–Sep 7 (sowing) |
| Potato | – | May 7–21 (transplant) | Jun 1–15 (transplant) |
| Sweet potato | – | Jun 25–Jul 9 (transplant) | – |
| Sweet corn | – | Jun 11–25 (sow outdoors) | – |
| Bean, bush (snap) | – | Jun 11–25 (sow outdoors) | – |
| Bean, pole | – | Jun 11–25 (sow outdoors) | – |
| Lima bean | – | Jun 18–Jul 2 (sow outdoors) | – |
| Southern pea (cowpea, black-eyed pea) | – | Jun 25–Jul 16 (sow outdoors) | – |
| Cucumber | May 7–14 | Jun 11–25 (transplant) Jun 11–25 (sow outdoors) | – |
| Summer squash / zucchini | May 7–14 | Jun 11–25 (transplant) Jun 11–25 (sow outdoors) | – |
| Winter squash | May 7–14 | Jun 11–25 (transplant) Jun 11–25 (sow outdoors) | – |
| Pumpkin | – | Jun 11–25 (sow outdoors) | – |
| Watermelon | May 7–14 | Jun 18–Jul 2 (transplant) Jun 18–Jul 2 (sow outdoors) | – |
| Cantaloupe / muskmelon | May 7–14 | Jun 18–Jul 2 (transplant) Jun 18–Jul 2 (sow outdoors) | – |
| Okra | Apr 23–May 7 | Jun 18–Jul 2 (transplant) Jun 18–Jul 2 (sow outdoors) | – |
| Celery | Mar 12–26 | Jun 11–18 (transplant) | – |
| Basil | Apr 23–May 7 | Jun 11–25 (transplant) Jun 11–25 (sow outdoors) | – |
| Cilantro | – | May 21–Jun 18 (sow outdoors) | Jul 27–Aug 10 (sowing) |
| Parsley | Mar 26–Apr 9 | May 21–Jun 4 (transplant) May 14–Jun 4 (sow outdoors) | – |
| Dill | – | Jun 4–18 (sow outdoors) | Jul 27–Aug 10 (sowing) |
| Sunflower | – | Jun 4–18 (sow outdoors) | – |
| Asparagus (crowns) | – | May 7–21 (transplant) | – |
| Rhubarb (crowns) | – | May 7–21 (transplant) | – |
| Strawberry (plants) | – | May 7–21 (transplant) | Jul 13–Aug 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: Fremont Indian Sp, UT (NOAA GHCN-Daily ID USC00423012), elevation 5,920 ft, 7.5 miles from the ZIP's center point. NOAA completeness flag: R (representative, 10+ years).
Nearby stations
| Station | Distance | Last frost (50%) | First frost (50%) |
|---|---|---|---|
| Richfield Radio Ksvc, UT | 11 mi | May 21 | Sep 24 |
| Marysvale, UT | 13 mi | May 24 | Sep 25 |
| Kanosh, UT | 16 mi | Apr 30 | Oct 19 |
The average last-frost dates of these stations span 36 days, a rough guide to local variation. See data sources & methods.
Frost questions for 84739
When is the last frost in 84739?
The average (50% chance) last spring freeze of 32°F for ZIP 84739 is June 4. For a more cautious planting date, use June 21, when only 1 year in 10 still sees a later freeze.
When is the first frost in 84739?
The average first fall freeze is September 21. In 1 year in 10 it comes by September 6.
What hardiness zone is 84739?
ZIP 84739 is in USDA zone 6a (-10 to -5°F average coldest winter night), per the 2023 USDA Plant Hardiness Zone Map ZIP listing.
What is the soil temperature in 84739 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
84724 Elsinore 84754 Monroe 84766 84711 Annabella 84730 Glenwood 84750 Marysvale 84637 Kanosh 84644 Meadow
Other ZIP codes in Sevier County
84620 84652 84654 84657 84701 84711 84724 84730 84744 84754 84766 All Sevier County frost dates · Utah frost dates
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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.