Frost dates for ZIP 84772 (Summit, 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, Brian Head, UT (9 miles away).
- Average last spring frostJun 2150% chance of a 32°F freeze after this date
- Average first fall frostSep 1250% chance of a 32°F freeze by this date
- Growing season (frost-free)82 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
42°F Below 50°F
24-hour average · latest 46°F, as of Oct 17, 10:00 PM CDT
Estimate Not a measurement at this ZIP: distance-weighted average of Panguitch (29 mi), Manderfield (43 mi), Circleville (45 mi).
4-inch depth
50°F Below 50°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 Panguitch (29 mi), Circleville (45 mi), Sand Hollow (53 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 84772 load here. You can also open the NWS forecast for this ZIP.
Pre-emergent
Soil is 50°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) | Jun 6 |
| 50% (the "average" last frost) | Jun 21 |
| 10% (cautious: only 1 year in 10 freezes later) | Jul 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) | Sep 1 |
| 50% (the "average" first frost) | Sep 12 |
| 90% (late: most years have frozen by now) | Sep 23 |
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 21 | Sep 12 |
| 28°F (hard freeze) | Jun 7 | Sep 22 |
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 84772
Dates count from your average last spring frost (Jun 21) and first fall frost (Sep 12). 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 26–May 10 | Jun 28–Jul 12 (transplant) | – |
| Pepper (sweet and hot) | Apr 12–26 | Jul 5–19 (transplant) | – |
| Eggplant | Apr 12–26 | Jul 5–19 (transplant) | – |
| Tomatillo | Apr 26–May 10 | Jun 28–Jul 12 (transplant) | – |
| Lettuce | Apr 26–May 10 | May 31–Jun 21 (transplant) May 24–Jul 5 (sow outdoors) | Jul 18–Aug 8 (transplant) |
| Spinach | – | May 10–31 (sow outdoors) | Jul 18–Aug 8 (sowing) |
| Kale | Apr 26–May 10 | May 24–Jun 7 (transplant) May 24–Jun 7 (sow outdoors) | Jun 20–Jul 18 (transplant) |
| Collards | Apr 26–May 10 | May 24–Jun 21 (transplant) May 24–Jun 21 (sow outdoors) | – |
| Broccoli | Apr 12–26 | May 24–Jun 7 (transplant) | – |
| Cabbage | Apr 12–26 | May 24–Jun 7 (transplant) | – |
| Cauliflower | Apr 12–26 | Jun 7–21 (transplant) | – |
| Brussels sprouts | Mar 29–Apr 12 | May 24–Jun 7 (transplant) | – |
| Kohlrabi | Apr 26–May 10 | May 24–Jun 7 (transplant) May 24–Jun 7 (sow outdoors) | Jul 4–18 (sowing) |
| Bok choy / Asian greens | – | May 24–Jun 7 (sow outdoors) | Jul 18–Aug 1 (sowing) |
| Arugula | – | May 24–Jun 21 (sow outdoors) | Jul 18–Aug 15 (sowing) |
| Mustard greens | – | May 24–Jun 14 (sow outdoors) | Jul 18–Aug 1 (sowing) |
| Swiss chard | May 10–24 | Jun 7–28 (transplant) Jun 7–Jul 5 (sow outdoors) | – |
| Beet | – | May 24–Jun 21 (sow outdoors) | Jul 4–18 (sowing) |
| Carrot | – | May 31–Jun 28 (sow outdoors) | – |
| Radish | – | May 17–Jun 28 (sow outdoors) | Aug 1–15 (sowing) |
| Turnip | – | May 24–Jun 14 (sow outdoors) | Jul 4–18 (sowing) |
| Parsnip | – | May 31–Jun 21 (sow outdoors) | – |
| Pea (garden, snap, snow) | – | Apr 26–May 24 (sow outdoors) | Jun 20–Jul 4 (sowing) |
| Onion (bulbing) | Mar 29–Apr 12 | May 10–24 (transplant) | – |
| Green onion / scallion | – | May 10–Jun 7 (sow outdoors) | Jul 4–18 (sowing) |
| Leek | Mar 29–Apr 12 | May 24–Jun 7 (transplant) | – |
| Garlic | – | – | Aug 1–29 (sowing) |
| Shallot | – | May 10–24 (transplant) | Aug 1–29 (sowing) |
| Potato | – | May 24–Jun 7 (transplant) | – |
| Sweet potato | – | Jul 12–26 (transplant) | – |
| Sweet corn | – | Jun 28–Jul 12 (sow outdoors) | – |
| Bean, bush (snap) | – | Jun 28–Jul 12 (sow outdoors) | – |
| Bean, pole | – | Jun 28–Jul 12 (sow outdoors) | – |
| Lima bean | – | Jul 5–19 (sow outdoors) | – |
| Southern pea (cowpea, black-eyed pea) | – | Jul 12–Aug 2 (sow outdoors) | – |
| Cucumber | May 24–31 | Jun 28–Jul 12 (transplant) Jun 28–Jul 12 (sow outdoors) | – |
| Summer squash / zucchini | May 24–31 | Jun 28–Jul 12 (transplant) Jun 28–Jul 12 (sow outdoors) | – |
| Winter squash | May 24–31 | Jun 28–Jul 12 (transplant) Jun 28–Jul 12 (sow outdoors) | – |
| Pumpkin | – | Jun 28–Jul 12 (sow outdoors) | – |
| Watermelon | May 24–31 | Jul 5–19 (transplant) Jul 5–19 (sow outdoors) | – |
| Cantaloupe / muskmelon | May 24–31 | Jul 5–19 (transplant) Jul 5–19 (sow outdoors) | – |
| Okra | May 10–24 | Jul 5–19 (transplant) Jul 5–19 (sow outdoors) | – |
| Celery | Mar 29–Apr 12 | Jun 28–Jul 5 (transplant) | – |
| Basil | May 10–24 | Jun 28–Jul 12 (transplant) Jun 28–Jul 12 (sow outdoors) | – |
| Cilantro | – | Jun 7–Jul 5 (sow outdoors) | Jul 18–Aug 1 (sowing) |
| Parsley | Apr 12–26 | Jun 7–21 (transplant) May 31–Jun 21 (sow outdoors) | – |
| Dill | – | Jun 21–Jul 5 (sow outdoors) | Jul 18–Aug 1 (sowing) |
| Sunflower | – | Jun 21–Jul 5 (sow outdoors) | – |
| Asparagus (crowns) | – | May 24–Jun 7 (transplant) | – |
| Rhubarb (crowns) | – | May 24–Jun 7 (transplant) | – |
| Strawberry (plants) | – | May 24–Jun 7 (transplant) | Jul 4–Aug 1 (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: Brian Head, UT (NOAA GHCN-Daily ID USC00420900), elevation 9,770 ft, 8.8 miles from the ZIP's center point. NOAA completeness flag: R (representative, 10+ years).
Nearby stations
| Station | Distance | Last frost (50%) | First frost (50%) |
|---|---|---|---|
| Cedar City 5E, UT | 10 mi | May 23 | Oct 4 |
| Cedar City Muni AP, UT | 10 mi | May 21 | Sep 29 |
| Cedar City, UT | 11 mi | May 4 | Oct 13 |
The average last-frost dates of these stations span 48 days, a rough guide to local variation. See data sources & methods.
Frost questions for 84772
When is the last frost in 84772?
The average (50% chance) last spring freeze of 32°F for ZIP 84772 is June 21. For a more cautious planting date, use July 6, when only 1 year in 10 still sees a later freeze.
When is the first frost in 84772?
The average first fall freeze is September 12. In 1 year in 10 it comes by September 1.
What hardiness zone is 84772?
ZIP 84772 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 84772 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
84761 Parowan 84721 Cedar City 84719 Brian Head 84760 Paragonah 84742 Kanarraville 84720 Cedar City 84762 84757 New Harmony
Other ZIP codes in Iron County
84714 84719 84720 84721 84742 84753 84756 84760 84761 All Iron County frost dates · Utah frost dates
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