Frost dates for 84721 — Cedar City, UT
Last spring frostMay 4median date
First fall frostOct 13median date
Growing season162 daysfrost-free
Hardiness zone6bZone 6b
How Cedar City compares
- In 8 years out of 10, the last spring frost in Cedar City falls between April 19 and May 28, a 39-day window. The first fall frost falls between September 30 and October 28.
- The median last frost is 6 days earlier than the Utah median of May 10.
- Its 162-day growing season is longer than 62% of the 250 Utah places with a regular frost season (state median 148 days).
- The last frost is 12 days later than the zone 6b median of Apr 22. Hardiness zones measure winter cold, not season length, so use these dates rather than a zone 6b chart.
- The weather station records an average of 140 nights a year at or below 32°F.
- Compared with Saint George, UT, 79 km away, the last frost here is 51 days later than there and the growing season is 79 days shorter.
Frost probability
| Chance of frost after | Date |
|---|---|
| 90% (early) | April 19 |
| 50% (median) | May 4 |
| 10% (safe for tender plants) | May 28 |
| Chance of frost before | Date |
|---|---|
| 10% (early) | September 30 |
| 50% (median) | October 13 |
| 90% (late) | October 28 |
Frost here means 32°F (0°C). A median date means half of years have their last frost earlier and half later.
Planting calendar for Cedar City, UT
Frost dates for 84721 — Cedar City, UT — last frost May 4, first frost Oct 13, zone 6b. whenisthelastfrost.com
Crop
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Start indoors: Feb 9 to Feb 23Transplant outside: Apr 6 to Apr 20
Start indoors: Feb 23 to Mar 9Transplant outside: May 18 to Jun 1
Start indoors: Feb 23 to Mar 9Transplant outside: May 18 to Jun 1
Start indoors: Mar 9 to Mar 23Transplant outside: May 11 to May 25
Start indoors: Mar 9 to Mar 23Transplant outside: Apr 13 to Apr 27Sow outdoors: Apr 6 to May 11Plant for fall: Aug 18 to Sep 15
Start indoors: Mar 9 to Mar 23Transplant outside: Apr 6 to Apr 20Sow outdoors: Apr 6 to Apr 20Plant for fall: Aug 4 to Aug 25
Start indoors: Mar 9 to Mar 23Transplant outside: Apr 20 to May 4Plant for fall: Jul 7 to Jul 28
Start indoors: Mar 9 to Mar 23Transplant outside: Apr 13 to Apr 27Plant for fall: Jul 7 to Jul 28
Start indoors: Mar 9 to Mar 23Transplant outside: Apr 20 to May 4Plant for fall: Jul 7 to Jul 28
Start indoors: Mar 23 to Apr 6Transplant outside: May 25 to Jun 8Sow outdoors: May 25 to Jun 8
Start indoors: Mar 23 to Apr 6Transplant outside: May 11 to May 25
Sow outdoors: Mar 23 to Apr 13Plant for fall: Jul 21 to Aug 11
Sow outdoors: Mar 23 to Apr 13Plant for fall: Aug 18 to Sep 8
Sow outdoors: Mar 30 to May 11Plant for fall: Sep 1 to Sep 22
Start indoors: Apr 6 to Apr 13Transplant outside: May 18 to May 25Sow outdoors: May 11 to May 25Plant for fall: Jul 28 to Aug 11
Start indoors: Apr 6 to Apr 13Sow outdoors: May 11 to May 25Plant for fall: Aug 4 to Aug 18
Start indoors: Apr 6 to Apr 13Sow outdoors: May 11 to May 25
Start indoors: Apr 6 to Apr 13Transplant outside: May 18 to Jun 1
Sow outdoors: Apr 13 to May 11Plant for fall: Jul 21 to Aug 4
Sow outdoors: Apr 13 to May 11Plant for fall: Aug 4 to Aug 18
Sow outdoors: Apr 13 to May 4
Sow outdoors: Apr 20 to May 18Plant for fall: Aug 4 to Aug 18
Sow outdoors: Apr 20 to May 11Plant for fall: Aug 18 to Sep 8
Sow outdoors: May 11 to Jun 1Plant for fall: Jul 28 to Aug 11
Sow outdoors: May 11 to May 25
Transplant outside: May 18 to Jun 8
Plant for fall: Sep 29 to Nov 3
Start indoorsTransplant outsideSow outdoorsPlant for fallMedian frost dates
When to plant vegetables in Cedar City, UT
| Crop | Start indoors | Transplant | Sow outdoors | Fall crop |
|---|---|---|---|---|
| Onions | Feb 9 – Feb 23 | Apr 6 – Apr 20 | — | — |
| Peppers | Feb 23 – Mar 9 | May 18 – Jun 1 | — | — |
| Eggplant | Feb 23 – Mar 9 | May 18 – Jun 1 | — | — |
| Tomatoes | Mar 9 – Mar 23 | May 11 – May 25 | — | — |
| Lettuce | Mar 9 – Mar 23 | Apr 13 – Apr 27 | Apr 6 – May 11 | Aug 18 – Sep 15 |
| Kale | Mar 9 – Mar 23 | Apr 6 – Apr 20 | Apr 6 – Apr 20 | Aug 4 – Aug 25 |
| Broccoli | Mar 9 – Mar 23 | Apr 20 – May 4 | — | Jul 7 – Jul 28 |
| Cabbage | Mar 9 – Mar 23 | Apr 13 – Apr 27 | — | Jul 7 – Jul 28 |
| Cauliflower | Mar 9 – Mar 23 | Apr 20 – May 4 | — | Jul 7 – Jul 28 |
| Okra | Mar 23 – Apr 6 | May 25 – Jun 8 | May 25 – Jun 8 | — |
| Basil | Mar 23 – Apr 6 | May 11 – May 25 | — | — |
| Peas | — | — | Mar 23 – Apr 13 | Jul 21 – Aug 11 |
| Spinach | — | — | Mar 23 – Apr 13 | Aug 18 – Sep 8 |
| Radishes | — | — | Mar 30 – May 11 | Sep 1 – Sep 22 |
| Cucumbers | Apr 6 – Apr 13 | May 18 – May 25 | May 11 – May 25 | Jul 28 – Aug 11 |
| Zucchini & Summer Squash | Apr 6 – Apr 13 | — | May 11 – May 25 | Aug 4 – Aug 18 |
| Winter Squash & Pumpkins | Apr 6 – Apr 13 | — | May 11 – May 25 | — |
| Melons & Watermelon | Apr 6 – Apr 13 | May 18 – Jun 1 | — | — |
| Carrots | — | — | Apr 13 – May 11 | Jul 21 – Aug 4 |
| Beets | — | — | Apr 13 – May 11 | Aug 4 – Aug 18 |
| Potatoes | — | — | Apr 13 – May 4 | — |
| Swiss Chard | — | — | Apr 20 – May 18 | Aug 4 – Aug 18 |
| Cilantro | — | — | Apr 20 – May 11 | Aug 18 – Sep 8 |
| Green Beans | — | — | May 11 – Jun 1 | Jul 28 – Aug 11 |
| Sweet Corn | — | — | May 11 – May 25 | — |
| Sweet Potatoes | — | May 18 – Jun 8 | — | — |
| Garlic | — | — | — | Sep 29 – Nov 3 |
Dates come from the median frost dates and common extension-service timing. Adjust for your soil temperature, microclimate and the varieties you grow.
About these dates
Based on 1991–2020 NOAA climate normals for the Cedar City, UT weather station, 2 km away (elevation 6,089 ft (1,856 m)).
ZIP codes in Cedar City: 84720 84721
Frost dates near Cedar City
- Summit Jun 21 · Sep 12
- Kanarraville May 9 · Oct 11
- Brian Head Jun 21 · Sep 12
- Parowan Jun 21 · Sep 12
- New Harmony May 9 · Oct 11
- Paragonah Jun 21 · Sep 12
- Duck Creek Village Jun 1 · Sep 30
- Newcastle May 31 · Sep 20
Frequently asked questions
When is the last frost in Cedar City, UT?
The median last spring frost in Cedar City, UT is May 4. There is still about a 10% chance of frost after May 28, so wait until then to plant frost-tender crops like tomatoes and peppers.
When is the first frost in Cedar City, UT?
The median first fall frost is October 13, with about a 10% chance of frost before September 30.
How long is the growing season in Cedar City, UT?
About 162 days between the median last spring frost and first fall frost.
What planting zone is Cedar City, UT?
Cedar City, UT is in USDA hardiness zone 6b.