Elmo, UT frost dates
Last spring frostMay 27median date
First fall frostSep 26median date
Growing season122 daysfrost-free
Hardiness zone6aZone 6a
How Elmo compares
- In 8 years out of 10, the last spring frost in Elmo falls between May 11 and June 11, a 31-day window. The first fall frost falls between September 11 and October 9.
- The median last frost is 17 days later than the Utah median of May 10.
- Its 122-day growing season is longer than 22% of the 250 Utah places with a regular frost season (state median 148 days).
- The last frost is 28 days later than the zone 6a median of Apr 29. Hardiness zones measure winter cold, not season length, so use these dates rather than a zone 6a chart.
- The weather station records an average of 200 nights a year at or below 32°F.
- Compared with Provo, UT, 118 km away, the last frost here is 39 days later than there and the growing season is 64 days shorter.
Frost probability
| Chance of frost after | Date |
|---|---|
| 90% (early) | May 11 |
| 50% (median) | May 27 |
| 10% (safe for tender plants) | June 11 |
| Chance of frost before | Date |
|---|---|
| 10% (early) | September 11 |
| 50% (median) | September 26 |
| 90% (late) | October 9 |
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 Elmo, UT
Elmo, UT frost dates — last frost May 27, first frost Sep 26, zone 6a. whenisthelastfrost.com
Crop
JFMAMJJASOND
Start indoors: Mar 4 to Mar 18Transplant outside: Apr 29 to May 13
Start indoors: Mar 18 to Apr 1Transplant outside: Jun 10 to Jun 24
Start indoors: Mar 18 to Apr 1Transplant outside: Jun 10 to Jun 24
Start indoors: Apr 1 to Apr 15Transplant outside: Jun 3 to Jun 17
Start indoors: Apr 1 to Apr 15Transplant outside: May 6 to May 20Sow outdoors: Apr 29 to Jun 3Plant for fall: Aug 1 to Aug 29
Start indoors: Apr 1 to Apr 15Transplant outside: Apr 29 to May 13Sow outdoors: Apr 29 to May 13Plant for fall: Jul 18 to Aug 8
Start indoors: Apr 1 to Apr 15Transplant outside: May 13 to May 27Plant for fall: Jun 20 to Jul 11
Start indoors: Apr 1 to Apr 15Transplant outside: May 6 to May 20Plant for fall: Jun 20 to Jul 11
Start indoors: Apr 1 to Apr 15Transplant outside: May 13 to May 27Plant for fall: Jun 20 to Jul 11
Start indoors: Apr 15 to Apr 29Transplant outside: Jun 17 to Jul 1Sow outdoors: Jun 17 to Jul 1
Start indoors: Apr 15 to Apr 29Transplant outside: Jun 3 to Jun 17
Sow outdoors: Apr 15 to May 6Plant for fall: Jul 4 to Jul 25
Sow outdoors: Apr 15 to May 6Plant for fall: Aug 1 to Aug 22
Sow outdoors: Apr 22 to Jun 3Plant for fall: Aug 15 to Sep 5
Start indoors: Apr 29 to May 6Transplant outside: Jun 10 to Jun 17Sow outdoors: Jun 3 to Jun 17Plant for fall: Jul 11 to Jul 25
Start indoors: Apr 29 to May 6Sow outdoors: Jun 3 to Jun 17Plant for fall: Jul 18 to Aug 1
Start indoors: Apr 29 to May 6Sow outdoors: Jun 3 to Jun 17
Start indoors: Apr 29 to May 6Transplant outside: Jun 10 to Jun 24
Sow outdoors: May 6 to Jun 3Plant for fall: Jul 4 to Jul 18
Sow outdoors: May 6 to Jun 3Plant for fall: Jul 18 to Aug 1
Sow outdoors: May 6 to May 27
Sow outdoors: May 13 to Jun 10Plant for fall: Jul 18 to Aug 1
Sow outdoors: May 13 to Jun 3Plant for fall: Aug 1 to Aug 22
Sow outdoors: Jun 3 to Jun 24Plant for fall: Jul 11 to Jul 25
Sow outdoors: Jun 3 to Jun 17
Transplant outside: Jun 10 to Jul 1
Plant for fall: Sep 12 to Oct 17
Start indoorsTransplant outsideSow outdoorsPlant for fallMedian frost dates
When to plant vegetables in Elmo, UT
| Crop | Start indoors | Transplant | Sow outdoors | Fall crop |
|---|---|---|---|---|
| Onions | Mar 4 – Mar 18 | Apr 29 – May 13 | — | — |
| Peppers | Mar 18 – Apr 1 | Jun 10 – Jun 24 | — | — |
| Eggplant | Mar 18 – Apr 1 | Jun 10 – Jun 24 | — | — |
| Tomatoes | Apr 1 – Apr 15 | Jun 3 – Jun 17 | — | — |
| Lettuce | Apr 1 – Apr 15 | May 6 – May 20 | Apr 29 – Jun 3 | Aug 1 – Aug 29 |
| Kale | Apr 1 – Apr 15 | Apr 29 – May 13 | Apr 29 – May 13 | Jul 18 – Aug 8 |
| Broccoli | Apr 1 – Apr 15 | May 13 – May 27 | — | Jun 20 – Jul 11 |
| Cabbage | Apr 1 – Apr 15 | May 6 – May 20 | — | Jun 20 – Jul 11 |
| Cauliflower | Apr 1 – Apr 15 | May 13 – May 27 | — | Jun 20 – Jul 11 |
| Okra | Apr 15 – Apr 29 | Jun 17 – Jul 1 | Jun 17 – Jul 1 | — |
| Basil | Apr 15 – Apr 29 | Jun 3 – Jun 17 | — | — |
| Peas | — | — | Apr 15 – May 6 | Jul 4 – Jul 25 |
| Spinach | — | — | Apr 15 – May 6 | Aug 1 – Aug 22 |
| Radishes | — | — | Apr 22 – Jun 3 | Aug 15 – Sep 5 |
| Cucumbers | Apr 29 – May 6 | Jun 10 – Jun 17 | Jun 3 – Jun 17 | Jul 11 – Jul 25 |
| Zucchini & Summer Squash | Apr 29 – May 6 | — | Jun 3 – Jun 17 | Jul 18 – Aug 1 |
| Winter Squash & Pumpkins | Apr 29 – May 6 | — | Jun 3 – Jun 17 | — |
| Melons & Watermelon | Apr 29 – May 6 | Jun 10 – Jun 24 | — | — |
| Carrots | — | — | May 6 – Jun 3 | Jul 4 – Jul 18 |
| Beets | — | — | May 6 – Jun 3 | Jul 18 – Aug 1 |
| Potatoes | — | — | May 6 – May 27 | — |
| Swiss Chard | — | — | May 13 – Jun 10 | Jul 18 – Aug 1 |
| Cilantro | — | — | May 13 – Jun 3 | Aug 1 – Aug 22 |
| Green Beans | — | — | Jun 3 – Jun 24 | Jul 11 – Jul 25 |
| Sweet Corn | — | — | Jun 3 – Jun 17 | — |
| Sweet Potatoes | — | Jun 10 – Jul 1 | — | — |
| Garlic | — | — | — | Sep 12 – Oct 17 |
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 Wellington 3 E, UT weather station, 19 km away (elevation 5,400 ft (1,646 m)).
Frost dates near Elmo
- Cleveland May 18 · Sep 27
- Huntington May 18 · Sep 27
- Wellington May 27 · Sep 26
- Price May 3 · Oct 12
- Castle Dale May 18 · Sep 27
- Orangeville May 18 · Sep 27
- Helper May 3 · Oct 12
- Kenilworth May 3 · Oct 12
- East Carbon Apr 26 · Oct 25
- Sunnyside Apr 26 · Oct 25
Frequently asked questions
When is the last frost in Elmo, UT?
The median last spring frost in Elmo, UT is May 27. There is still about a 10% chance of frost after June 11, so wait until then to plant frost-tender crops like tomatoes and peppers.
When is the first frost in Elmo, UT?
The median first fall frost is September 26, with about a 10% chance of frost before September 11.
How long is the growing season in Elmo, UT?
About 122 days between the median last spring frost and first fall frost.
What planting zone is Elmo, UT?
Elmo, UT is in USDA hardiness zone 6a.