Modena, UT frost dates
Last spring frostMay 20median date
First fall frostOct 3median date
Growing season136 daysfrost-free
Hardiness zone7aZone 7a
How Modena compares
- In 8 years out of 10, the last spring frost in Modena falls between May 2 and June 6, a 35-day window. The first fall frost falls between September 22 and October 16.
- The median last frost is 10 days later than the Utah median of May 10.
- Its 136-day growing season is longer than 39% of the 250 Utah places with a regular frost season (state median 148 days).
- The last frost is 34 days later than the zone 7a median of Apr 16. Hardiness zones measure winter cold, not season length, so use these dates rather than a zone 7a chart.
- The weather station records an average of 184 nights a year at or below 32°F.
- Compared with Saint George, UT, 84 km away, the last frost here is 67 days later than there and the growing season is 105 days shorter.
Frost probability
| Chance of frost after | Date |
|---|---|
| 90% (early) | May 2 |
| 50% (median) | May 20 |
| 10% (safe for tender plants) | June 6 |
| Chance of frost before | Date |
|---|---|
| 10% (early) | September 22 |
| 50% (median) | October 3 |
| 90% (late) | October 16 |
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 Modena, UT
Modena, UT frost dates — last frost May 20, first frost Oct 3, zone 7a. whenisthelastfrost.com
Crop
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Start indoors: Feb 25 to Mar 11Transplant outside: Apr 22 to May 6
Start indoors: Mar 11 to Mar 25Transplant outside: Jun 3 to Jun 17
Start indoors: Mar 11 to Mar 25Transplant outside: Jun 3 to Jun 17
Start indoors: Mar 25 to Apr 8Transplant outside: May 27 to Jun 10
Start indoors: Mar 25 to Apr 8Transplant outside: Apr 29 to May 13Sow outdoors: Apr 22 to May 27Plant for fall: Aug 8 to Sep 5
Start indoors: Mar 25 to Apr 8Transplant outside: Apr 22 to May 6Sow outdoors: Apr 22 to May 6Plant for fall: Jul 25 to Aug 15
Start indoors: Mar 25 to Apr 8Transplant outside: May 6 to May 20Plant for fall: Jun 27 to Jul 18
Start indoors: Mar 25 to Apr 8Transplant outside: Apr 29 to May 13Plant for fall: Jun 27 to Jul 18
Start indoors: Mar 25 to Apr 8Transplant outside: May 6 to May 20Plant for fall: Jun 27 to Jul 18
Start indoors: Apr 8 to Apr 22Transplant outside: Jun 10 to Jun 24Sow outdoors: Jun 10 to Jun 24
Start indoors: Apr 8 to Apr 22Transplant outside: May 27 to Jun 10
Sow outdoors: Apr 8 to Apr 29Plant for fall: Jul 11 to Aug 1
Sow outdoors: Apr 8 to Apr 29Plant for fall: Aug 8 to Aug 29
Sow outdoors: Apr 15 to May 27Plant for fall: Aug 22 to Sep 12
Start indoors: Apr 22 to Apr 29Transplant outside: Jun 3 to Jun 10Sow outdoors: May 27 to Jun 10Plant for fall: Jul 18 to Aug 1
Start indoors: Apr 22 to Apr 29Sow outdoors: May 27 to Jun 10Plant for fall: Jul 25 to Aug 8
Start indoors: Apr 22 to Apr 29Sow outdoors: May 27 to Jun 10
Start indoors: Apr 22 to Apr 29Transplant outside: Jun 3 to Jun 17
Sow outdoors: Apr 29 to May 27Plant for fall: Jul 11 to Jul 25
Sow outdoors: Apr 29 to May 27Plant for fall: Jul 25 to Aug 8
Sow outdoors: Apr 29 to May 20
Sow outdoors: May 6 to Jun 3Plant for fall: Jul 25 to Aug 8
Sow outdoors: May 6 to May 27Plant for fall: Aug 8 to Aug 29
Sow outdoors: May 27 to Jun 17Plant for fall: Jul 18 to Aug 1
Sow outdoors: May 27 to Jun 10
Transplant outside: Jun 3 to Jun 24
Plant for fall: Sep 19 to Oct 24
Start indoorsTransplant outsideSow outdoorsPlant for fallMedian frost dates
When to plant vegetables in Modena, UT
| Crop | Start indoors | Transplant | Sow outdoors | Fall crop |
|---|---|---|---|---|
| Onions | Feb 25 – Mar 11 | Apr 22 – May 6 | — | — |
| Peppers | Mar 11 – Mar 25 | Jun 3 – Jun 17 | — | — |
| Eggplant | Mar 11 – Mar 25 | Jun 3 – Jun 17 | — | — |
| Tomatoes | Mar 25 – Apr 8 | May 27 – Jun 10 | — | — |
| Lettuce | Mar 25 – Apr 8 | Apr 29 – May 13 | Apr 22 – May 27 | Aug 8 – Sep 5 |
| Kale | Mar 25 – Apr 8 | Apr 22 – May 6 | Apr 22 – May 6 | Jul 25 – Aug 15 |
| Broccoli | Mar 25 – Apr 8 | May 6 – May 20 | — | Jun 27 – Jul 18 |
| Cabbage | Mar 25 – Apr 8 | Apr 29 – May 13 | — | Jun 27 – Jul 18 |
| Cauliflower | Mar 25 – Apr 8 | May 6 – May 20 | — | Jun 27 – Jul 18 |
| Okra | Apr 8 – Apr 22 | Jun 10 – Jun 24 | Jun 10 – Jun 24 | — |
| Basil | Apr 8 – Apr 22 | May 27 – Jun 10 | — | — |
| Peas | — | — | Apr 8 – Apr 29 | Jul 11 – Aug 1 |
| Spinach | — | — | Apr 8 – Apr 29 | Aug 8 – Aug 29 |
| Radishes | — | — | Apr 15 – May 27 | Aug 22 – Sep 12 |
| Cucumbers | Apr 22 – Apr 29 | Jun 3 – Jun 10 | May 27 – Jun 10 | Jul 18 – Aug 1 |
| Zucchini & Summer Squash | Apr 22 – Apr 29 | — | May 27 – Jun 10 | Jul 25 – Aug 8 |
| Winter Squash & Pumpkins | Apr 22 – Apr 29 | — | May 27 – Jun 10 | — |
| Melons & Watermelon | Apr 22 – Apr 29 | Jun 3 – Jun 17 | — | — |
| Carrots | — | — | Apr 29 – May 27 | Jul 11 – Jul 25 |
| Beets | — | — | Apr 29 – May 27 | Jul 25 – Aug 8 |
| Potatoes | — | — | Apr 29 – May 20 | — |
| Swiss Chard | — | — | May 6 – Jun 3 | Jul 25 – Aug 8 |
| Cilantro | — | — | May 6 – May 27 | Aug 8 – Aug 29 |
| Green Beans | — | — | May 27 – Jun 17 | Jul 18 – Aug 1 |
| Sweet Corn | — | — | May 27 – Jun 10 | — |
| Sweet Potatoes | — | Jun 3 – Jun 24 | — | — |
| Garlic | — | — | — | Sep 19 – Oct 24 |
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 Modena, UT weather station, about 1 km away (elevation 5,459 ft (1,664 m)).
Frost dates near Modena
- Beryl May 31 · Sep 20
- Newcastle May 31 · Sep 20
- Enterprise May 21 · Oct 2
- Central Apr 9 · Nov 5
- Veyo Apr 9 · Nov 5
- Pine Valley Apr 9 · Nov 5
- Gunlock Apr 9 · Nov 5
- Dammeron Valley Apr 9 · Nov 5
- New Harmony May 9 · Oct 11
- Kanarraville May 9 · Oct 11
Frequently asked questions
When is the last frost in Modena, UT?
The median last spring frost in Modena, UT is May 20. There is still about a 10% chance of frost after June 6, so wait until then to plant frost-tender crops like tomatoes and peppers.
When is the first frost in Modena, UT?
The median first fall frost is October 3, with about a 10% chance of frost before September 22.
How long is the growing season in Modena, UT?
About 136 days between the median last spring frost and first fall frost.
What planting zone is Modena, UT?
Modena, UT is in USDA hardiness zone 7a.