Dugway, UT frost dates
Last spring frostMay 15median date
First fall frostOct 5median date
Growing season143 daysfrost-free
Hardiness zone6bZone 6b
How Dugway compares
- In 8 years out of 10, the last spring frost in Dugway falls between April 27 and June 4, a 38-day window. The first fall frost falls between September 22 and October 22.
- The median last frost is 5 days later than the Utah median of May 10.
- Its 143-day growing season is longer than 44% of the 250 Utah places with a regular frost season (state median 148 days).
- The last frost is 23 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 154 nights a year at or below 32°F.
- Compared with Lehi, UT, 69 km away, the last frost here is 15 days later than there and the growing season is 19 days shorter.
Frost probability
| Chance of frost after | Date |
|---|---|
| 90% (early) | April 27 |
| 50% (median) | May 15 |
| 10% (safe for tender plants) | June 4 |
| Chance of frost before | Date |
|---|---|
| 10% (early) | September 22 |
| 50% (median) | October 5 |
| 90% (late) | October 22 |
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 Dugway, UT
Dugway, UT frost dates — last frost May 15, first frost Oct 5, zone 6b. whenisthelastfrost.com
Crop
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Start indoors: Feb 20 to Mar 6Transplant outside: Apr 17 to May 1
Start indoors: Mar 6 to Mar 20Transplant outside: May 29 to Jun 12
Start indoors: Mar 6 to Mar 20Transplant outside: May 29 to Jun 12
Start indoors: Mar 20 to Apr 3Transplant outside: May 22 to Jun 5
Start indoors: Mar 20 to Apr 3Transplant outside: Apr 24 to May 8Sow outdoors: Apr 17 to May 22Plant for fall: Aug 10 to Sep 7
Start indoors: Mar 20 to Apr 3Transplant outside: Apr 17 to May 1Sow outdoors: Apr 17 to May 1Plant for fall: Jul 27 to Aug 17
Start indoors: Mar 20 to Apr 3Transplant outside: May 1 to May 15Plant for fall: Jun 29 to Jul 20
Start indoors: Mar 20 to Apr 3Transplant outside: Apr 24 to May 8Plant for fall: Jun 29 to Jul 20
Start indoors: Mar 20 to Apr 3Transplant outside: May 1 to May 15Plant for fall: Jun 29 to Jul 20
Start indoors: Apr 3 to Apr 17Transplant outside: Jun 5 to Jun 19Sow outdoors: Jun 5 to Jun 19
Start indoors: Apr 3 to Apr 17Transplant outside: May 22 to Jun 5
Sow outdoors: Apr 3 to Apr 24Plant for fall: Jul 13 to Aug 3
Sow outdoors: Apr 3 to Apr 24Plant for fall: Aug 10 to Aug 31
Sow outdoors: Apr 10 to May 22Plant for fall: Aug 24 to Sep 14
Start indoors: Apr 17 to Apr 24Transplant outside: May 29 to Jun 5Sow outdoors: May 22 to Jun 5Plant for fall: Jul 20 to Aug 3
Start indoors: Apr 17 to Apr 24Sow outdoors: May 22 to Jun 5Plant for fall: Jul 27 to Aug 10
Start indoors: Apr 17 to Apr 24Sow outdoors: May 22 to Jun 5
Start indoors: Apr 17 to Apr 24Transplant outside: May 29 to Jun 12
Sow outdoors: Apr 24 to May 22Plant for fall: Jul 13 to Jul 27
Sow outdoors: Apr 24 to May 22Plant for fall: Jul 27 to Aug 10
Sow outdoors: Apr 24 to May 15
Sow outdoors: May 1 to May 29Plant for fall: Jul 27 to Aug 10
Sow outdoors: May 1 to May 22Plant for fall: Aug 10 to Aug 31
Sow outdoors: May 22 to Jun 12Plant for fall: Jul 20 to Aug 3
Sow outdoors: May 22 to Jun 5
Transplant outside: May 29 to Jun 19
Plant for fall: Sep 21 to Oct 26
Start indoorsTransplant outsideSow outdoorsPlant for fallMedian frost dates
When to plant vegetables in Dugway, UT
| Crop | Start indoors | Transplant | Sow outdoors | Fall crop |
|---|---|---|---|---|
| Onions | Feb 20 – Mar 6 | Apr 17 – May 1 | — | — |
| Peppers | Mar 6 – Mar 20 | May 29 – Jun 12 | — | — |
| Eggplant | Mar 6 – Mar 20 | May 29 – Jun 12 | — | — |
| Tomatoes | Mar 20 – Apr 3 | May 22 – Jun 5 | — | — |
| Lettuce | Mar 20 – Apr 3 | Apr 24 – May 8 | Apr 17 – May 22 | Aug 10 – Sep 7 |
| Kale | Mar 20 – Apr 3 | Apr 17 – May 1 | Apr 17 – May 1 | Jul 27 – Aug 17 |
| Broccoli | Mar 20 – Apr 3 | May 1 – May 15 | — | Jun 29 – Jul 20 |
| Cabbage | Mar 20 – Apr 3 | Apr 24 – May 8 | — | Jun 29 – Jul 20 |
| Cauliflower | Mar 20 – Apr 3 | May 1 – May 15 | — | Jun 29 – Jul 20 |
| Okra | Apr 3 – Apr 17 | Jun 5 – Jun 19 | Jun 5 – Jun 19 | — |
| Basil | Apr 3 – Apr 17 | May 22 – Jun 5 | — | — |
| Peas | — | — | Apr 3 – Apr 24 | Jul 13 – Aug 3 |
| Spinach | — | — | Apr 3 – Apr 24 | Aug 10 – Aug 31 |
| Radishes | — | — | Apr 10 – May 22 | Aug 24 – Sep 14 |
| Cucumbers | Apr 17 – Apr 24 | May 29 – Jun 5 | May 22 – Jun 5 | Jul 20 – Aug 3 |
| Zucchini & Summer Squash | Apr 17 – Apr 24 | — | May 22 – Jun 5 | Jul 27 – Aug 10 |
| Winter Squash & Pumpkins | Apr 17 – Apr 24 | — | May 22 – Jun 5 | — |
| Melons & Watermelon | Apr 17 – Apr 24 | May 29 – Jun 12 | — | — |
| Carrots | — | — | Apr 24 – May 22 | Jul 13 – Jul 27 |
| Beets | — | — | Apr 24 – May 22 | Jul 27 – Aug 10 |
| Potatoes | — | — | Apr 24 – May 15 | — |
| Swiss Chard | — | — | May 1 – May 29 | Jul 27 – Aug 10 |
| Cilantro | — | — | May 1 – May 22 | Aug 10 – Aug 31 |
| Green Beans | — | — | May 22 – Jun 12 | Jul 20 – Aug 3 |
| Sweet Corn | — | — | May 22 – Jun 5 | — |
| Sweet Potatoes | — | May 29 – Jun 19 | — | — |
| Garlic | — | — | — | Sep 21 – Oct 26 |
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 Johnson Pass, UT weather station, 10 km away (elevation 5,581 ft (1,701 m)).
Frost dates near Dugway
- Rush Valley May 15 · Oct 5
- Vernon Jun 1 · Sep 20
- Stockton May 2 · Oct 16
- Grantsville May 2 · Oct 14
- Tooele May 2 · Oct 16
- Cedar Valley Jun 2 · Sep 16
- Bingham Canyon Apr 18 · Oct 22
- Eureka May 4 · Oct 11
- Eagle Mountain Apr 30 · Oct 9
- Herriman Apr 18 · Oct 22
Frequently asked questions
When is the last frost in Dugway, UT?
The median last spring frost in Dugway, UT is May 15. There is still about a 10% chance of frost after June 4, so wait until then to plant frost-tender crops like tomatoes and peppers.
When is the first frost in Dugway, UT?
The median first fall frost is October 5, with about a 10% chance of frost before September 22.
How long is the growing season in Dugway, UT?
About 143 days between the median last spring frost and first fall frost.
What planting zone is Dugway, UT?
Dugway, UT is in USDA hardiness zone 6b.