Jensen, UT frost dates
Last spring frostMay 20median date
First fall frostSep 25median date
Growing season128 daysfrost-free
Hardiness zone5bZone 5b
How Jensen compares
- In 8 years out of 10, the last spring frost in Jensen falls between May 5 and June 5, a 31-day window. The first fall frost falls between September 11 and October 5.
- The median last frost is 10 days later than the Utah median of May 10.
- Its 128-day growing season is longer than 34% of the 250 Utah places with a regular frost season (state median 148 days).
- The last frost is 19 days later than the zone 5b median of May 1. Hardiness zones measure winter cold, not season length, so use these dates rather than a zone 5b chart.
- The weather station records an average of 185 nights a year at or below 32°F.
Frost probability
| Chance of frost after | Date |
|---|---|
| 90% (early) | May 5 |
| 50% (median) | May 20 |
| 10% (safe for tender plants) | June 5 |
| Chance of frost before | Date |
|---|---|
| 10% (early) | September 11 |
| 50% (median) | September 25 |
| 90% (late) | October 5 |
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 Jensen, UT
Jensen, UT frost dates — last frost May 20, first frost Sep 25, zone 5b. whenisthelastfrost.com
Crop
JFMAMJJASOND
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: Jul 31 to Aug 28
Start indoors: Mar 25 to Apr 8Transplant outside: Apr 22 to May 6Sow outdoors: Apr 22 to May 6Plant for fall: Jul 17 to Aug 7
Start indoors: Mar 25 to Apr 8Transplant outside: May 6 to May 20Plant for fall: Jun 19 to Jul 10
Start indoors: Mar 25 to Apr 8Transplant outside: Apr 29 to May 13Plant for fall: Jun 19 to Jul 10
Start indoors: Mar 25 to Apr 8Transplant outside: May 6 to May 20Plant for fall: Jun 19 to Jul 10
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 3 to Jul 24
Sow outdoors: Apr 8 to Apr 29Plant for fall: Jul 31 to Aug 21
Sow outdoors: Apr 15 to May 27Plant for fall: Aug 14 to Sep 4
Start indoors: Apr 22 to Apr 29Transplant outside: Jun 3 to Jun 10Sow outdoors: May 27 to Jun 10Plant for fall: Jul 10 to Jul 24
Start indoors: Apr 22 to Apr 29Sow outdoors: May 27 to Jun 10Plant for fall: Jul 17 to Jul 31
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 3 to Jul 17
Sow outdoors: Apr 29 to May 27Plant for fall: Jul 17 to Jul 31
Sow outdoors: Apr 29 to May 20
Sow outdoors: May 6 to Jun 3Plant for fall: Jul 17 to Jul 31
Sow outdoors: May 6 to May 27Plant for fall: Jul 31 to Aug 21
Sow outdoors: May 27 to Jun 17Plant for fall: Jul 10 to Jul 24
Sow outdoors: May 27 to Jun 10
Transplant outside: Jun 3 to Jun 24
Plant for fall: Sep 11 to Oct 16
Start indoorsTransplant outsideSow outdoorsPlant for fallMedian frost dates
When to plant vegetables in Jensen, 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 | Jul 31 – Aug 28 |
| Kale | Mar 25 – Apr 8 | Apr 22 – May 6 | Apr 22 – May 6 | Jul 17 – Aug 7 |
| Broccoli | Mar 25 – Apr 8 | May 6 – May 20 | — | Jun 19 – Jul 10 |
| Cabbage | Mar 25 – Apr 8 | Apr 29 – May 13 | — | Jun 19 – Jul 10 |
| Cauliflower | Mar 25 – Apr 8 | May 6 – May 20 | — | Jun 19 – Jul 10 |
| 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 3 – Jul 24 |
| Spinach | — | — | Apr 8 – Apr 29 | Jul 31 – Aug 21 |
| Radishes | — | — | Apr 15 – May 27 | Aug 14 – Sep 4 |
| Cucumbers | Apr 22 – Apr 29 | Jun 3 – Jun 10 | May 27 – Jun 10 | Jul 10 – Jul 24 |
| Zucchini & Summer Squash | Apr 22 – Apr 29 | — | May 27 – Jun 10 | Jul 17 – Jul 31 |
| 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 3 – Jul 17 |
| Beets | — | — | Apr 29 – May 27 | Jul 17 – Jul 31 |
| Potatoes | — | — | Apr 29 – May 20 | — |
| Swiss Chard | — | — | May 6 – Jun 3 | Jul 17 – Jul 31 |
| Cilantro | — | — | May 6 – May 27 | Jul 31 – Aug 21 |
| Green Beans | — | — | May 27 – Jun 17 | Jul 10 – Jul 24 |
| Sweet Corn | — | — | May 27 – Jun 10 | — |
| Sweet Potatoes | — | Jun 3 – Jun 24 | — | — |
| Garlic | — | — | — | Sep 11 – Oct 16 |
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 Jensen, UT weather station, 2 km away (elevation 4,738 ft (1,444 m)).
Frost dates near Jensen
- Vernal May 7 · Oct 6
- Randlett May 2 · Oct 3
- Lapoint May 19 · Oct 2
- Tridell May 19 · Oct 2
- Bonanza May 12 · Oct 5
- Fort Duchesne May 19 · Oct 2
- Whiterocks May 19 · Sep 29
- Roosevelt May 23 · Sep 22
- Neola May 19 · Sep 29
- Dutch John May 26 · Sep 23
Frequently asked questions
When is the last frost in Jensen, UT?
The median last spring frost in Jensen, UT is May 20. There is still about a 10% chance of frost after June 5, so wait until then to plant frost-tender crops like tomatoes and peppers.
When is the first frost in Jensen, UT?
The median first fall frost is September 25, with about a 10% chance of frost before September 11.
How long is the growing season in Jensen, UT?
About 128 days between the median last spring frost and first fall frost.
What planting zone is Jensen, UT?
Jensen, UT is in USDA hardiness zone 5b.