Bluebell, UT frost dates
Last spring frostMay 31median date
First fall frostSep 23median date
Growing season115 daysfrost-free
Hardiness zone5bZone 5b
How Bluebell compares
- In 8 years out of 10, the last spring frost in Bluebell falls between May 16 and June 16, a 31-day window. The first fall frost falls between September 6 and October 5.
- The median last frost is 21 days later than the Utah median of May 10.
- Its 115-day growing season is longer than 14% of the 250 Utah places with a regular frost season (state median 148 days).
- The last frost is 30 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 194 nights a year at or below 32°F.
Frost probability
| Chance of frost after | Date |
|---|---|
| 90% (early) | May 16 |
| 50% (median) | May 31 |
| 10% (safe for tender plants) | June 16 |
| Chance of frost before | Date |
|---|---|
| 10% (early) | September 6 |
| 50% (median) | September 23 |
| 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 Bluebell, UT
Bluebell, UT frost dates — last frost May 31, first frost Sep 23, zone 5b. whenisthelastfrost.com
Crop
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Start indoors: Mar 8 to Mar 22Transplant outside: May 3 to May 17
Start indoors: Mar 22 to Apr 5Transplant outside: Jun 14 to Jun 28
Start indoors: Mar 22 to Apr 5Transplant outside: Jun 14 to Jun 28
Start indoors: Apr 5 to Apr 19Transplant outside: Jun 7 to Jun 21
Start indoors: Apr 5 to Apr 19Transplant outside: May 10 to May 24Sow outdoors: May 3 to Jun 7Plant for fall: Jul 29 to Aug 26
Start indoors: Apr 5 to Apr 19Transplant outside: May 3 to May 17Sow outdoors: May 3 to May 17Plant for fall: Jul 15 to Aug 5
Start indoors: Apr 5 to Apr 19Transplant outside: May 17 to May 31Plant for fall: Jun 17 to Jul 8
Start indoors: Apr 5 to Apr 19Transplant outside: May 10 to May 24Plant for fall: Jun 17 to Jul 8
Start indoors: Apr 5 to Apr 19Transplant outside: May 17 to May 31Plant for fall: Jun 17 to Jul 8
Start indoors: Apr 19 to May 3Transplant outside: Jun 21 to Jul 5Sow outdoors: Jun 21 to Jul 5
Start indoors: Apr 19 to May 3Transplant outside: Jun 7 to Jun 21
Sow outdoors: Apr 19 to May 10Plant for fall: Jul 1 to Jul 22
Sow outdoors: Apr 19 to May 10Plant for fall: Jul 29 to Aug 19
Sow outdoors: Apr 26 to Jun 7Plant for fall: Aug 12 to Sep 2
Start indoors: May 3 to May 10Transplant outside: Jun 14 to Jun 21Sow outdoors: Jun 7 to Jun 21Plant for fall: Jul 8 to Jul 22
Start indoors: May 3 to May 10Sow outdoors: Jun 7 to Jun 21Plant for fall: Jul 15 to Jul 29
Start indoors: May 3 to May 10Sow outdoors: Jun 7 to Jun 21
Start indoors: May 3 to May 10Transplant outside: Jun 14 to Jun 28
Sow outdoors: May 10 to Jun 7Plant for fall: Jul 1 to Jul 15
Sow outdoors: May 10 to Jun 7Plant for fall: Jul 15 to Jul 29
Sow outdoors: May 10 to May 31
Sow outdoors: May 17 to Jun 14Plant for fall: Jul 15 to Jul 29
Sow outdoors: May 17 to Jun 7Plant for fall: Jul 29 to Aug 19
Sow outdoors: Jun 7 to Jun 28
Sow outdoors: Jun 7 to Jun 21
Transplant outside: Jun 14 to Jul 5
Plant for fall: Sep 9 to Oct 14
Start indoorsTransplant outsideSow outdoorsPlant for fallMedian frost dates
When to plant vegetables in Bluebell, UT
| Crop | Start indoors | Transplant | Sow outdoors | Fall crop |
|---|---|---|---|---|
| Onions | Mar 8 – Mar 22 | May 3 – May 17 | — | — |
| Peppers | Mar 22 – Apr 5 | Jun 14 – Jun 28 | — | — |
| Eggplant | Mar 22 – Apr 5 | Jun 14 – Jun 28 | — | — |
| Tomatoes | Apr 5 – Apr 19 | Jun 7 – Jun 21 | — | — |
| Lettuce | Apr 5 – Apr 19 | May 10 – May 24 | May 3 – Jun 7 | Jul 29 – Aug 26 |
| Kale | Apr 5 – Apr 19 | May 3 – May 17 | May 3 – May 17 | Jul 15 – Aug 5 |
| Broccoli | Apr 5 – Apr 19 | May 17 – May 31 | — | Jun 17 – Jul 8 |
| Cabbage | Apr 5 – Apr 19 | May 10 – May 24 | — | Jun 17 – Jul 8 |
| Cauliflower | Apr 5 – Apr 19 | May 17 – May 31 | — | Jun 17 – Jul 8 |
| Okra | Apr 19 – May 3 | Jun 21 – Jul 5 | Jun 21 – Jul 5 | — |
| Basil | Apr 19 – May 3 | Jun 7 – Jun 21 | — | — |
| Peas | — | — | Apr 19 – May 10 | Jul 1 – Jul 22 |
| Spinach | — | — | Apr 19 – May 10 | Jul 29 – Aug 19 |
| Radishes | — | — | Apr 26 – Jun 7 | Aug 12 – Sep 2 |
| Cucumbers | May 3 – May 10 | Jun 14 – Jun 21 | Jun 7 – Jun 21 | Jul 8 – Jul 22 |
| Zucchini & Summer Squash | May 3 – May 10 | — | Jun 7 – Jun 21 | Jul 15 – Jul 29 |
| Winter Squash & Pumpkins | May 3 – May 10 | — | Jun 7 – Jun 21 | — |
| Melons & Watermelon | May 3 – May 10 | Jun 14 – Jun 28 | — | — |
| Carrots | — | — | May 10 – Jun 7 | Jul 1 – Jul 15 |
| Beets | — | — | May 10 – Jun 7 | Jul 15 – Jul 29 |
| Potatoes | — | — | May 10 – May 31 | — |
| Swiss Chard | — | — | May 17 – Jun 14 | Jul 15 – Jul 29 |
| Cilantro | — | — | May 17 – Jun 7 | Jul 29 – Aug 19 |
| Green Beans | — | — | Jun 7 – Jun 28 | — |
| Sweet Corn | — | — | Jun 7 – Jun 21 | — |
| Sweet Potatoes | — | Jun 14 – Jul 5 | — | — |
| Garlic | — | — | — | Sep 9 – Oct 14 |
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 Altamont, UT weather station, 7 km away (elevation 6,457 ft (1,968 m)).
Frost dates near Bluebell
- Altamont May 31 · Sep 23
- Altonah May 31 · Sep 23
- Roosevelt May 23 · Sep 22
- Mountain Home May 31 · Sep 23
- Talmage May 31 · Sep 23
- Neola May 19 · Sep 29
- Myton May 7 · Oct 5
- Duchesne May 6 · Oct 5
- Whiterocks May 19 · Sep 29
- Fort Duchesne May 19 · Oct 2
Frequently asked questions
When is the last frost in Bluebell, UT?
The median last spring frost in Bluebell, UT is May 31. There is still about a 10% chance of frost after June 16, so wait until then to plant frost-tender crops like tomatoes and peppers.
When is the first frost in Bluebell, UT?
The median first fall frost is September 23, with about a 10% chance of frost before September 6.
How long is the growing season in Bluebell, UT?
About 115 days between the median last spring frost and first fall frost.
What planting zone is Bluebell, UT?
Bluebell, UT is in USDA hardiness zone 5b.