Grouse Creek, UT frost dates
Last spring frostJun 4median date
First fall frostSep 17median date
Growing season105 daysfrost-free
Hardiness zone6bZone 6b
How Grouse Creek compares
- In 8 years out of 10, the last spring frost in Grouse Creek falls between May 17 and June 22, a 36-day window. The first fall frost falls between August 31 and October 2.
- The median last frost is 25 days later than the Utah median of May 10.
- Its 105-day growing season is longer than 7% of the 250 Utah places with a regular frost season (state median 148 days).
- The last frost is 43 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 202 nights a year at or below 32°F.
Frost probability
| Chance of frost after | Date |
|---|---|
| 90% (early) | May 17 |
| 50% (median) | June 4 |
| 10% (safe for tender plants) | June 22 |
| Chance of frost before | Date |
|---|---|
| 10% (early) | August 31 |
| 50% (median) | September 17 |
| 90% (late) | October 2 |
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 Grouse Creek, UT
Grouse Creek, UT frost dates — last frost Jun 4, first frost Sep 17, zone 6b. whenisthelastfrost.com
Crop
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Start indoors: Mar 12 to Mar 26Transplant outside: May 7 to May 21
Start indoors: Mar 26 to Apr 9Transplant outside: Jun 18 to Jul 2
Start indoors: Mar 26 to Apr 9Transplant outside: Jun 18 to Jul 2
Start indoors: Apr 9 to Apr 23Transplant outside: Jun 11 to Jun 25
Start indoors: Apr 9 to Apr 23Transplant outside: May 14 to May 28Sow outdoors: May 7 to Jun 11Plant for fall: Jul 23 to Aug 20
Start indoors: Apr 9 to Apr 23Transplant outside: May 7 to May 21Sow outdoors: May 7 to May 21Plant for fall: Jul 9 to Jul 30
Start indoors: Apr 9 to Apr 23Transplant outside: May 21 to Jun 4
Start indoors: Apr 9 to Apr 23Transplant outside: May 14 to May 28
Start indoors: Apr 9 to Apr 23Transplant outside: May 21 to Jun 4
Start indoors: Apr 23 to May 7Transplant outside: Jun 25 to Jul 9Sow outdoors: Jun 25 to Jul 9
Start indoors: Apr 23 to May 7Transplant outside: Jun 11 to Jun 25
Sow outdoors: Apr 23 to May 14Plant for fall: Jun 25 to Jul 16
Sow outdoors: Apr 23 to May 14Plant for fall: Jul 23 to Aug 13
Sow outdoors: Apr 30 to Jun 11Plant for fall: Aug 6 to Aug 27
Start indoors: May 7 to May 14Transplant outside: Jun 18 to Jun 25Sow outdoors: Jun 11 to Jun 25
Start indoors: May 7 to May 14Sow outdoors: Jun 11 to Jun 25
Start indoors: May 7 to May 14Sow outdoors: Jun 11 to Jun 25
Start indoors: May 7 to May 14Transplant outside: Jun 18 to Jul 2
Sow outdoors: May 14 to Jun 11
Sow outdoors: May 14 to Jun 11Plant for fall: Jul 9 to Jul 23
Sow outdoors: May 14 to Jun 4
Sow outdoors: May 21 to Jun 18Plant for fall: Jul 9 to Jul 23
Sow outdoors: May 21 to Jun 11Plant for fall: Jul 23 to Aug 13
Sow outdoors: Jun 11 to Jul 2
Sow outdoors: Jun 11 to Jun 25
Transplant outside: Jun 18 to Jul 9
Plant for fall: Sep 3 to Oct 8
Start indoorsTransplant outsideSow outdoorsPlant for fallMedian frost dates
When to plant vegetables in Grouse Creek, UT
| Crop | Start indoors | Transplant | Sow outdoors | Fall crop |
|---|---|---|---|---|
| Onions | Mar 12 – Mar 26 | May 7 – May 21 | — | — |
| Peppers | Mar 26 – Apr 9 | Jun 18 – Jul 2 | — | — |
| Eggplant | Mar 26 – Apr 9 | Jun 18 – Jul 2 | — | — |
| Tomatoes | Apr 9 – Apr 23 | Jun 11 – Jun 25 | — | — |
| Lettuce | Apr 9 – Apr 23 | May 14 – May 28 | May 7 – Jun 11 | Jul 23 – Aug 20 |
| Kale | Apr 9 – Apr 23 | May 7 – May 21 | May 7 – May 21 | Jul 9 – Jul 30 |
| Broccoli | Apr 9 – Apr 23 | May 21 – Jun 4 | — | — |
| Cabbage | Apr 9 – Apr 23 | May 14 – May 28 | — | — |
| Cauliflower | Apr 9 – Apr 23 | May 21 – Jun 4 | — | — |
| Okra | Apr 23 – May 7 | Jun 25 – Jul 9 | Jun 25 – Jul 9 | — |
| Basil | Apr 23 – May 7 | Jun 11 – Jun 25 | — | — |
| Peas | — | — | Apr 23 – May 14 | Jun 25 – Jul 16 |
| Spinach | — | — | Apr 23 – May 14 | Jul 23 – Aug 13 |
| Radishes | — | — | Apr 30 – Jun 11 | Aug 6 – Aug 27 |
| Cucumbers | May 7 – May 14 | Jun 18 – Jun 25 | Jun 11 – Jun 25 | — |
| Zucchini & Summer Squash | May 7 – May 14 | — | Jun 11 – Jun 25 | — |
| Winter Squash & Pumpkins Warning: Your frost-free season is about 105 days, which is tight for winter squash & pumpkins (100+ days). Choose early varieties and use transplants or row covers. | May 7 – May 14 | — | Jun 11 – Jun 25 | — |
| Melons & Watermelon | May 7 – May 14 | Jun 18 – Jul 2 | — | — |
| Carrots | — | — | May 14 – Jun 11 | — |
| Beets | — | — | May 14 – Jun 11 | Jul 9 – Jul 23 |
| Potatoes | — | — | May 14 – Jun 4 | — |
| Swiss Chard | — | — | May 21 – Jun 18 | Jul 9 – Jul 23 |
| Cilantro | — | — | May 21 – Jun 11 | Jul 23 – Aug 13 |
| Green Beans | — | — | Jun 11 – Jul 2 | — |
| Sweet Corn | — | — | Jun 11 – Jun 25 | — |
| Sweet Potatoes Warning: Your frost-free season is about 105 days, which is tight for sweet potatoes (100+ days). Choose early varieties and use transplants or row covers. | — | Jun 18 – Jul 9 | — | — |
| Garlic | — | — | — | Sep 3 – Oct 8 |
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 Grouse Creek, UT weather station, about 1 km away (elevation 5,322 ft (1,622 m)).
Frost dates near Grouse Creek
- Park Valley May 21 · Oct 2
- Snowville May 17 · Sep 24
- Wendover Apr 18 · Oct 23
- Howell May 17 · Sep 24
- Portage May 22 · Sep 20
- Tremonton Apr 24 · Oct 17
- Garland Apr 24 · Oct 17
- Riverside Apr 24 · Oct 17
- Corinne May 5 · Oct 5
- Plymouth May 3 · Oct 12
Frequently asked questions
When is the last frost in Grouse Creek, UT?
The median last spring frost in Grouse Creek, UT is June 4. There is still about a 10% chance of frost after June 22, so wait until then to plant frost-tender crops like tomatoes and peppers.
When is the first frost in Grouse Creek, UT?
The median first fall frost is September 17, with about a 10% chance of frost before August 31.
How long is the growing season in Grouse Creek, UT?
About 105 days between the median last spring frost and first fall frost.
What planting zone is Grouse Creek, UT?
Grouse Creek, UT is in USDA hardiness zone 6b.