Frost dates for 84127 — Salt Lake City, UT
How Salt Lake City compares
- In 8 years out of 10, the last spring frost in Salt Lake City falls between April 7 and May 10, a 33-day window. The first fall frost falls between October 5 and November 1.
- The median last frost is 15 days earlier than the Utah median of May 10.
- Its 176-day growing season is longer than 74% of the 250 Utah places with a regular frost season (state median 148 days).
- The last frost is 20 days later than the zone 7b median of Apr 5. Hardiness zones measure winter cold, not season length, so use these dates rather than a zone 7b chart.
- The weather station records an average of 119 nights a year at or below 32°F.
Frost probability
| Chance of frost after | Date |
|---|---|
| 90% (early) | April 7 |
| 50% (median) | April 25 |
| 10% (safe for tender plants) | May 10 |
| Chance of frost before | Date |
|---|---|
| 10% (early) | October 5 |
| 50% (median) | October 18 |
| 90% (late) | November 1 |
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 Salt Lake City, UT
Frost dates for 84127 — Salt Lake City, UT — last frost Apr 25, first frost Oct 18, zone 7b. whenisthelastfrost.com
When to plant vegetables in Salt Lake City, UT
| Crop | Start indoors | Transplant | Sow outdoors | Fall crop |
|---|---|---|---|---|
| Onions | Jan 31 – Feb 14 | Mar 28 – Apr 11 | — | — |
| Peppers | Feb 14 – Feb 28 | May 9 – May 23 | — | — |
| Eggplant | Feb 14 – Feb 28 | May 9 – May 23 | — | — |
| Tomatoes | Feb 28 – Mar 14 | May 2 – May 16 | — | — |
| Lettuce | Feb 28 – Mar 14 | Apr 4 – Apr 18 | Mar 28 – May 2 | Aug 23 – Sep 20 |
| Kale | Feb 28 – Mar 14 | Mar 28 – Apr 11 | Mar 28 – Apr 11 | Aug 9 – Aug 30 |
| Broccoli | Feb 28 – Mar 14 | Apr 11 – Apr 25 | — | Jul 12 – Aug 2 |
| Cabbage | Feb 28 – Mar 14 | Apr 4 – Apr 18 | — | Jul 12 – Aug 2 |
| Cauliflower | Feb 28 – Mar 14 | Apr 11 – Apr 25 | — | Jul 12 – Aug 2 |
| Okra | Mar 14 – Mar 28 | May 16 – May 30 | May 16 – May 30 | — |
| Basil | Mar 14 – Mar 28 | May 2 – May 16 | — | — |
| Peas | — | — | Mar 14 – Apr 4 | Jul 26 – Aug 16 |
| Spinach | — | — | Mar 14 – Apr 4 | Aug 23 – Sep 13 |
| Radishes | — | — | Mar 21 – May 2 | Sep 6 – Sep 27 |
| Cucumbers | Mar 28 – Apr 4 | May 9 – May 16 | May 2 – May 16 | Aug 2 – Aug 16 |
| Zucchini & Summer Squash | Mar 28 – Apr 4 | — | May 2 – May 16 | Aug 9 – Aug 23 |
| Winter Squash & Pumpkins | Mar 28 – Apr 4 | — | May 2 – May 16 | — |
| Melons & Watermelon | Mar 28 – Apr 4 | May 9 – May 23 | — | — |
| Carrots | — | — | Apr 4 – May 2 | Jul 26 – Aug 9 |
| Beets | — | — | Apr 4 – May 2 | Aug 9 – Aug 23 |
| Potatoes | — | — | Apr 4 – Apr 25 | — |
| Swiss Chard | — | — | Apr 11 – May 9 | Aug 9 – Aug 23 |
| Cilantro | — | — | Apr 11 – May 2 | Aug 23 – Sep 13 |
| Green Beans | — | — | May 2 – May 23 | Aug 2 – Aug 16 |
| Sweet Corn | — | — | May 2 – May 16 | — |
| Sweet Potatoes | — | May 9 – May 30 | — | — |
| Garlic | — | — | — | Oct 4 – Nov 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 Salt Lake City E Bench, UT weather station, 11 km away (elevation 4,849 ft (1,478 m)).
ZIP codes in Salt Lake City: 84101 84102 84103 84104 84105 84106 84107 84108 84109 84110 84111 84112 84113 84114 84115 84116 84117 84118 84121 84122 84123 84124 84125 84126 84127 84129 84130 84131 84132 84133 84134 84136 84138 84139 84141 84143 84145 84147 84148 84150 84151 84152 84157 84158 84165 84170 84171 84180 84184 84189 84190 84199
Frost dates near Salt Lake City
- Midvale Apr 29 · Oct 22
- Sandy Apr 29 · Oct 22
- West Valley City Apr 8 · Oct 31
- West Jordan Apr 18 · Oct 22
- South Jordan Apr 18 · Oct 22
- Magna Apr 3 · Nov 4
- Draper Apr 18 · Oct 22
- Riverton Apr 18 · Oct 22
Frequently asked questions
When is the last frost in Salt Lake City, UT?
The median last spring frost in Salt Lake City, UT is April 25. There is still about a 10% chance of frost after May 10, so wait until then to plant frost-tender crops like tomatoes and peppers.
When is the first frost in Salt Lake City, UT?
The median first fall frost is October 18, with about a 10% chance of frost before October 5.
How long is the growing season in Salt Lake City, UT?
About 176 days between the median last spring frost and first fall frost.
What planting zone is Salt Lake City, UT?
Salt Lake City, UT is in USDA hardiness zone 7b.