Frost dates for 84321 — Logan, UT
Last spring frostApr 30median date
First fall frostOct 16median date
Growing season169 daysfrost-free
Hardiness zone6aZone 6a
How Logan compares
- In 8 years out of 10, the last spring frost in Logan falls between April 14 and May 19, a 35-day window. The first fall frost falls between October 1 and October 29.
- The median last frost is 10 days earlier than the Utah median of May 10.
- Its 169-day growing season is longer than 71% of the 250 Utah places with a regular frost season (state median 148 days).
- The last frost is typical for zone 6a, where the median is Apr 29.
- The weather station records an average of 136 nights a year at or below 32°F.
- Compared with Ogden, UT, 58 km away, the last frost here is 9 days later than there and the growing season is 16 days shorter.
Frost probability
| Chance of frost after | Date |
|---|---|
| 90% (early) | April 14 |
| 50% (median) | April 30 |
| 10% (safe for tender plants) | May 19 |
| Chance of frost before | Date |
|---|---|
| 10% (early) | October 1 |
| 50% (median) | October 16 |
| 90% (late) | October 29 |
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 Logan, UT
Frost dates for 84321 — Logan, UT — last frost Apr 30, first frost Oct 16, zone 6a. whenisthelastfrost.com
Crop
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Start indoors: Feb 5 to Feb 19Transplant outside: Apr 2 to Apr 16
Start indoors: Feb 19 to Mar 5Transplant outside: May 14 to May 28
Start indoors: Feb 19 to Mar 5Transplant outside: May 14 to May 28
Start indoors: Mar 5 to Mar 19Transplant outside: May 7 to May 21
Start indoors: Mar 5 to Mar 19Transplant outside: Apr 9 to Apr 23Sow outdoors: Apr 2 to May 7Plant for fall: Aug 21 to Sep 18
Start indoors: Mar 5 to Mar 19Transplant outside: Apr 2 to Apr 16Sow outdoors: Apr 2 to Apr 16Plant for fall: Aug 7 to Aug 28
Start indoors: Mar 5 to Mar 19Transplant outside: Apr 16 to Apr 30Plant for fall: Jul 10 to Jul 31
Start indoors: Mar 5 to Mar 19Transplant outside: Apr 9 to Apr 23Plant for fall: Jul 10 to Jul 31
Start indoors: Mar 5 to Mar 19Transplant outside: Apr 16 to Apr 30Plant for fall: Jul 10 to Jul 31
Start indoors: Mar 19 to Apr 2Transplant outside: May 21 to Jun 4Sow outdoors: May 21 to Jun 4
Start indoors: Mar 19 to Apr 2Transplant outside: May 7 to May 21
Sow outdoors: Mar 19 to Apr 9Plant for fall: Jul 24 to Aug 14
Sow outdoors: Mar 19 to Apr 9Plant for fall: Aug 21 to Sep 11
Sow outdoors: Mar 26 to May 7Plant for fall: Sep 4 to Sep 25
Start indoors: Apr 2 to Apr 9Transplant outside: May 14 to May 21Sow outdoors: May 7 to May 21Plant for fall: Jul 31 to Aug 14
Start indoors: Apr 2 to Apr 9Sow outdoors: May 7 to May 21Plant for fall: Aug 7 to Aug 21
Start indoors: Apr 2 to Apr 9Sow outdoors: May 7 to May 21
Start indoors: Apr 2 to Apr 9Transplant outside: May 14 to May 28
Sow outdoors: Apr 9 to May 7Plant for fall: Jul 24 to Aug 7
Sow outdoors: Apr 9 to May 7Plant for fall: Aug 7 to Aug 21
Sow outdoors: Apr 9 to Apr 30
Sow outdoors: Apr 16 to May 14Plant for fall: Aug 7 to Aug 21
Sow outdoors: Apr 16 to May 7Plant for fall: Aug 21 to Sep 11
Sow outdoors: May 7 to May 28Plant for fall: Jul 31 to Aug 14
Sow outdoors: May 7 to May 21
Transplant outside: May 14 to Jun 4
Plant for fall: Oct 2 to Nov 6
Start indoorsTransplant outsideSow outdoorsPlant for fallMedian frost dates
When to plant vegetables in Logan, UT
| Crop | Start indoors | Transplant | Sow outdoors | Fall crop |
|---|---|---|---|---|
| Onions | Feb 5 – Feb 19 | Apr 2 – Apr 16 | — | — |
| Peppers | Feb 19 – Mar 5 | May 14 – May 28 | — | — |
| Eggplant | Feb 19 – Mar 5 | May 14 – May 28 | — | — |
| Tomatoes | Mar 5 – Mar 19 | May 7 – May 21 | — | — |
| Lettuce | Mar 5 – Mar 19 | Apr 9 – Apr 23 | Apr 2 – May 7 | Aug 21 – Sep 18 |
| Kale | Mar 5 – Mar 19 | Apr 2 – Apr 16 | Apr 2 – Apr 16 | Aug 7 – Aug 28 |
| Broccoli | Mar 5 – Mar 19 | Apr 16 – Apr 30 | — | Jul 10 – Jul 31 |
| Cabbage | Mar 5 – Mar 19 | Apr 9 – Apr 23 | — | Jul 10 – Jul 31 |
| Cauliflower | Mar 5 – Mar 19 | Apr 16 – Apr 30 | — | Jul 10 – Jul 31 |
| Okra | Mar 19 – Apr 2 | May 21 – Jun 4 | May 21 – Jun 4 | — |
| Basil | Mar 19 – Apr 2 | May 7 – May 21 | — | — |
| Peas | — | — | Mar 19 – Apr 9 | Jul 24 – Aug 14 |
| Spinach | — | — | Mar 19 – Apr 9 | Aug 21 – Sep 11 |
| Radishes | — | — | Mar 26 – May 7 | Sep 4 – Sep 25 |
| Cucumbers | Apr 2 – Apr 9 | May 14 – May 21 | May 7 – May 21 | Jul 31 – Aug 14 |
| Zucchini & Summer Squash | Apr 2 – Apr 9 | — | May 7 – May 21 | Aug 7 – Aug 21 |
| Winter Squash & Pumpkins | Apr 2 – Apr 9 | — | May 7 – May 21 | — |
| Melons & Watermelon | Apr 2 – Apr 9 | May 14 – May 28 | — | — |
| Carrots | — | — | Apr 9 – May 7 | Jul 24 – Aug 7 |
| Beets | — | — | Apr 9 – May 7 | Aug 7 – Aug 21 |
| Potatoes | — | — | Apr 9 – Apr 30 | — |
| Swiss Chard | — | — | Apr 16 – May 14 | Aug 7 – Aug 21 |
| Cilantro | — | — | Apr 16 – May 7 | Aug 21 – Sep 11 |
| Green Beans | — | — | May 7 – May 28 | Jul 31 – Aug 14 |
| Sweet Corn | — | — | May 7 – May 21 | — |
| Sweet Potatoes | — | May 14 – Jun 4 | — | — |
| Garlic | — | — | — | Oct 2 – Nov 6 |
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 Logan Utah St Univ, UT weather station, 2 km away (elevation 4,790 ft (1,460 m)).
ZIP codes in Logan: 84321 84322 84323 84341
Frost dates near Logan
- Providence Apr 30 · Oct 16
- Hyde Park May 8 · Oct 2
- Millville May 12 · Sep 28
- Smithfield May 8 · Oct 2
- Hyrum May 12 · Sep 28
- Mendon May 12 · Sep 28
- Wellsville May 12 · Sep 28
- Cache Junction May 3 · Oct 12
Frequently asked questions
When is the last frost in Logan, UT?
The median last spring frost in Logan, UT is April 30. There is still about a 10% chance of frost after May 19, so wait until then to plant frost-tender crops like tomatoes and peppers.
When is the first frost in Logan, UT?
The median first fall frost is October 16, with about a 10% chance of frost before October 1.
How long is the growing season in Logan, UT?
About 169 days between the median last spring frost and first fall frost.
What planting zone is Logan, UT?
Logan, UT is in USDA hardiness zone 6a.