Frost dates for 84409 — Ogden, UT
Last spring frostApr 21median date
First fall frostOct 23median date
Growing season185 daysfrost-free
Hardiness zone7aZone 7a
How Ogden compares
- In 8 years out of 10, the last spring frost in Ogden falls between April 2 and May 6, a 34-day window. The first fall frost falls between October 8 and November 6.
- The median last frost is 19 days earlier than the Utah median of May 10.
- Its 185-day growing season is longer than 86% of the 250 Utah places with a regular frost season (state median 148 days).
- The last frost is 5 days later than the zone 7a median of Apr 16. Hardiness zones measure winter cold, not season length, so use these dates rather than a zone 7a chart.
- The weather station records an average of 117 nights a year at or below 32°F.
- Compared with Salt Lake City, UT, 61 km away, the last frost here is 4 days earlier than there and the growing season is 9 days longer.
Frost probability
| Chance of frost after | Date |
|---|---|
| 90% (early) | April 2 |
| 50% (median) | April 21 |
| 10% (safe for tender plants) | May 6 |
| Chance of frost before | Date |
|---|---|
| 10% (early) | October 8 |
| 50% (median) | October 23 |
| 90% (late) | November 6 |
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 Ogden, UT
Frost dates for 84409 — Ogden, UT — last frost Apr 21, first frost Oct 23, zone 7a. whenisthelastfrost.com
Crop
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Start indoors: Jan 27 to Feb 10Transplant outside: Mar 24 to Apr 7
Start indoors: Feb 10 to Feb 24Transplant outside: May 5 to May 19
Start indoors: Feb 10 to Feb 24Transplant outside: May 5 to May 19
Start indoors: Feb 24 to Mar 10Transplant outside: Apr 28 to May 12
Start indoors: Feb 24 to Mar 10Transplant outside: Mar 31 to Apr 14Sow outdoors: Mar 24 to Apr 28Plant for fall: Aug 28 to Sep 25
Start indoors: Feb 24 to Mar 10Transplant outside: Mar 24 to Apr 7Sow outdoors: Mar 24 to Apr 7Plant for fall: Aug 14 to Sep 4
Start indoors: Feb 24 to Mar 10Transplant outside: Apr 7 to Apr 21Plant for fall: Jul 17 to Aug 7
Start indoors: Feb 24 to Mar 10Transplant outside: Mar 31 to Apr 14Plant for fall: Jul 17 to Aug 7
Start indoors: Feb 24 to Mar 10Transplant outside: Apr 7 to Apr 21Plant for fall: Jul 17 to Aug 7
Start indoors: Mar 10 to Mar 24Transplant outside: May 12 to May 26Sow outdoors: May 12 to May 26
Start indoors: Mar 10 to Mar 24Transplant outside: Apr 28 to May 12
Sow outdoors: Mar 10 to Mar 31Plant for fall: Jul 31 to Aug 21
Sow outdoors: Mar 10 to Mar 31Plant for fall: Aug 28 to Sep 18
Sow outdoors: Mar 17 to Apr 28Plant for fall: Sep 11 to Oct 2
Start indoors: Mar 24 to Mar 31Transplant outside: May 5 to May 12Sow outdoors: Apr 28 to May 12Plant for fall: Aug 7 to Aug 21
Start indoors: Mar 24 to Mar 31Sow outdoors: Apr 28 to May 12Plant for fall: Aug 14 to Aug 28
Start indoors: Mar 24 to Mar 31Sow outdoors: Apr 28 to May 12
Start indoors: Mar 24 to Mar 31Transplant outside: May 5 to May 19
Sow outdoors: Mar 31 to Apr 28Plant for fall: Jul 31 to Aug 14
Sow outdoors: Mar 31 to Apr 28Plant for fall: Aug 14 to Aug 28
Sow outdoors: Mar 31 to Apr 21
Sow outdoors: Apr 7 to May 5Plant for fall: Aug 14 to Aug 28
Sow outdoors: Apr 7 to Apr 28Plant for fall: Aug 28 to Sep 18
Sow outdoors: Apr 28 to May 19Plant for fall: Aug 7 to Aug 21
Sow outdoors: Apr 28 to May 12
Transplant outside: May 5 to May 26
Plant for fall: Oct 9 to Nov 13
Start indoorsTransplant outsideSow outdoorsPlant for fallMedian frost dates
When to plant vegetables in Ogden, UT
| Crop | Start indoors | Transplant | Sow outdoors | Fall crop |
|---|---|---|---|---|
| Onions | Jan 27 – Feb 10 | Mar 24 – Apr 7 | — | — |
| Peppers | Feb 10 – Feb 24 | May 5 – May 19 | — | — |
| Eggplant | Feb 10 – Feb 24 | May 5 – May 19 | — | — |
| Tomatoes | Feb 24 – Mar 10 | Apr 28 – May 12 | — | — |
| Lettuce | Feb 24 – Mar 10 | Mar 31 – Apr 14 | Mar 24 – Apr 28 | Aug 28 – Sep 25 |
| Kale | Feb 24 – Mar 10 | Mar 24 – Apr 7 | Mar 24 – Apr 7 | Aug 14 – Sep 4 |
| Broccoli | Feb 24 – Mar 10 | Apr 7 – Apr 21 | — | Jul 17 – Aug 7 |
| Cabbage | Feb 24 – Mar 10 | Mar 31 – Apr 14 | — | Jul 17 – Aug 7 |
| Cauliflower | Feb 24 – Mar 10 | Apr 7 – Apr 21 | — | Jul 17 – Aug 7 |
| Okra | Mar 10 – Mar 24 | May 12 – May 26 | May 12 – May 26 | — |
| Basil | Mar 10 – Mar 24 | Apr 28 – May 12 | — | — |
| Peas | — | — | Mar 10 – Mar 31 | Jul 31 – Aug 21 |
| Spinach | — | — | Mar 10 – Mar 31 | Aug 28 – Sep 18 |
| Radishes | — | — | Mar 17 – Apr 28 | Sep 11 – Oct 2 |
| Cucumbers | Mar 24 – Mar 31 | May 5 – May 12 | Apr 28 – May 12 | Aug 7 – Aug 21 |
| Zucchini & Summer Squash | Mar 24 – Mar 31 | — | Apr 28 – May 12 | Aug 14 – Aug 28 |
| Winter Squash & Pumpkins | Mar 24 – Mar 31 | — | Apr 28 – May 12 | — |
| Melons & Watermelon | Mar 24 – Mar 31 | May 5 – May 19 | — | — |
| Carrots | — | — | Mar 31 – Apr 28 | Jul 31 – Aug 14 |
| Beets | — | — | Mar 31 – Apr 28 | Aug 14 – Aug 28 |
| Potatoes | — | — | Mar 31 – Apr 21 | — |
| Swiss Chard | — | — | Apr 7 – May 5 | Aug 14 – Aug 28 |
| Cilantro | — | — | Apr 7 – Apr 28 | Aug 28 – Sep 18 |
| Green Beans | — | — | Apr 28 – May 19 | Aug 7 – Aug 21 |
| Sweet Corn | — | — | Apr 28 – May 12 | — |
| Sweet Potatoes | — | May 5 – May 26 | — | — |
| Garlic | — | — | — | Oct 9 – Nov 13 |
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 Ogden Pioneer Ph, UT weather station, 2 km away (elevation 4,350 ft (1,326 m)).
ZIP codes in Ogden: 84201 84244 84401 84402 84403 84404 84405 84407 84408 84409 84412 84414 84415
Frost dates near Ogden
- Roy Apr 22 · Oct 22
- Eden May 25 · Sep 26
- Hill Afb Apr 29 · Oct 20
- Huntsville Jun 4 · Sep 16
- Willard May 5 · Oct 5
- Hooper Apr 22 · Oct 22
- Layton Apr 29 · Oct 20
- Syracuse Apr 29 · Oct 20
Frequently asked questions
When is the last frost in Ogden, UT?
The median last spring frost in Ogden, UT is April 21. There is still about a 10% chance of frost after May 6, so wait until then to plant frost-tender crops like tomatoes and peppers.
When is the first frost in Ogden, UT?
The median first fall frost is October 23, with about a 10% chance of frost before October 8.
How long is the growing season in Ogden, UT?
About 185 days between the median last spring frost and first fall frost.
What planting zone is Ogden, UT?
Ogden, UT is in USDA hardiness zone 7a.