Milford, UT frost dates
Last spring frostMay 10median date
First fall frostOct 2median date
Growing season145 daysfrost-free
Hardiness zone6aZone 6a
How Milford compares
- In 8 years out of 10, the last spring frost in Milford falls between April 25 and June 1, a 37-day window. The first fall frost falls between September 20 and October 15.
- The median last frost is the same as the Utah median of May 10.
- Its 145-day growing season is longer than 45% of the 250 Utah places with a regular frost season (state median 148 days).
- The last frost is 11 days later than the zone 6a median of Apr 29. Hardiness zones measure winter cold, not season length, so use these dates rather than a zone 6a chart.
- The weather station records an average of 164 nights a year at or below 32°F.
Frost probability
| Chance of frost after | Date |
|---|---|
| 90% (early) | April 25 |
| 50% (median) | May 10 |
| 10% (safe for tender plants) | June 1 |
| Chance of frost before | Date |
|---|---|
| 10% (early) | September 20 |
| 50% (median) | October 2 |
| 90% (late) | October 15 |
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 Milford, UT
Milford, UT frost dates — last frost May 10, first frost Oct 2, zone 6a. whenisthelastfrost.com
Crop
JFMAMJJASOND
Start indoors: Feb 15 to Mar 1Transplant outside: Apr 12 to Apr 26
Start indoors: Mar 1 to Mar 15Transplant outside: May 24 to Jun 7
Start indoors: Mar 1 to Mar 15Transplant outside: May 24 to Jun 7
Start indoors: Mar 15 to Mar 29Transplant outside: May 17 to May 31
Start indoors: Mar 15 to Mar 29Transplant outside: Apr 19 to May 3Sow outdoors: Apr 12 to May 17Plant for fall: Aug 7 to Sep 4
Start indoors: Mar 15 to Mar 29Transplant outside: Apr 12 to Apr 26Sow outdoors: Apr 12 to Apr 26Plant for fall: Jul 24 to Aug 14
Start indoors: Mar 15 to Mar 29Transplant outside: Apr 26 to May 10Plant for fall: Jun 26 to Jul 17
Start indoors: Mar 15 to Mar 29Transplant outside: Apr 19 to May 3Plant for fall: Jun 26 to Jul 17
Start indoors: Mar 15 to Mar 29Transplant outside: Apr 26 to May 10Plant for fall: Jun 26 to Jul 17
Start indoors: Mar 29 to Apr 12Transplant outside: May 31 to Jun 14Sow outdoors: May 31 to Jun 14
Start indoors: Mar 29 to Apr 12Transplant outside: May 17 to May 31
Sow outdoors: Mar 29 to Apr 19Plant for fall: Jul 10 to Jul 31
Sow outdoors: Mar 29 to Apr 19Plant for fall: Aug 7 to Aug 28
Sow outdoors: Apr 5 to May 17Plant for fall: Aug 21 to Sep 11
Start indoors: Apr 12 to Apr 19Transplant outside: May 24 to May 31Sow outdoors: May 17 to May 31Plant for fall: Jul 17 to Jul 31
Start indoors: Apr 12 to Apr 19Sow outdoors: May 17 to May 31Plant for fall: Jul 24 to Aug 7
Start indoors: Apr 12 to Apr 19Sow outdoors: May 17 to May 31
Start indoors: Apr 12 to Apr 19Transplant outside: May 24 to Jun 7
Sow outdoors: Apr 19 to May 17Plant for fall: Jul 10 to Jul 24
Sow outdoors: Apr 19 to May 17Plant for fall: Jul 24 to Aug 7
Sow outdoors: Apr 19 to May 10
Sow outdoors: Apr 26 to May 24Plant for fall: Jul 24 to Aug 7
Sow outdoors: Apr 26 to May 17Plant for fall: Aug 7 to Aug 28
Sow outdoors: May 17 to Jun 7Plant for fall: Jul 17 to Jul 31
Sow outdoors: May 17 to May 31
Transplant outside: May 24 to Jun 14
Plant for fall: Sep 18 to Oct 23
Start indoorsTransplant outsideSow outdoorsPlant for fallMedian frost dates
When to plant vegetables in Milford, UT
| Crop | Start indoors | Transplant | Sow outdoors | Fall crop |
|---|---|---|---|---|
| Onions | Feb 15 – Mar 1 | Apr 12 – Apr 26 | — | — |
| Peppers | Mar 1 – Mar 15 | May 24 – Jun 7 | — | — |
| Eggplant | Mar 1 – Mar 15 | May 24 – Jun 7 | — | — |
| Tomatoes | Mar 15 – Mar 29 | May 17 – May 31 | — | — |
| Lettuce | Mar 15 – Mar 29 | Apr 19 – May 3 | Apr 12 – May 17 | Aug 7 – Sep 4 |
| Kale | Mar 15 – Mar 29 | Apr 12 – Apr 26 | Apr 12 – Apr 26 | Jul 24 – Aug 14 |
| Broccoli | Mar 15 – Mar 29 | Apr 26 – May 10 | — | Jun 26 – Jul 17 |
| Cabbage | Mar 15 – Mar 29 | Apr 19 – May 3 | — | Jun 26 – Jul 17 |
| Cauliflower | Mar 15 – Mar 29 | Apr 26 – May 10 | — | Jun 26 – Jul 17 |
| Okra | Mar 29 – Apr 12 | May 31 – Jun 14 | May 31 – Jun 14 | — |
| Basil | Mar 29 – Apr 12 | May 17 – May 31 | — | — |
| Peas | — | — | Mar 29 – Apr 19 | Jul 10 – Jul 31 |
| Spinach | — | — | Mar 29 – Apr 19 | Aug 7 – Aug 28 |
| Radishes | — | — | Apr 5 – May 17 | Aug 21 – Sep 11 |
| Cucumbers | Apr 12 – Apr 19 | May 24 – May 31 | May 17 – May 31 | Jul 17 – Jul 31 |
| Zucchini & Summer Squash | Apr 12 – Apr 19 | — | May 17 – May 31 | Jul 24 – Aug 7 |
| Winter Squash & Pumpkins | Apr 12 – Apr 19 | — | May 17 – May 31 | — |
| Melons & Watermelon | Apr 12 – Apr 19 | May 24 – Jun 7 | — | — |
| Carrots | — | — | Apr 19 – May 17 | Jul 10 – Jul 24 |
| Beets | — | — | Apr 19 – May 17 | Jul 24 – Aug 7 |
| Potatoes | — | — | Apr 19 – May 10 | — |
| Swiss Chard | — | — | Apr 26 – May 24 | Jul 24 – Aug 7 |
| Cilantro | — | — | Apr 26 – May 17 | Aug 7 – Aug 28 |
| Green Beans | — | — | May 17 – Jun 7 | Jul 17 – Jul 31 |
| Sweet Corn | — | — | May 17 – May 31 | — |
| Sweet Potatoes | — | May 24 – Jun 14 | — | — |
| Garlic | — | — | — | Sep 18 – Oct 23 |
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 Milford, UT weather station, 8 km away (elevation 5,010 ft (1,527 m)).
Frost dates near Milford
- Minersville May 10 · Oct 2
- Greenville Jun 1 · Sep 28
- Beaver Jun 1 · Sep 28
- Paragonah Jun 21 · Sep 12
- Parowan Jun 21 · Sep 12
- Summit Jun 21 · Sep 12
- Sevier Jun 4 · Sep 21
- Marysvale May 24 · Sep 25
- Junction May 23 · Sep 27
- Circleville May 23 · Sep 27
Frequently asked questions
When is the last frost in Milford, UT?
The median last spring frost in Milford, UT is May 10. There is still about a 10% chance of frost after June 1, so wait until then to plant frost-tender crops like tomatoes and peppers.
When is the first frost in Milford, UT?
The median first fall frost is October 2, with about a 10% chance of frost before September 20.
How long is the growing season in Milford, UT?
About 145 days between the median last spring frost and first fall frost.
What planting zone is Milford, UT?
Milford, UT is in USDA hardiness zone 6a.