Clearfield, UT planting zone & frost dates
Clearfield is in USDA hardiness zone 7a. The last spring frost usually comes around April 29 and the first fall frost around October 20, for a growing season of about 172 days.
Planting calendar for Clearfield
Dates are counted from the average last spring frost (April 29) using the typical timing recommended by U.S. extension services. Warm-season crops go out only after the danger of frost has passed and the soil has warmed.
| Crop | When |
|---|---|
| Tomatoes | Start seeds indoors: Mar 4 – Mar 18 Transplant outdoors: May 6 – May 13 |
| Peppers | Start seeds indoors: Feb 18 – Mar 4 Transplant outdoors: May 13 – May 20 |
| Eggplant | Start seeds indoors: Feb 18 – Mar 4 Transplant outdoors: May 13 – May 20 |
| Broccoli | Start seeds indoors: Feb 18 – Mar 4 Transplant outdoors: Apr 1 – Apr 15 |
| Cabbage | Start seeds indoors: Feb 18 – Mar 4 Transplant outdoors: Apr 1 – Apr 15 |
| Onions (sets) | Plant outdoors: Apr 1 – Apr 15 |
| Peas | Sow outdoors: Mar 18 – Apr 1 |
| Spinach | Sow outdoors: Mar 18 – Apr 1 |
| Lettuce | Sow outdoors: Apr 1 – Apr 15 |
| Carrots | Sow outdoors: Apr 1 – Apr 15 |
| Potatoes | Plant outdoors: Apr 1 – Apr 15 |
| Beans | Sow outdoors: May 6 – May 13 |
| Sweet corn | Sow outdoors: May 6 – May 13 |
| Cucumbers | Sow outdoors: May 6 – May 13 |
| Squash & zucchini | Sow outdoors: May 6 – May 13 |
| Basil | Start seeds indoors: Mar 18 – Apr 1 Transplant outdoors: May 6 – May 13 |
Fall garden: cool-season crops like lettuce, spinach and kale can be sown again around Aug 25 (8 weeks before the average first fall frost on Oct 20).
Frost risk in detail
| 90% chance | 50% chance | 10% chance | |
|---|---|---|---|
| Last 32°F frost in spring is after | Apr 6 | Apr 29 | May 25 |
| First 32°F frost in fall is before | Nov 5 | Oct 20 | Oct 1 |
How to read it: in spring there is a 10% chance of a frost after May 25, so that is a safe date for tender plants. In fall there is a 10% chance of frost before October 1. A hard freeze (28°F) usually ends around April 13.
Hardiness zone by ZIP code in Clearfield
- 84015 zone 7a
- 84016 zone 7a
- 84089 zone 7a
Nearby cities
- Clinton zone 7a, last frost Apr 22
- Syracuse zone 7a, last frost Apr 22
- Roy zone 7a, last frost Apr 22
- West Point zone 7a, last frost Apr 22
- Layton zone 7a, last frost Apr 19
- West Haven zone 7a, last frost Apr 22
- South Ogden zone 6b, last frost Apr 22
- Kaysville zone 7b, last frost Apr 19
Questions
What growing zone is Clearfield, UT?
Clearfield is in USDA Plant Hardiness Zone 7a (average extreme winter low 0°F to 5°F), according to the USDA 2023 map.
When is the last frost in Clearfield?
The average last spring frost (32°F) in Clearfield is April 29. There is still a 10% chance of frost until May 25.
When can I plant tomatoes in Clearfield?
Transplant tomatoes outdoors 1–2 weeks after the average last frost: around May 6 – May 13. Start seeds indoors 6–8 weeks before the last frost.
Frost dates: NOAA U.S. Climate Normals 1991–2020, station Weber Basin Pump Plt 3, UT (USC00429346), 9.5 km (5.9 mi) from the city center, elevation 1494 m, based on 10 years of records. Hardiness zone: USDA Plant Hardiness Zone Map 2023 for the ZIP code nearest to the city center. Microclimates (valleys, hills, cities, coasts) can be warmer or colder: check the local forecast before planting. How we calculate the data.