Frost dates for 84013Cedar Valley, UT
The average last spring frost in Cedar Valley is June 2 and the average first fall frost is September 16, giving a typical growing season of about 103 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- Jun 2
- Average first fall frost
- Sep 16
- Growing season
- 103 days
Safer after Jun 24 (1-in-10 risk)
Possible by Sep 1 (1-in-10 risk)
Last frost typically in 218 days
Frost risk by date
NOAA reports frost dates as probabilities. The middle date is the average (a 50% chance). For spring, the 10% date is a safer planting date: frost after it happens in about 1 year in 10. Light frost (36°F) can damage tender plants; a hard freeze (28°F) kills most annuals.
| Temperature | Last spring: 90% / 50% / 10% chance | First fall: 10% / 50% / 90% chance | Growing season (50%) | Years with at least one |
|---|---|---|---|---|
| Light frost (36°F) | — | — | 76 days | 100% |
| Frost / freeze (32°F) | May 18 · Jun 2 · Jun 24 | Sep 1 · Sep 16 · Sep 29 | 103 days | 100% |
| Hard freeze (28°F) | May 2 · May 19 · Jun 10 | Sep 10 · Sep 26 · Oct 7 | 127 days | 100% |
Planting calendar for Cedar Valley
Planting windows from the University of Maryland Extension calendar, shifted to your average frost dates. Use them as a starting point and adjust for seed packet instructions and local conditions.
| Crop | Task | Window |
|---|---|---|
| Tomatoes | Start seeds indoors | May 2 – Jul 8 |
| Tomatoes | Transplant outdoors | Jun 18 – May 27 |
| Peppers | Start seeds indoors | May 2 – Jun 2 |
| Peppers | Transplant outdoors | Jul 2 – Aug 2 |
| Eggplant | Start seeds indoors | May 19 – Jun 17 |
| Eggplant | Transplant outdoors | Jul 2 – Aug 2 |
| Cucumbers | Sow outdoors | Jul 2 – Jun 6 |
| Summer squash | Sow outdoors | Jun 18 – Aug 2 |
| Winter squash & pumpkins | Sow outdoors | Jul 2 – Aug 2 |
| Snap beans | Sow outdoors | Jun 18 – Jun 29 |
| Sweet corn | Sow outdoors | Jun 18 – May 27 |
| Watermelon & cantaloupe | Sow outdoors | Jul 2 – Aug 2 |
| Okra | Sow outdoors | Jun 25 – Jul 18 |
| Peas | Sow outdoors (spring) | May 2 – Jun 17 |
| Potatoes | Plant outdoors (spring) | May 2 – Jul 2 |
| Onions | Start seeds indoors (spring) | Mar 21 – Apr 17 |
| Onions | Transplant outdoors (spring) | May 19 – Jun 17 |
| Broccoli | Start seeds indoors (spring) | Apr 14 – May 18 |
| Broccoli | Transplant outdoors (spring) | May 19 – Jun 17 |
| Broccoli | Start seeds indoors (fall) | May 17 – May 27 |
| Broccoli | Transplant outdoors (fall) | Jun 16 – Jun 27 |
| Cabbage | Start seeds indoors (spring) | Apr 4 – May 2 |
| Cabbage | Transplant outdoors (spring) | May 2 – Jun 2 |
| Cabbage | Start seeds indoors (fall) | May 7 – Jun 6 |
| Cabbage | Transplant outdoors (fall) | Jun 6 – Jul 7 |
| Leaf lettuce | Sow outdoors (spring) | May 2 – Jul 18 |
| Leaf lettuce | Sow outdoors (fall) | Jun 6 – Jul 23 |
| Spinach | Sow outdoors (spring) | Apr 25 – Jun 8 |
| Spinach | Sow outdoors (fall) | Jun 23 – Jul 28 |
| Radishes | Sow outdoors (spring) | May 2 – Jun 22 |
| Radishes | Sow outdoors (fall) | Jun 6 – Aug 7 |
| Kale | Sow outdoors (spring) | May 19 – Jun 8 |
| Kale | Sow outdoors (fall) | May 30 – Jul 7 |
| Carrots | Sow outdoors (spring) | Jun 2 – Jul 18 |
| Carrots | Sow outdoors (fall) | May 7 – Jun 22 |
| Garlic | Plant outdoors (fall) | Sep 6 – Oct 7 |
Where these dates come from
ZIP code 84013 is matched to the NOAA station Fairfield, UT, 3.8 km away, at 4,880 ft elevation (58 ft lower than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Fairfield, UT (used) | 4,880 ft | Jun 2 | Sep 16 |
| Utah Lake Lehi, UT | 4,505 ft | Apr 30 | Oct 9 |
| Draper-Point Of Mtn, UT | 4,506 ft | Apr 18 | Oct 22 |
| Orem Trtmt Plt, UT | 4,510 ft | Apr 19 | Oct 19 |
Frost dates near Cedar Valley
- Eagle Mountain, UT 84005 · last Jun 2, first Sep 16
- Saratoga Springs, UT 84045 · last Apr 18, first Oct 22
- Lehi, UT 84048 · last Jun 2, first Sep 16
- Herriman, UT 84096 · last May 2, first Oct 16
- Riverton, UT 84065 · last Apr 18, first Oct 22
- American Fork, UT 84003 · last Apr 17, first Oct 25
- Stockton, UT 84071 · last May 2, first Oct 16
- Draper, UT 84020 · last Apr 18, first Oct 22
Frequently asked questions
- When is the last frost in Cedar Valley, UT?
- For ZIP code 84013, the average last spring frost (32°F) is June 2, based on NOAA 1991-2020 climate normals for the Fairfield, UT weather station. There is a 1-in-10 chance of a frost after June 24.
- When is the first frost in Cedar Valley, UT?
- The average first fall frost (32°F) is September 16. There is a 1-in-10 chance of frost by September 1, so tender plants are at risk from that point on.
- How long is the growing season in 84013?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 103 days long.
- Are these frost dates a forecast?
- No. They are 30-year averages and probabilities from NOAA weather station records. Use them to plan, then watch your local forecast before planting tender crops or leaving them uncovered.