Frost dates for 84024Echo, UT
The average last spring frost in Echo is May 30 and the average first fall frost is September 18, giving a typical growing season of about 112 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- May 30
- Average first fall frost
- Sep 18
- Growing season
- 112 days
Safer after Jun 16 (1-in-10 risk)
Possible by Sep 4 (1-in-10 risk)
Last frost typically in 215 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) | May 31 · Jun 15 · Jun 30 | Aug 23 · Sep 8 · Sep 22 | 83 days | 100% |
| Frost / freeze (32°F) | May 11 · May 30 · Jun 16 | Sep 4 · Sep 18 · Oct 1 | 112 days | 100% |
| Hard freeze (28°F) | Apr 25 · May 10 · May 31 | Sep 17 · Oct 1 · Oct 14 | 141 days | 100% |
Planting calendar for Echo
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 | Apr 29 – Jul 5 |
| Tomatoes | Transplant outdoors | Jun 15 – May 29 |
| Peppers | Start seeds indoors | Apr 29 – May 30 |
| Peppers | Transplant outdoors | Jun 29 – Jul 30 |
| Eggplant | Start seeds indoors | May 16 – Jun 14 |
| Eggplant | Transplant outdoors | Jun 29 – Jul 30 |
| Cucumbers | Sow outdoors | Jun 29 – Jun 8 |
| Summer squash | Sow outdoors | Jun 15 – Jul 30 |
| Winter squash & pumpkins | Sow outdoors | Jun 29 – Jul 30 |
| Snap beans | Sow outdoors | Jun 15 – Jul 1 |
| Sweet corn | Sow outdoors | Jun 15 – May 29 |
| Watermelon & cantaloupe | Sow outdoors | Jun 29 – Jul 30 |
| Okra | Sow outdoors | Jun 22 – Jul 15 |
| Peas | Sow outdoors (spring) | Apr 29 – Jun 14 |
| Potatoes | Plant outdoors (spring) | Apr 29 – Jun 29 |
| Onions | Start seeds indoors (spring) | Mar 18 – Apr 14 |
| Onions | Transplant outdoors (spring) | May 16 – Jun 14 |
| Broccoli | Start seeds indoors (spring) | Apr 11 – May 15 |
| Broccoli | Transplant outdoors (spring) | May 16 – Jun 14 |
| Broccoli | Start seeds indoors (fall) | May 19 – May 29 |
| Broccoli | Transplant outdoors (fall) | Jun 18 – Jun 29 |
| Cabbage | Start seeds indoors (spring) | Apr 1 – Apr 29 |
| Cabbage | Transplant outdoors (spring) | Apr 29 – May 30 |
| Cabbage | Start seeds indoors (fall) | May 9 – Jun 8 |
| Cabbage | Transplant outdoors (fall) | Jun 8 – Jul 9 |
| Leaf lettuce | Sow outdoors (spring) | Apr 29 – Jul 15 |
| Leaf lettuce | Sow outdoors (fall) | Jun 8 – Jul 25 |
| Spinach | Sow outdoors (spring) | Apr 22 – Jun 5 |
| Spinach | Sow outdoors (fall) | Jun 25 – Jul 30 |
| Radishes | Sow outdoors (spring) | Apr 29 – Jun 19 |
| Radishes | Sow outdoors (fall) | Jun 8 – Aug 9 |
| Kale | Sow outdoors (spring) | May 16 – Jun 5 |
| Kale | Sow outdoors (fall) | Jun 1 – Jul 9 |
| Carrots | Sow outdoors (spring) | May 30 – Jul 15 |
| Carrots | Sow outdoors (fall) | May 9 – Jun 24 |
| Garlic | Plant outdoors (fall) | Sep 8 – Oct 9 |
Where these dates come from
ZIP code 84024 is matched to the NOAA station Echo Dam, UT, 3 km away, at 5,470 ft elevation (11 ft higher than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Echo Dam, UT (used) | 5,470 ft | May 30 | Sep 18 |
| Coalville, UT | 5,550 ft | Jun 7 | Sep 12 |
| Morgan, UT | 5,100 ft | May 25 | Sep 24 |
| Wanship Dam, UT | 5,940 ft | Jun 11 | Sep 12 |
Frost dates near Echo
- Henefer, UT 84033 · last May 30, first Sep 18
- Croydon, UT 84018 · last May 30, first Sep 18
- Coalville, UT 84017 · last May 29, first Sep 25
- Morgan, UT 84050 · last May 25, first Sep 24
- Peoa, UT 84061 · last Jun 11, first Sep 12
- Park City, UT 84098 · last May 29, first Sep 25
- Oakley, UT 84055 · last May 29, first Sep 25
- Salt Lake City, UT 84158 · last May 7, first Oct 14
Frequently asked questions
- When is the last frost in Echo, UT?
- For ZIP code 84024, the average last spring frost (32°F) is May 30, based on NOAA 1991-2020 climate normals for the Echo Dam, UT weather station. There is a 1-in-10 chance of a frost after June 16.
- When is the first frost in Echo, UT?
- The average first fall frost (32°F) is September 18. There is a 1-in-10 chance of frost by September 4, so tender plants are at risk from that point on.
- How long is the growing season in 84024?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 112 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.