Frost dates for 84542Wellington, UT
The average last spring frost in Wellington is May 27 and the average first fall frost is September 26, giving a typical growing season of about 122 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- May 27
- Average first fall frost
- Sep 26
- Growing season
- 122 days
Safer after Jun 11 (1-in-10 risk)
Possible by Sep 11 (1-in-10 risk)
Last frost typically in 212 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 27 · Jun 12 · Jun 29 | Sep 4 · Sep 17 · Sep 28 | 97 days | 100% |
| Frost / freeze (32°F) | May 11 · May 27 · Jun 11 | Sep 11 · Sep 26 · Oct 9 | 122 days | 100% |
| Hard freeze (28°F) | Apr 25 · May 9 · May 27 | Sep 23 · Oct 5 · Oct 22 | 149 days | 100% |
Planting calendar for Wellington
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 26 – Jul 2 |
| Tomatoes | Transplant outdoors | Jun 12 – Jun 6 |
| Peppers | Start seeds indoors | Apr 26 – May 27 |
| Peppers | Transplant outdoors | Jun 26 – Jul 27 |
| Eggplant | Start seeds indoors | May 13 – Jun 11 |
| Eggplant | Transplant outdoors | Jun 26 – Jul 27 |
| Cucumbers | Sow outdoors | Jun 26 – Jun 16 |
| Summer squash | Sow outdoors | Jun 12 – Jul 27 |
| Winter squash & pumpkins | Sow outdoors | Jun 26 – Jul 27 |
| Snap beans | Sow outdoors | Jun 12 – Jul 9 |
| Sweet corn | Sow outdoors | Jun 12 – Jun 6 |
| Watermelon & cantaloupe | Sow outdoors | Jun 26 – Jul 27 |
| Okra | Sow outdoors | Jun 19 – Jul 12 |
| Peas | Sow outdoors (spring) | Apr 26 – Jun 11 |
| Potatoes | Plant outdoors (spring) | Apr 26 – Jun 26 |
| Onions | Start seeds indoors (spring) | Mar 15 – Apr 11 |
| Onions | Transplant outdoors (spring) | May 13 – Jun 11 |
| Broccoli | Start seeds indoors (spring) | Apr 8 – May 12 |
| Broccoli | Transplant outdoors (spring) | May 13 – Jun 11 |
| Broccoli | Start seeds indoors (fall) | May 27 – Jun 6 |
| Broccoli | Transplant outdoors (fall) | Jun 26 – Jul 7 |
| Cabbage | Start seeds indoors (spring) | Mar 29 – Apr 26 |
| Cabbage | Transplant outdoors (spring) | Apr 26 – May 27 |
| Cabbage | Start seeds indoors (fall) | May 17 – Jun 16 |
| Cabbage | Transplant outdoors (fall) | Jun 16 – Jul 17 |
| Leaf lettuce | Sow outdoors (spring) | Apr 26 – Jul 12 |
| Leaf lettuce | Sow outdoors (fall) | Jun 16 – Aug 2 |
| Spinach | Sow outdoors (spring) | Apr 19 – Jun 2 |
| Spinach | Sow outdoors (fall) | Jul 3 – Aug 7 |
| Radishes | Sow outdoors (spring) | Apr 26 – Jun 16 |
| Radishes | Sow outdoors (fall) | Jun 16 – Aug 17 |
| Kale | Sow outdoors (spring) | May 13 – Jun 2 |
| Kale | Sow outdoors (fall) | Jun 9 – Jul 17 |
| Carrots | Sow outdoors (spring) | May 27 – Jul 12 |
| Carrots | Sow outdoors (fall) | May 17 – Jul 2 |
| Garlic | Plant outdoors (fall) | Sep 16 – Oct 17 |
Where these dates come from
ZIP code 84542 is matched to the NOAA station Wellington 3 E, UT, 4.2 km away, at 5,400 ft elevation (13 ft lower than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Wellington 3 E, UT (used) | 5,400 ft | May 27 | Sep 26 |
| Price Carbon Co Ap, UT | 5,921 ft | May 3 | Oct 12 |
| Sunnyside City, UT | 6,511 ft | Apr 26 | Oct 25 |
| Sunnyside City Ctr, UT | 6,530 ft | May 5 | Oct 15 |
Frost dates near Wellington
- Price, UT 84501 · last May 3, first Oct 12
- Elmo, UT 84521 · last May 18, first Sep 27
- Kenilworth, UT 84529 · last May 3, first Oct 12
- Helper, UT 84526 · last May 3, first Oct 12
- Cleveland, UT 84518 · last May 18, first Sep 27
- East Carbon, UT 84520 · last May 5, first Oct 15
- Sunnyside, UT 84539 · last May 5, first Oct 15
- Huntington, UT 84528 · last May 18, first Sep 27
Frequently asked questions
- When is the last frost in Wellington, UT?
- For ZIP code 84542, the average last spring frost (32°F) is May 27, based on NOAA 1991-2020 climate normals for the Wellington 3 E, UT weather station. There is a 1-in-10 chance of a frost after June 11.
- When is the first frost in Wellington, UT?
- The average first fall frost (32°F) is September 26. There is a 1-in-10 chance of frost by September 11, so tender plants are at risk from that point on.
- How long is the growing season in 84542?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 122 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.