Frost dates for 84656Scipio, UT
The average last spring frost in Scipio is May 22 and the average first fall frost is September 25, giving a typical growing season of about 122 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- May 22
- Average first fall frost
- Sep 25
- Growing season
- 122 days
Safer after Jun 10 (1-in-10 risk)
Possible by Sep 9 (1-in-10 risk)
Last frost typically in 207 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 20 · Jun 4 · Jun 21 | Sep 2 · Sep 17 · Oct 1 | 100 days | 100% |
| Frost / freeze (32°F) | May 5 · May 22 · Jun 10 | Sep 9 · Sep 25 · Oct 8 | 122 days | 100% |
| Hard freeze (28°F) | Apr 22 · May 7 · May 28 | Sep 20 · Oct 4 · Oct 20 | 146 days | 100% |
Planting calendar for Scipio
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 21 – Jun 27 |
| Tomatoes | Transplant outdoors | Jun 7 – Jun 5 |
| Peppers | Start seeds indoors | Apr 21 – May 22 |
| Peppers | Transplant outdoors | Jun 21 – Jul 22 |
| Eggplant | Start seeds indoors | May 8 – Jun 6 |
| Eggplant | Transplant outdoors | Jun 21 – Jul 22 |
| Cucumbers | Sow outdoors | Jun 21 – Jun 15 |
| Summer squash | Sow outdoors | Jun 7 – Jul 22 |
| Winter squash & pumpkins | Sow outdoors | Jun 21 – Jul 22 |
| Snap beans | Sow outdoors | Jun 7 – Jul 8 |
| Sweet corn | Sow outdoors | Jun 7 – Jun 5 |
| Watermelon & cantaloupe | Sow outdoors | Jun 21 – Jul 22 |
| Okra | Sow outdoors | Jun 14 – Jul 7 |
| Peas | Sow outdoors (spring) | Apr 21 – Jun 6 |
| Potatoes | Plant outdoors (spring) | Apr 21 – Jun 21 |
| Onions | Start seeds indoors (spring) | Mar 10 – Apr 6 |
| Onions | Transplant outdoors (spring) | May 8 – Jun 6 |
| Broccoli | Start seeds indoors (spring) | Apr 3 – May 7 |
| Broccoli | Transplant outdoors (spring) | May 8 – Jun 6 |
| Broccoli | Start seeds indoors (fall) | May 26 – Jun 5 |
| Broccoli | Transplant outdoors (fall) | Jun 25 – Jul 6 |
| Cabbage | Start seeds indoors (spring) | Mar 24 – Apr 21 |
| Cabbage | Transplant outdoors (spring) | Apr 21 – May 22 |
| Cabbage | Start seeds indoors (fall) | May 16 – Jun 15 |
| Cabbage | Transplant outdoors (fall) | Jun 15 – Jul 16 |
| Leaf lettuce | Sow outdoors (spring) | Apr 21 – Jul 7 |
| Leaf lettuce | Sow outdoors (fall) | Jun 15 – Aug 1 |
| Spinach | Sow outdoors (spring) | Apr 14 – May 28 |
| Spinach | Sow outdoors (fall) | Jul 2 – Aug 6 |
| Radishes | Sow outdoors (spring) | Apr 21 – Jun 11 |
| Radishes | Sow outdoors (fall) | Jun 15 – Aug 16 |
| Kale | Sow outdoors (spring) | May 8 – May 28 |
| Kale | Sow outdoors (fall) | Jun 8 – Jul 16 |
| Carrots | Sow outdoors (spring) | May 22 – Jul 7 |
| Carrots | Sow outdoors (fall) | May 16 – Jul 1 |
| Garlic | Plant outdoors (fall) | Sep 15 – Oct 16 |
Where these dates come from
ZIP code 84656 is matched to the NOAA station Scipio, UT, 0.5 km away, at 5,314 ft elevation (19 ft higher than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Scipio, UT (used) | 5,314 ft | May 22 | Sep 25 |
| Oak City, UT | 5,095 ft | May 2 | Oct 13 |
| Fillmore, UT | 5,127 ft | May 4 | Oct 14 |
| Manti Radio Kmti, UT | 5,498 ft | May 31 | Sep 21 |
Frost dates near Scipio
- Fayette, UT 84630 · last May 22, first Sep 25
- Holden, UT 84636 · last May 4, first Oct 14
- Oak City, UT 84649 · last May 2, first Oct 13
- Gunnison, UT 84634 · last May 22, first Sep 25
- Centerfield, UT 84622 · last May 22, first Sep 25
- Axtell, UT 84621 · last May 22, first Sep 25
- Levan, UT 84639 · last May 10, first Oct 7
- Redmond, UT 84652 · last May 21, first Sep 24
Frequently asked questions
- When is the last frost in Scipio, UT?
- For ZIP code 84656, the average last spring frost (32°F) is May 22, based on NOAA 1991-2020 climate normals for the Scipio, UT weather station. There is a 1-in-10 chance of a frost after June 10.
- When is the first frost in Scipio, UT?
- The average first fall frost (32°F) is September 25. There is a 1-in-10 chance of frost by September 9, so tender plants are at risk from that point on.
- How long is the growing season in 84656?
- 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.