Frost dates for 84093Sandy, UT
The average last spring frost in Sandy is April 29 and the average first fall frost is October 22, giving a typical growing season of about 174 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- Apr 29
- Average first fall frost
- Oct 22
- Growing season
- 174 days
Safer after May 30 (1-in-10 risk)
Possible by Oct 6 (1-in-10 risk)
Last frost typically in 184 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) | Apr 25 · May 13 · Jun 9 | Sep 27 · Oct 11 · Oct 27 | 151 days | 100% |
| Frost / freeze (32°F) | Apr 10 · Apr 29 · May 30 | Oct 6 · Oct 22 · Nov 7 | 174 days | 100% |
| Hard freeze (28°F) | Mar 21 · Apr 12 · May 13 | Oct 17 · Nov 1 · Nov 18 | 201 days | 100% |
Planting calendar for Sandy
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 | Mar 29 – Jun 4 |
| Tomatoes | Transplant outdoors | May 15 – Jul 2 |
| Peppers | Start seeds indoors | Mar 29 – Apr 29 |
| Peppers | Transplant outdoors | May 29 – Jun 29 |
| Eggplant | Start seeds indoors | Apr 15 – May 14 |
| Eggplant | Transplant outdoors | May 29 – Jun 29 |
| Cucumbers | Sow outdoors | May 29 – Jul 12 |
| Summer squash | Sow outdoors | May 15 – Jun 29 |
| Winter squash & pumpkins | Sow outdoors | May 29 – Jun 29 |
| Snap beans | Sow outdoors | May 15 – Aug 4 |
| Sweet corn | Sow outdoors | May 15 – Jul 2 |
| Watermelon & cantaloupe | Sow outdoors | May 29 – Jun 29 |
| Okra | Sow outdoors | May 22 – Jun 14 |
| Peas | Sow outdoors (spring) | Mar 29 – May 14 |
| Potatoes | Plant outdoors (spring) | Mar 29 – May 29 |
| Onions | Start seeds indoors (spring) | Feb 15 – Mar 14 |
| Onions | Transplant outdoors (spring) | Apr 15 – May 14 |
| Broccoli | Start seeds indoors (spring) | Mar 11 – Apr 14 |
| Broccoli | Transplant outdoors (spring) | Apr 15 – May 14 |
| Broccoli | Start seeds indoors (fall) | Jun 22 – Jul 2 |
| Broccoli | Transplant outdoors (fall) | Jul 22 – Aug 2 |
| Cabbage | Start seeds indoors (spring) | Mar 1 – Mar 29 |
| Cabbage | Transplant outdoors (spring) | Mar 29 – Apr 29 |
| Cabbage | Start seeds indoors (fall) | Jun 12 – Jul 12 |
| Cabbage | Transplant outdoors (fall) | Jul 12 – Aug 12 |
| Leaf lettuce | Sow outdoors (spring) | Mar 29 – Jun 14 |
| Leaf lettuce | Sow outdoors (fall) | Jul 12 – Aug 28 |
| Spinach | Sow outdoors (spring) | Mar 22 – May 5 |
| Spinach | Sow outdoors (fall) | Jul 29 – Sep 2 |
| Radishes | Sow outdoors (spring) | Mar 29 – May 19 |
| Radishes | Sow outdoors (fall) | Jul 12 – Sep 12 |
| Kale | Sow outdoors (spring) | Apr 15 – May 5 |
| Kale | Sow outdoors (fall) | Jul 5 – Aug 12 |
| Carrots | Sow outdoors (spring) | Apr 29 – Jun 14 |
| Carrots | Sow outdoors (fall) | Jun 12 – Jul 28 |
| Garlic | Plant outdoors (fall) | Oct 12 – Nov 12 |
Where these dates come from
ZIP code 84093 is matched to the NOAA station Cottonwood Weir, UT, 4.9 km away, at 4,986 ft elevation (235 ft higher than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Cottonwood Weir, UT (used) | 4,986 ft | Apr 29 | Oct 22 |
| Draper-Point Of Mtn, UT | 4,506 ft | Apr 18 | Oct 22 |
| Alpine, UT | 5,100 ft | May 3 | Oct 12 |
| Salt Lake City E Bench, UT | 4,850 ft | Apr 25 | Oct 18 |
Frost dates near Sandy
- Sandy, UT 84094 · last Apr 18, first Oct 22
- Midvale, UT 84047 · last Apr 18, first Oct 22
- Salt Lake City, UT 84121 · last May 7, first Oct 14
- South Jordan, UT 84009 · last Apr 18, first Oct 22
- Draper, UT 84020 · last Apr 18, first Oct 22
- West Jordan, UT 84088 · last Apr 18, first Oct 22
- Riverton, UT 84065 · last Apr 18, first Oct 22
- Alpine, UT 84004 · last May 3, first Oct 12
Frequently asked questions
- When is the last frost in Sandy, UT?
- For ZIP code 84093, the average last spring frost (32°F) is April 29, based on NOAA 1991-2020 climate normals for the Cottonwood Weir, UT weather station. There is a 1-in-10 chance of a frost after May 30.
- When is the first frost in Sandy, UT?
- The average first fall frost (32°F) is October 22. There is a 1-in-10 chance of frost by October 6, so tender plants are at risk from that point on.
- How long is the growing season in 84093?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 174 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.