Frost dates for 85554Young, AZ
The average last spring frost in Young is May 6 and the average first fall frost is October 20, giving a typical growing season of about 165 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- May 6
- Average first fall frost
- Oct 20
- Growing season
- 165 days
Safer after May 28 (1-in-10 risk)
Possible by Oct 6 (1-in-10 risk)
Last frost typically in 191 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 6 · May 23 · Jun 9 | Sep 26 · Oct 9 · Oct 22 | 136 days | 100% |
| Frost / freeze (32°F) | Apr 20 · May 6 · May 28 | Oct 6 · Oct 20 · Nov 2 | 165 days | 100% |
| Hard freeze (28°F) | Mar 27 · Apr 12 · May 5 | Oct 15 · Nov 1 · Nov 14 | 196 days | 100% |
Planting calendar for Young
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 5 – Jun 11 |
| Tomatoes | Transplant outdoors | May 22 – Jun 30 |
| Peppers | Start seeds indoors | Apr 5 – May 6 |
| Peppers | Transplant outdoors | Jun 5 – Jul 6 |
| Eggplant | Start seeds indoors | Apr 22 – May 21 |
| Eggplant | Transplant outdoors | Jun 5 – Jul 6 |
| Cucumbers | Sow outdoors | Jun 5 – Jul 10 |
| Summer squash | Sow outdoors | May 22 – Jul 6 |
| Winter squash & pumpkins | Sow outdoors | Jun 5 – Jul 6 |
| Snap beans | Sow outdoors | May 22 – Aug 2 |
| Sweet corn | Sow outdoors | May 22 – Jun 30 |
| Watermelon & cantaloupe | Sow outdoors | Jun 5 – Jul 6 |
| Okra | Sow outdoors | May 29 – Jun 21 |
| Peas | Sow outdoors (spring) | Apr 5 – May 21 |
| Potatoes | Plant outdoors (spring) | Apr 5 – Jun 5 |
| Onions | Start seeds indoors (spring) | Feb 22 – Mar 21 |
| Onions | Transplant outdoors (spring) | Apr 22 – May 21 |
| Broccoli | Start seeds indoors (spring) | Mar 18 – Apr 21 |
| Broccoli | Transplant outdoors (spring) | Apr 22 – May 21 |
| Broccoli | Start seeds indoors (fall) | Jun 20 – Jun 30 |
| Broccoli | Transplant outdoors (fall) | Jul 20 – Jul 31 |
| Cabbage | Start seeds indoors (spring) | Mar 8 – Apr 5 |
| Cabbage | Transplant outdoors (spring) | Apr 5 – May 6 |
| Cabbage | Start seeds indoors (fall) | Jun 10 – Jul 10 |
| Cabbage | Transplant outdoors (fall) | Jul 10 – Aug 10 |
| Leaf lettuce | Sow outdoors (spring) | Apr 5 – Jun 21 |
| Leaf lettuce | Sow outdoors (fall) | Jul 10 – Aug 26 |
| Spinach | Sow outdoors (spring) | Mar 29 – May 12 |
| Spinach | Sow outdoors (fall) | Jul 27 – Aug 31 |
| Radishes | Sow outdoors (spring) | Apr 5 – May 26 |
| Radishes | Sow outdoors (fall) | Jul 10 – Sep 10 |
| Kale | Sow outdoors (spring) | Apr 22 – May 12 |
| Kale | Sow outdoors (fall) | Jul 3 – Aug 10 |
| Carrots | Sow outdoors (spring) | May 6 – Jun 21 |
| Carrots | Sow outdoors (fall) | Jun 10 – Jul 26 |
| Garlic | Plant outdoors (fall) | Oct 10 – Nov 10 |
Where these dates come from
ZIP code 85554 is matched to the NOAA station Pleasant Valley, AZ, 0.2 km away, at 5,183 ft elevation (4 ft lower than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Pleasant Valley, AZ (used) | 5,183 ft | May 6 | Oct 20 |
| Payson, AZ | 4,850 ft | Apr 29 | Oct 24 |
| Punkin Ctr, AZ | 2,325 ft | Mar 7 | Nov 20 |
| Heber (Black Mesa) Rs, AZ | 6,590 ft | May 23 | Oct 5 |
Frost dates near Young
- Payson, AZ 85541 · last Apr 29, first Oct 24
- Forest Lakes, AZ 85931 · last May 31, first Oct 2
- Tonto Basin, AZ 85553 · last Mar 7, first Nov 20
- Cibecue, AZ 85911 · last May 6, first Oct 20
- Heber, AZ 85928 · last May 23, first Oct 5
- Overgaard, AZ 85933 · last May 23, first Oct 5
- Roosevelt, AZ 85545 · last Jan 17, first Dec 25
- Pine, AZ 85544 · last Apr 9, first Nov 10
Frequently asked questions
- When is the last frost in Young, AZ?
- For ZIP code 85554, the average last spring frost (32°F) is May 6, based on NOAA 1991-2020 climate normals for the Pleasant Valley, AZ weather station. There is a 1-in-10 chance of a frost after May 28.
- When is the first frost in Young, AZ?
- The average first fall frost (32°F) is October 20. 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 85554?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 165 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.