Frost dates for 85627Pomerene, AZ
The average last spring frost in Pomerene is April 12 and the average first fall frost is November 1, giving a typical growing season of about 202 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- Apr 12
- Average first fall frost
- Nov 1
- Growing season
- 202 days
Safer after Apr 29 (1-in-10 risk)
Possible by Oct 18 (1-in-10 risk)
First frost typically in 5 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 12 · Apr 26 · May 10 | Oct 12 · Oct 24 · Nov 5 | 180 days | 100% |
| Frost / freeze (32°F) | Mar 26 · Apr 12 · Apr 29 | Oct 18 · Nov 1 · Nov 15 | 202 days | 100% |
| Hard freeze (28°F) | Mar 2 · Mar 23 · Apr 13 | Oct 27 · Nov 11 · Nov 26 | 232 days | 100% |
Planting calendar for Pomerene
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 12 – May 18 |
| Tomatoes | Transplant outdoors | Apr 28 – Jul 12 |
| Peppers | Start seeds indoors | Mar 12 – Apr 12 |
| Peppers | Transplant outdoors | May 12 – Jun 12 |
| Eggplant | Start seeds indoors | Mar 29 – Apr 27 |
| Eggplant | Transplant outdoors | May 12 – Jun 12 |
| Cucumbers | Sow outdoors | May 12 – Jul 22 |
| Summer squash | Sow outdoors | Apr 28 – Jun 12 |
| Winter squash & pumpkins | Sow outdoors | May 12 – Jun 12 |
| Snap beans | Sow outdoors | Apr 28 – Aug 14 |
| Sweet corn | Sow outdoors | Apr 28 – Jul 12 |
| Watermelon & cantaloupe | Sow outdoors | May 12 – Jun 12 |
| Okra | Sow outdoors | May 5 – May 28 |
| Peas | Sow outdoors (spring) | Mar 12 – Apr 27 |
| Potatoes | Plant outdoors (spring) | Mar 12 – May 12 |
| Onions | Start seeds indoors (spring) | Jan 29 – Feb 25 |
| Onions | Transplant outdoors (spring) | Mar 29 – Apr 27 |
| Broccoli | Start seeds indoors (spring) | Feb 22 – Mar 28 |
| Broccoli | Transplant outdoors (spring) | Mar 29 – Apr 27 |
| Broccoli | Start seeds indoors (fall) | Jul 2 – Jul 12 |
| Broccoli | Transplant outdoors (fall) | Aug 1 – Aug 12 |
| Cabbage | Start seeds indoors (spring) | Feb 12 – Mar 12 |
| Cabbage | Transplant outdoors (spring) | Mar 12 – Apr 12 |
| Cabbage | Start seeds indoors (fall) | Jun 22 – Jul 22 |
| Cabbage | Transplant outdoors (fall) | Jul 22 – Aug 22 |
| Leaf lettuce | Sow outdoors (spring) | Mar 12 – May 28 |
| Leaf lettuce | Sow outdoors (fall) | Jul 22 – Sep 7 |
| Spinach | Sow outdoors (spring) | Mar 5 – Apr 18 |
| Spinach | Sow outdoors (fall) | Aug 8 – Sep 12 |
| Radishes | Sow outdoors (spring) | Mar 12 – May 2 |
| Radishes | Sow outdoors (fall) | Jul 22 – Sep 22 |
| Kale | Sow outdoors (spring) | Mar 29 – Apr 18 |
| Kale | Sow outdoors (fall) | Jul 15 – Aug 22 |
| Carrots | Sow outdoors (spring) | Apr 12 – May 28 |
| Carrots | Sow outdoors (fall) | Jun 22 – Aug 7 |
| Garlic | Plant outdoors (fall) | Oct 22 – Nov 22 |
Where these dates come from
ZIP code 85627 is matched to the NOAA station Benson 6Se, AZ, 13.9 km away, at 3,690 ft elevation (147 ft higher than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Benson 6Se, AZ (used) | 3,690 ft | Apr 12 | Nov 1 |
| Kartchner Caverns, AZ | 4,690 ft | Mar 20 | Nov 15 |
| Cascabel, AZ | 3,194 ft | Apr 24 | Oct 31 |
| Tombstone, AZ | 4,659 ft | Mar 4 | Nov 29 |
Frost dates near Pomerene
- Benson, AZ 85602 · last Apr 12, first Nov 1
- Saint David, AZ 85630 · last Apr 12, first Nov 1
- Dragoon, AZ 85609 · last Apr 14, first Nov 2
- Cochise, AZ 85606 · last Apr 9, first Oct 31
- Sierra Vista, AZ 85636 · last Apr 5, first Nov 9
- Huachuca City, AZ 85616 · last Apr 5, first Nov 9
- Tombstone, AZ 85638 · last Mar 4, first Nov 29
- Vail, AZ 85641 · last Jan 26, first Dec 16
Frequently asked questions
- When is the last frost in Pomerene, AZ?
- For ZIP code 85627, the average last spring frost (32°F) is April 12, based on NOAA 1991-2020 climate normals for the Benson 6Se, AZ weather station. There is a 1-in-10 chance of a frost after April 29.
- When is the first frost in Pomerene, AZ?
- The average first fall frost (32°F) is November 1. There is a 1-in-10 chance of frost by October 18, so tender plants are at risk from that point on.
- How long is the growing season in 85627?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 202 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.