Frost Dates for Dewey, AZ 86327
Last spring frost April 10 · First fall frost November 11 · 215 frost-free days · USDA Zone 8a
ZIP 86327 has about 12,200 people.
Long season: 215 frost-free days. Spring frost risk spans March 19–May 5 (47 days). Fall frost risk spans October 28–November 23 (26 days).
Frost probability for 86327
| Frost | 10% | 50% | 90% |
|---|---|---|---|
| Spring (last frost) | May 5 | April 10 | March 19 |
| Fall (first frost) | October 28 | November 11 | November 23 |
Dates come from NOAA 1971–2000 freeze probabilities at CORDES (28.4 km away); the 50% date is the median year.
Which crops fit a 215-day season in Dewey
In Dewey (215 frost-free days, a long season), 30 of 56 planner crops fit outright, 25 get two plantings, 1 crop is perennial.
| Crop | Start indoors | Plant out / sow | Days you have | Verdict | Last sow date |
|---|---|---|---|---|---|
| Tomato | Mar 6 | Apr 24–May 1 | 173 | fits: 80 days to maturity, 173 available after Apr 24. | Jul 12 |
| Pepper | Feb 27 | Apr 24–May 1 | 173 | fits: 75 days to maturity, 173 available after Apr 24. | Jul 17 |
| Lettuce | Feb 13 | Mar 13–Mar 20 | 250 | two-plantings: Plant Mar 13 and again by Sep 20; both mature before Nov 18. | Sep 20 |
| Carrots | — | Mar 20–Mar 27 | 257 | fits: 70 days to maturity, 257 available after Mar 20. | Sep 9 |
| Cucumber | Mar 20 | Apr 24–May 1 | 187 | two-plantings: Plant Apr 24 and again by Aug 15; both mature before Oct 28. | Aug 15 |
| Beans | — | Apr 17–May 1 | 201 | two-plantings: Plant Apr 17 and again by Aug 22; both mature before Nov 4. | Aug 22 |
| Peas | — | Feb 13–Apr 24 | 278 | fits: 65 days to maturity, 278 available after Feb 13. | Aug 31 |
| Zucchini | Mar 27 | Apr 24–May 1 | 187 | two-plantings: Plant Apr 24 and again by Aug 20; both mature before Oct 28. | Aug 20 |
| Onion | Jan 16 | Mar 13–Mar 27 | 250 | fits: 100 days to maturity, 250 available after Mar 13. | — |
| Spinach | — | Feb 13–Apr 3 | 292 | two-plantings: Plant Feb 13 and again by Oct 9; both mature before Dec 2. | Oct 9 |
| Kale | Jan 30 | Mar 13–Mar 27 | 264 | two-plantings: Plant Mar 13 and again by Sep 24; both mature before Dec 2. | Sep 24 |
| Broccoli | Feb 13 | Mar 13–Mar 27 | 250 | fits: 80 days to maturity, 250 available after Mar 13. | Aug 16 |
| Cabbage | Feb 13 | Mar 13–Mar 27 | 264 | fits: 70 days to maturity, 264 available after Mar 13. | Sep 9 |
| Radish | — | Feb 13–May 8 | 278 | two-plantings: Plant Feb 13 and again by Oct 10; both mature before Nov 18. | Oct 10 |
| Beets | — | Feb 13–May 8 | 278 | two-plantings: Plant Feb 13 and again by Sep 10; both mature before Nov 18. | Sep 10 |
| Potatoes | — | Mar 27–Apr 3 | 236 | fits: 90 days to maturity, 236 available after Mar 27. | — |
| Garlic | — | Nov 11 | 320 | overwinter: Plant Nov 11 to Dec 2; harvest the following summer. | Dec 2 |
| Strawberry | — | Mar 6–May 1 | 271 | perennial: A perennial: plant Mar 6; it fruits from the following year and keeps producing for several years. | — |
| Corn | Mar 13 | Apr 17–Apr 24 | 187 | fits: 75 days to maturity, 187 available after Apr 17. | Jul 24 |
| Pumpkin | Mar 27 | Apr 24–Apr 24 | 180 | fits: 100 days to maturity, 180 available after Apr 24. | Jun 29 |
| Cauliflower | Feb 27 | Apr 3–Apr 17 | 229 | fits: 75 days to maturity, 229 available after Apr 3. | Aug 21 |
| Swiss Chard | Feb 13 | Mar 27–Mar 27 | 236 | two-plantings: Plant Mar 27 and again by Sep 10; both mature before Nov 18. | Sep 10 |
| Arugula | — | Feb 13–May 8 | 292 | two-plantings: Plant Feb 13 and again by Oct 9; both mature before Dec 2. | Oct 9 |
| Brussel Sprouts | Feb 13 | Mar 13–Mar 27 | 264 | fits: 100 days to maturity, 264 available after Mar 13. | Aug 10 |
| Butternut Squash | Mar 27 | Apr 24–May 1 | 180 | fits: 100 days to maturity, 180 available after Apr 24. | Jun 29 |
| Eggplant | Feb 20 | Apr 24–May 1 | 173 | fits: 70 days to maturity, 173 available after Apr 24. | Jul 22 |
| Okra | Mar 13 | Apr 17–Apr 24 | 194 | two-plantings: Plant Apr 17 and again by Aug 20; both mature before Oct 28. | Aug 20 |
| Basil | Mar 6 | May 1–May 1 | 180 | two-plantings: Plant May 1 and again by Aug 15; both mature before Oct 28. | Aug 15 |
| Cilantro | — | Mar 13–Apr 3 | 250 | two-plantings: Plant Mar 13 and again by Sep 15; both mature before Nov 18. | Sep 15 |
| Parsley | Jan 30 | Apr 17–Apr 24 | 215 | fits: 70 days to maturity, 215 available after Apr 17. | Aug 26 |
| Celery | Jan 30 | Apr 17–May 1 | 215 | fits: 120 days to maturity, 215 available after Apr 17. | Jul 7 |
| Scallions | Jan 30 | Mar 13–Mar 27 | 264 | two-plantings: Plant Mar 13 and again by Sep 19; both mature before Dec 2. | Sep 19 |
| Turnip | — | Mar 13–Mar 27 | 264 | two-plantings: Plant Mar 13 and again by Sep 29; both mature before Dec 2. | Sep 29 |
| Kohlrabi | — | Feb 27–Mar 13 | 278 | two-plantings: Plant Feb 27 and again by Sep 24; both mature before Dec 2. | Sep 24 |
| Bok Choy | Mar 13 | Apr 3–Apr 10 | 229 | two-plantings: Plant Apr 3 and again by Sep 20; both mature before Nov 18. | Sep 20 |
| Collards | Jan 30 | Mar 13–Mar 27 | 264 | two-plantings: Plant Mar 13 and again by Sep 19; both mature before Dec 2. | Sep 19 |
| Cantaloupe | Mar 27 | Apr 24–May 1 | 173 | fits: 85 days to maturity, 173 available after Apr 24. | Jul 7 |
| Chives | Jan 16 | Apr 17–Apr 24 | 229 | fits: 90 days to maturity, 229 available after Apr 17. | — |
| Dill | — | Feb 13–May 8 | 278 | two-plantings: Plant Feb 13 and again by Sep 10; both mature before Nov 18. | Sep 10 |
| Oregano | Jan 30 | Apr 17–Apr 24 | 229 | fits: 80 days to maturity, 229 available after Apr 17. | — |
| Rosemary | Jan 16 | Apr 17–Apr 24 | 215 | fits: 80 days to maturity, 215 available after Apr 17. | — |
| Sage | Feb 13 | Apr 17–Apr 24 | 229 | fits: 75 days to maturity, 229 available after Apr 17. | — |
| Thyme | Jan 30 | Apr 17–Apr 24 | 229 | fits: 90 days to maturity, 229 available after Apr 17. | — |
| Calendula | Feb 27 | Mar 27–Apr 10 | 236 | two-plantings: Plant Mar 27 and again by Sep 15; both mature before Nov 18. | Sep 15 |
| Cosmos | Mar 13 | Apr 10–Apr 24 | 201 | two-plantings: Plant Apr 10 and again by Aug 15; both mature before Oct 28. | Aug 15 |
| Lavender | Jan 16 | Apr 10–Apr 24 | 236 | fits: 90 days to maturity, 236 available after Apr 10. | — |
| Marigolds | Feb 27 | Apr 10–Apr 17 | 201 | two-plantings: Plant Apr 10 and again by Aug 25; both mature before Oct 28. | Aug 25 |
| Melons | Mar 27 | Apr 24–May 1 | 173 | fits: 85 days to maturity, 173 available after Apr 24. | Jul 7 |
| Mint | — | Apr 10–Apr 24 | 236 | fits: 90 days to maturity, 236 available after Apr 10. | — |
| Nasturtiums | Mar 13 | Apr 10–Apr 17 | 201 | two-plantings: Plant Apr 10 and again by Aug 20; both mature before Oct 28. | Aug 20 |
| Pole Beans | — | Apr 17–May 1 | 194 | fits: 65 days to maturity, 194 available after Apr 17. | Aug 10 |
| Spaghetti Squash | Mar 27 | Apr 24–May 1 | 180 | fits: 90 days to maturity, 180 available after Apr 24. | Jul 9 |
| Sunflowers | — | Apr 10–Apr 24 | 201 | fits: 70 days to maturity, 201 available after Apr 10. | Aug 5 |
| Tomatillos | Feb 13 | Apr 17–Apr 24 | 180 | fits: 75 days to maturity, 180 available after Apr 17. | Jul 17 |
| Watermelon | Mar 27 | Apr 17–Apr 24 | 180 | fits: 80 days to maturity, 180 available after Apr 17. | Jul 12 |
| Yellow Squash | Mar 27 | Apr 24–May 1 | 187 | two-plantings: Plant Apr 24 and again by Aug 20; both mature before Oct 28. | Aug 20 |
| Zinnias | Mar 13 | Apr 10–Apr 24 | 201 | two-plantings: Plant Apr 10 and again by Aug 15; both mature before Oct 28. | Aug 15 |
Month by month in Dewey
| Month | What to do |
|---|---|
| January | Start indoors: Chives (Jan 16), Lavender (Jan 16), Onion (Jan 16), Rosemary (Jan 16), Celery (Jan 30), Collards (Jan 30), +5 more. |
| February | Start indoors: Broccoli (Feb 13), Brussel Sprouts (Feb 13), Cabbage (Feb 13), Lettuce (Feb 13), Sage (Feb 13), Swiss Chard (Feb 13), +6 more. Direct sow from: Arugula (Feb 13), Beets (Feb 13), Dill (Feb 13), Peas (Feb 13), Radish (Feb 13), Spinach (Feb 13), +1 more. |
| March | Start indoors: Basil (Mar 6), Tomato (Mar 6), Bok Choy (Mar 13), Corn (Mar 13), Cosmos (Mar 13), Nasturtiums (Mar 13), +11 more. Direct sow from: Cilantro (Mar 13), Turnip (Mar 13), Carrots (Mar 20), Potatoes (Mar 27). Transplant from: Broccoli (Mar 13), Brussel Sprouts (Mar 13), Cabbage (Mar 13), Collards (Mar 13), Kale (Mar 13), Lettuce (Mar 13), +4 more. Plant: Strawberry (Mar 6). |
| April | Direct sow from: Sunflowers (Apr 10), Beans (Apr 17), Pole Beans (Apr 17). Transplant from: Bok Choy (Apr 3), Cauliflower (Apr 3), Cosmos (Apr 10), Lavender (Apr 10), Marigolds (Apr 10), Mint (Apr 10), +24 more. Last frost around April 10. |
| May | Transplant from: Basil (May 1). |
| June | Last sowing dates: Butternut Squash (Jun 29), Pumpkin (Jun 29). |
| July | Last sowing dates: Cantaloupe (Jul 7), Celery (Jul 7), Melons (Jul 7), Spaghetti Squash (Jul 9), Tomato (Jul 12), Watermelon (Jul 12), +4 more. |
| August | Last sowing dates: Sunflowers (Aug 5), Brussel Sprouts (Aug 10), Pole Beans (Aug 10), Basil (Aug 15), Cosmos (Aug 15), Cucumber (Aug 15), +11 more. |
| September | Last sowing dates: Cabbage (Sep 9), Carrots (Sep 9), Beets (Sep 10), Dill (Sep 10), Swiss Chard (Sep 10), Calendula (Sep 15), +8 more. |
| October | Last sowing dates: Arugula (Oct 9), Spinach (Oct 9), Radish (Oct 10). |
| November | Direct sow from: Garlic (Nov 11). First frost around November 11. |
| December | Last sowing dates: Garlic (Dec 2). |
Frequently Asked Questions
What is the last frost date for Dewey, AZ (ZIP 86327)?
The median last spring frost date for Dewey, AZ (ZIP code 86327) is around April 10. This is the 50th-percentile date — meaning half of all years see frost end before this date. Use the 10% and 90% dates to understand the full range of risk in your area. One year in ten frost ends before March 19; one in ten it runs past May 5.
What is the first fall frost date in Dewey, AZ?
The median first fall frost date for Dewey, AZ is around November 11. Plan to harvest or protect frost-sensitive crops like tomatoes and peppers at least a week before this date to avoid losses. The first frost arrives around October 28 in the earliest one-in-ten years, so cover tomatoes and peppers from then.
How long is the growing season in Dewey, AZ?
The frost-free growing season in Dewey is about 215 days. This window — from your last spring frost to your first fall frost — is when warm-season vegetables thrive. Cold-hardy crops like kale, spinach, and peas can extend your season by weeks on either side. In Dewey (215 frost-free days, a long season), 30 of 56 planner crops fit outright, 25 get two plantings, 1 crop is perennial.
What USDA hardiness zone is Dewey, AZ?
Dewey, AZ is in USDA hardiness zone 8a (2023 USDA Plant Hardiness Zone Map). Zones come from the average coldest winter temperature, so they tell you which perennials survive the winter; the frost dates on this page tell you when to plant.
When should I start tomatoes indoors in Dewey, AZ?
Start tomatoes indoors Mar 6 and plant out Apr 24 in Dewey. The planner uses the local median last frost and this crop's indoor-start and transplant offsets.
How many plantings of lettuce fit in Dewey?
Two: plant Mar 13 and again by Sep 20; both mature before Nov 18.
When do I plant garlic in Dewey?
Nov 11 to Dec 2; it overwinters and is ready the following summer.
Can I get two tomato crops in Dewey?
Yes: plant out Apr 24 for a summer crop, and set out a second round of transplants by Jul 12 for a fall crop.
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