Frost Dates for Lake Havasu City, AZ 86403
Lake Havasu City has 3 ZIP codes. The Lake Havasu City, AZ frost page lists all of them with their dates.
Last spring frost January 22 · First fall frost December 15 · 327 frost-free days · USDA Zone 10a
ZIP 86403 has about 18,300 people, one of 3 ZIP codes in Lake Havasu City.
Very long season: 327 frost-free days.
Frost probability for 86403
| Frost | 10% | 50% | 90% |
|---|---|---|---|
| Spring (last frost) | February 9 | January 22 | — |
| Fall (first frost) | December 2 | December 15 | — |
Dates come from NOAA 1971–2000 freeze probabilities at PARKER (36.2 km away); the 50% date is the median year.
Which crops fit a 327-day season in Lake Havasu City
In Lake Havasu City (327 frost-free days, a very 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 | Dec 18 | Feb 5–Feb 12 | 285 | fits: 80 days to maturity, 285 available after Feb 5. | Aug 15 |
| Pepper | Dec 11 | Feb 5–Feb 12 | 285 | fits: 75 days to maturity, 285 available after Feb 5. | Aug 20 |
| Lettuce | Nov 27 | Dec 25–Jan 1 | 362 | two-plantings: Plant Dec 25 and again by Oct 24; both mature before Dec 22. | Oct 24 |
| Carrots | — | Jan 1–Jan 8 | 369 | fits: 70 days to maturity, 369 available after Jan 1. | Oct 13 |
| Cucumber | Jan 1 | Feb 5–Feb 12 | 299 | two-plantings: Plant Feb 5 and again by Sep 18; both mature before Dec 1. | Sep 18 |
| Beans | — | Jan 29–Feb 12 | 313 | two-plantings: Plant Jan 29 and again by Sep 25; both mature before Dec 8. | Sep 25 |
| Peas | — | Nov 27–Feb 5 | 390 | fits: 65 days to maturity, 390 available after Nov 27. | Oct 4 |
| Zucchini | Jan 8 | Feb 5–Feb 12 | 299 | two-plantings: Plant Feb 5 and again by Sep 23; both mature before Dec 1. | Sep 23 |
| Onion | Oct 30 | Dec 25–Jan 8 | 362 | fits: 100 days to maturity, 362 available after Dec 25. | — |
| Spinach | — | Nov 27–Jan 15 | 404 | two-plantings: Plant Nov 27 and again by Nov 12; both mature before Jan 5. | Nov 12 |
| Kale | Nov 13 | Dec 25–Jan 8 | 376 | two-plantings: Plant Dec 25 and again by Oct 28; both mature before Jan 5. | Oct 28 |
| Broccoli | Nov 27 | Dec 25–Jan 8 | 362 | fits: 80 days to maturity, 362 available after Dec 25. | Sep 19 |
| Cabbage | Nov 27 | Dec 25–Jan 8 | 376 | fits: 70 days to maturity, 376 available after Dec 25. | Oct 13 |
| Radish | — | Nov 27–Feb 19 | 390 | two-plantings: Plant Nov 27 and again by Nov 13; both mature before Dec 22. | Nov 13 |
| Beets | — | Nov 27–Feb 19 | 390 | two-plantings: Plant Nov 27 and again by Oct 14; both mature before Dec 22. | Oct 14 |
| Potatoes | — | Jan 8–Jan 15 | 348 | fits: 90 days to maturity, 348 available after Jan 8. | — |
| Garlic | — | Dec 15 | 432 | overwinter: Plant Dec 15 to Jan 5; harvest the following summer. | Jan 5 |
| Strawberry | — | Dec 18–Feb 12 | 383 | perennial: A perennial: plant Dec 18; it fruits from the following year and keeps producing for several years. | — |
| Corn | Dec 25 | Jan 29–Feb 5 | 299 | fits: 75 days to maturity, 299 available after Jan 29. | Aug 27 |
| Pumpkin | Jan 8 | Feb 5–Feb 5 | 292 | fits: 100 days to maturity, 292 available after Feb 5. | Aug 2 |
| Cauliflower | Dec 11 | Jan 15–Jan 29 | 341 | fits: 75 days to maturity, 341 available after Jan 15. | Sep 24 |
| Swiss Chard | Nov 27 | Jan 8–Jan 8 | 348 | two-plantings: Plant Jan 8 and again by Oct 14; both mature before Dec 22. | Oct 14 |
| Arugula | — | Nov 27–Feb 19 | 404 | two-plantings: Plant Nov 27 and again by Nov 12; both mature before Jan 5. | Nov 12 |
| Brussel Sprouts | Nov 27 | Dec 25–Jan 8 | 376 | fits: 100 days to maturity, 376 available after Dec 25. | Sep 13 |
| Butternut Squash | Jan 8 | Feb 5–Feb 12 | 292 | fits: 100 days to maturity, 292 available after Feb 5. | Aug 2 |
| Eggplant | Dec 4 | Feb 5–Feb 12 | 285 | fits: 70 days to maturity, 285 available after Feb 5. | Aug 25 |
| Okra | Dec 25 | Jan 29–Feb 5 | 306 | two-plantings: Plant Jan 29 and again by Sep 23; both mature before Dec 1. | Sep 23 |
| Basil | Dec 18 | Feb 12–Feb 12 | 292 | two-plantings: Plant Feb 12 and again by Sep 18; both mature before Dec 1. | Sep 18 |
| Cilantro | — | Dec 25–Jan 15 | 362 | two-plantings: Plant Dec 25 and again by Oct 19; both mature before Dec 22. | Oct 19 |
| Parsley | Nov 13 | Jan 29–Feb 5 | 327 | fits: 70 days to maturity, 327 available after Jan 29. | Sep 29 |
| Celery | Nov 13 | Jan 29–Feb 12 | 327 | fits: 120 days to maturity, 327 available after Jan 29. | Aug 10 |
| Scallions | Nov 13 | Dec 25–Jan 8 | 376 | two-plantings: Plant Dec 25 and again by Oct 23; both mature before Jan 5. | Oct 23 |
| Turnip | — | Dec 25–Jan 8 | 376 | two-plantings: Plant Dec 25 and again by Nov 2; both mature before Jan 5. | Nov 2 |
| Kohlrabi | — | Dec 11–Dec 25 | 390 | two-plantings: Plant Dec 11 and again by Oct 28; both mature before Jan 5. | Oct 28 |
| Bok Choy | Dec 25 | Jan 15–Jan 22 | 341 | two-plantings: Plant Jan 15 and again by Oct 24; both mature before Dec 22. | Oct 24 |
| Collards | Nov 13 | Dec 25–Jan 8 | 376 | two-plantings: Plant Dec 25 and again by Oct 23; both mature before Jan 5. | Oct 23 |
| Cantaloupe | Jan 8 | Feb 5–Feb 12 | 285 | fits: 85 days to maturity, 285 available after Feb 5. | Aug 10 |
| Chives | Oct 30 | Jan 29–Feb 5 | 341 | fits: 90 days to maturity, 341 available after Jan 29. | — |
| Dill | — | Nov 27–Feb 19 | 390 | two-plantings: Plant Nov 27 and again by Oct 14; both mature before Dec 22. | Oct 14 |
| Oregano | Nov 13 | Jan 29–Feb 5 | 341 | fits: 80 days to maturity, 341 available after Jan 29. | — |
| Rosemary | Oct 30 | Jan 29–Feb 5 | 327 | fits: 80 days to maturity, 327 available after Jan 29. | — |
| Sage | Nov 27 | Jan 29–Feb 5 | 341 | fits: 75 days to maturity, 341 available after Jan 29. | — |
| Thyme | Nov 13 | Jan 29–Feb 5 | 341 | fits: 90 days to maturity, 341 available after Jan 29. | — |
| Calendula | Dec 11 | Jan 8–Jan 22 | 348 | two-plantings: Plant Jan 8 and again by Oct 19; both mature before Dec 22. | Oct 19 |
| Cosmos | Dec 25 | Jan 22–Feb 5 | 313 | two-plantings: Plant Jan 22 and again by Sep 18; both mature before Dec 1. | Sep 18 |
| Lavender | Oct 30 | Jan 22–Feb 5 | 348 | fits: 90 days to maturity, 348 available after Jan 22. | — |
| Marigolds | Dec 11 | Jan 22–Jan 29 | 313 | two-plantings: Plant Jan 22 and again by Sep 28; both mature before Dec 1. | Sep 28 |
| Melons | Jan 8 | Feb 5–Feb 12 | 285 | fits: 85 days to maturity, 285 available after Feb 5. | Aug 10 |
| Mint | — | Jan 22–Feb 5 | 348 | fits: 90 days to maturity, 348 available after Jan 22. | — |
| Nasturtiums | Dec 25 | Jan 22–Jan 29 | 313 | two-plantings: Plant Jan 22 and again by Sep 23; both mature before Dec 1. | Sep 23 |
| Pole Beans | — | Jan 29–Feb 12 | 306 | fits: 65 days to maturity, 306 available after Jan 29. | Sep 13 |
| Spaghetti Squash | Jan 8 | Feb 5–Feb 12 | 292 | fits: 90 days to maturity, 292 available after Feb 5. | Aug 12 |
| Sunflowers | — | Jan 22–Feb 5 | 313 | fits: 70 days to maturity, 313 available after Jan 22. | Sep 8 |
| Tomatillos | Nov 27 | Jan 29–Feb 5 | 292 | fits: 75 days to maturity, 292 available after Jan 29. | Aug 20 |
| Watermelon | Jan 8 | Jan 29–Feb 5 | 292 | fits: 80 days to maturity, 292 available after Jan 29. | Aug 15 |
| Yellow Squash | Jan 8 | Feb 5–Feb 12 | 299 | two-plantings: Plant Feb 5 and again by Sep 23; both mature before Dec 1. | Sep 23 |
| Zinnias | Dec 25 | Jan 22–Feb 5 | 313 | two-plantings: Plant Jan 22 and again by Sep 18; both mature before Dec 1. | Sep 18 |
Month by month in Lake Havasu City
| Month | What to do |
|---|---|
| January | Start indoors: Cucumber (Jan 1), Butternut Squash (Jan 8), Cantaloupe (Jan 8), Melons (Jan 8), Pumpkin (Jan 8), Spaghetti Squash (Jan 8), +3 more. Direct sow from: Carrots (Jan 1), Potatoes (Jan 8), Sunflowers (Jan 22), Beans (Jan 29), Pole Beans (Jan 29). Transplant from: Calendula (Jan 8), Swiss Chard (Jan 8), Bok Choy (Jan 15), Cauliflower (Jan 15), Cosmos (Jan 22), Lavender (Jan 22), +15 more. Last frost around January 22. Last sowing dates: Garlic (Jan 5). |
| February | Transplant from: Butternut Squash (Feb 5), Cantaloupe (Feb 5), Cucumber (Feb 5), Eggplant (Feb 5), Melons (Feb 5), Pepper (Feb 5), +6 more. |
| March | Succession plant lettuce and greens. Keep beds weeded and watered consistently. |
| April | Harvest regularly to encourage production. Monitor for pests and disease. |
| May | Midsummer: harvest beans, zucchini, cucumbers. Start brassica seeds indoors for fall. |
| June | Direct sow carrots and beets for fall harvest. Start fall broccoli and kale indoors. |
| July | Direct sow carrots and beets for fall harvest. Start fall broccoli and kale indoors. |
| August | Last sowing dates: Butternut Squash (Aug 2), Pumpkin (Aug 2), Cantaloupe (Aug 10), Celery (Aug 10), Melons (Aug 10), Spaghetti Squash (Aug 12), +6 more. |
| September | Last sowing dates: Sunflowers (Sep 8), Brussel Sprouts (Sep 13), Pole Beans (Sep 13), Basil (Sep 18), Cosmos (Sep 18), Cucumber (Sep 18), +10 more. |
| October | Start indoors: Chives (Oct 30), Lavender (Oct 30), Onion (Oct 30), Rosemary (Oct 30). Last sowing dates: Peas (Oct 4), Cabbage (Oct 13), Carrots (Oct 13), Beets (Oct 14), Dill (Oct 14), Swiss Chard (Oct 14), +8 more. |
| November | Start indoors: Celery (Nov 13), Collards (Nov 13), Kale (Nov 13), Oregano (Nov 13), Parsley (Nov 13), Scallions (Nov 13), +8 more. Direct sow from: Arugula (Nov 27), Beets (Nov 27), Dill (Nov 27), Peas (Nov 27), Radish (Nov 27), Spinach (Nov 27). Last sowing dates: Turnip (Nov 2), Arugula (Nov 12), Spinach (Nov 12), Radish (Nov 13). |
| December | Start indoors: Eggplant (Dec 4), Calendula (Dec 11), Cauliflower (Dec 11), Marigolds (Dec 11), Pepper (Dec 11), Basil (Dec 18), +7 more. Direct sow from: Kohlrabi (Dec 11), Garlic (Dec 15), Cilantro (Dec 25), Turnip (Dec 25). Transplant from: Broccoli (Dec 25), Brussel Sprouts (Dec 25), Cabbage (Dec 25), Collards (Dec 25), Kale (Dec 25), Lettuce (Dec 25), +2 more. Plant: Strawberry (Dec 18). First frost around December 15. |
Frequently Asked Questions
What is the last frost date for Lake Havasu City, AZ (ZIP 86403)?
The median last spring frost date for Lake Havasu City, AZ (ZIP code 86403) is around January 22. 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.
What is the first fall frost date in Lake Havasu City, AZ?
The median first fall frost date for Lake Havasu City, AZ is around December 15. 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 December 2 in the earliest one-in-ten years, so cover tomatoes and peppers from then.
How long is the growing season in Lake Havasu City, AZ?
The frost-free growing season in Lake Havasu City is about 327 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 Lake Havasu City (327 frost-free days, a very long season), 30 of 56 planner crops fit outright, 25 get two plantings, 1 crop is perennial.
What USDA hardiness zone is Lake Havasu City, AZ?
Lake Havasu City, AZ is in USDA hardiness zone 10a (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 Lake Havasu City, AZ?
Start tomatoes indoors Dec 18 and plant out Feb 5 in Lake Havasu City. The planner uses the local median last frost and this crop's indoor-start and transplant offsets.
How many plantings of lettuce fit in Lake Havasu City?
Two: plant Dec 25 and again by Oct 24; both mature before Dec 22.
When do I plant garlic in Lake Havasu City?
Dec 15 to Jan 5; it overwinters and is ready the following summer.
Can I get two tomato crops in Lake Havasu City?
Yes: plant out Feb 5 for a summer crop, and set out a second round of transplants by Aug 15 for a fall crop.
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