Frost Dates for Hayward, CA 94541
Hayward has 4 ZIP codes. The Hayward, CA frost page lists all of them with their dates.
Last spring frost February 3 · First fall frost January 24 · 355 frost-free days · USDA Zone 10a
ZIP 94541 has about 67,100 people, one of 4 ZIP codes in Hayward.
Very long season: 355 frost-free days.
Frost probability for 94541
| Frost | 10% | 50% | 90% |
|---|---|---|---|
| Spring (last frost) | January 31 | February 3 | — |
| Fall (first frost) | December 6 | January 24 | — |
Dates come from NOAA 1971–2000 freeze probabilities at PALO ALTO (26.0 km away); the 50% date is the median year.
Which crops fit a 355-day season in Hayward
In Hayward (355 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 30 | Feb 17–Feb 24 | 313 | fits: 80 days to maturity, 313 available after Feb 17. | Sep 24 |
| Pepper | Dec 23 | Feb 17–Feb 24 | 313 | fits: 75 days to maturity, 313 available after Feb 17. | Sep 29 |
| Lettuce | Dec 9 | Jan 6–Jan 13 | 390 | two-plantings: Plant Jan 6 and again by Dec 3; both mature before Jan 31. | Dec 3 |
| Carrots | — | Jan 13–Jan 20 | 397 | fits: 70 days to maturity, 397 available after Jan 13. | Nov 22 |
| Cucumber | Jan 13 | Feb 17–Feb 24 | 327 | two-plantings: Plant Feb 17 and again by Oct 28; both mature before Jan 10. | Oct 28 |
| Beans | — | Feb 10–Feb 24 | 341 | two-plantings: Plant Feb 10 and again by Nov 4; both mature before Jan 17. | Nov 4 |
| Peas | — | Dec 9–Feb 17 | 418 | fits: 65 days to maturity, 418 available after Dec 9. | Nov 13 |
| Zucchini | Jan 20 | Feb 17–Feb 24 | 327 | two-plantings: Plant Feb 17 and again by Nov 2; both mature before Jan 10. | Nov 2 |
| Onion | Nov 11 | Jan 6–Jan 20 | 390 | fits: 100 days to maturity, 390 available after Jan 6. | — |
| Spinach | — | Dec 9–Jan 27 | 432 | two-plantings: Plant Dec 9 and again by Dec 22; both mature before Feb 14. | Dec 22 |
| Kale | Nov 25 | Jan 6–Jan 20 | 404 | two-plantings: Plant Jan 6 and again by Dec 7; both mature before Feb 14. | Dec 7 |
| Broccoli | Dec 9 | Jan 6–Jan 20 | 390 | fits: 80 days to maturity, 390 available after Jan 6. | Oct 29 |
| Cabbage | Dec 9 | Jan 6–Jan 20 | 404 | fits: 70 days to maturity, 404 available after Jan 6. | Nov 22 |
| Radish | — | Dec 9–Mar 3 | 418 | two-plantings: Plant Dec 9 and again by Dec 23; both mature before Jan 31. | Dec 23 |
| Beets | — | Dec 9–Mar 3 | 418 | two-plantings: Plant Dec 9 and again by Nov 23; both mature before Jan 31. | Nov 23 |
| Potatoes | — | Jan 20–Jan 27 | 376 | fits: 90 days to maturity, 376 available after Jan 20. | — |
| Garlic | — | Jan 24 | 460 | overwinter: Plant Jan 24 to Feb 14; harvest the following summer. | Feb 14 |
| Strawberry | — | Dec 30–Feb 24 | 411 | perennial: A perennial: plant Dec 30; it fruits from the following year and keeps producing for several years. | — |
| Corn | Jan 6 | Feb 10–Feb 17 | 327 | fits: 75 days to maturity, 327 available after Feb 10. | Oct 6 |
| Pumpkin | Jan 20 | Feb 17–Feb 17 | 320 | fits: 100 days to maturity, 320 available after Feb 17. | Sep 11 |
| Cauliflower | Dec 23 | Jan 27–Feb 10 | 369 | fits: 75 days to maturity, 369 available after Jan 27. | Nov 3 |
| Swiss Chard | Dec 9 | Jan 20–Jan 20 | 376 | two-plantings: Plant Jan 20 and again by Nov 23; both mature before Jan 31. | Nov 23 |
| Arugula | — | Dec 9–Mar 3 | 432 | two-plantings: Plant Dec 9 and again by Dec 22; both mature before Feb 14. | Dec 22 |
| Brussel Sprouts | Dec 9 | Jan 6–Jan 20 | 404 | fits: 100 days to maturity, 404 available after Jan 6. | Oct 23 |
| Butternut Squash | Jan 20 | Feb 17–Feb 24 | 320 | fits: 100 days to maturity, 320 available after Feb 17. | Sep 11 |
| Eggplant | Dec 16 | Feb 17–Feb 24 | 313 | fits: 70 days to maturity, 313 available after Feb 17. | Oct 4 |
| Okra | Jan 6 | Feb 10–Feb 17 | 334 | two-plantings: Plant Feb 10 and again by Nov 2; both mature before Jan 10. | Nov 2 |
| Basil | Dec 30 | Feb 24–Feb 24 | 320 | two-plantings: Plant Feb 24 and again by Oct 28; both mature before Jan 10. | Oct 28 |
| Cilantro | — | Jan 6–Jan 27 | 390 | two-plantings: Plant Jan 6 and again by Nov 28; both mature before Jan 31. | Nov 28 |
| Parsley | Nov 25 | Feb 10–Feb 17 | 355 | fits: 70 days to maturity, 355 available after Feb 10. | Nov 8 |
| Celery | Nov 25 | Feb 10–Feb 24 | 355 | fits: 120 days to maturity, 355 available after Feb 10. | Sep 19 |
| Scallions | Nov 25 | Jan 6–Jan 20 | 404 | two-plantings: Plant Jan 6 and again by Dec 2; both mature before Feb 14. | Dec 2 |
| Turnip | — | Jan 6–Jan 20 | 404 | two-plantings: Plant Jan 6 and again by Dec 12; both mature before Feb 14. | Dec 12 |
| Kohlrabi | — | Dec 23–Jan 6 | 418 | two-plantings: Plant Dec 23 and again by Dec 7; both mature before Feb 14. | Dec 7 |
| Bok Choy | Jan 6 | Jan 27–Feb 3 | 369 | two-plantings: Plant Jan 27 and again by Dec 3; both mature before Jan 31. | Dec 3 |
| Collards | Nov 25 | Jan 6–Jan 20 | 404 | two-plantings: Plant Jan 6 and again by Dec 2; both mature before Feb 14. | Dec 2 |
| Cantaloupe | Jan 20 | Feb 17–Feb 24 | 313 | fits: 85 days to maturity, 313 available after Feb 17. | Sep 19 |
| Chives | Nov 11 | Feb 10–Feb 17 | 369 | fits: 90 days to maturity, 369 available after Feb 10. | — |
| Dill | — | Dec 9–Mar 3 | 418 | two-plantings: Plant Dec 9 and again by Nov 23; both mature before Jan 31. | Nov 23 |
| Oregano | Nov 25 | Feb 10–Feb 17 | 369 | fits: 80 days to maturity, 369 available after Feb 10. | — |
| Rosemary | Nov 11 | Feb 10–Feb 17 | 355 | fits: 80 days to maturity, 355 available after Feb 10. | — |
| Sage | Dec 9 | Feb 10–Feb 17 | 369 | fits: 75 days to maturity, 369 available after Feb 10. | — |
| Thyme | Nov 25 | Feb 10–Feb 17 | 369 | fits: 90 days to maturity, 369 available after Feb 10. | — |
| Calendula | Dec 23 | Jan 20–Feb 3 | 376 | two-plantings: Plant Jan 20 and again by Nov 28; both mature before Jan 31. | Nov 28 |
| Cosmos | Jan 6 | Feb 3–Feb 17 | 341 | two-plantings: Plant Feb 3 and again by Oct 28; both mature before Jan 10. | Oct 28 |
| Lavender | Nov 11 | Feb 3–Feb 17 | 376 | fits: 90 days to maturity, 376 available after Feb 3. | — |
| Marigolds | Dec 23 | Feb 3–Feb 10 | 341 | two-plantings: Plant Feb 3 and again by Nov 7; both mature before Jan 10. | Nov 7 |
| Melons | Jan 20 | Feb 17–Feb 24 | 313 | fits: 85 days to maturity, 313 available after Feb 17. | Sep 19 |
| Mint | — | Feb 3–Feb 17 | 376 | fits: 90 days to maturity, 376 available after Feb 3. | — |
| Nasturtiums | Jan 6 | Feb 3–Feb 10 | 341 | two-plantings: Plant Feb 3 and again by Nov 2; both mature before Jan 10. | Nov 2 |
| Pole Beans | — | Feb 10–Feb 24 | 334 | fits: 65 days to maturity, 334 available after Feb 10. | Oct 23 |
| Spaghetti Squash | Jan 20 | Feb 17–Feb 24 | 320 | fits: 90 days to maturity, 320 available after Feb 17. | Sep 21 |
| Sunflowers | — | Feb 3–Feb 17 | 341 | fits: 70 days to maturity, 341 available after Feb 3. | Oct 18 |
| Tomatillos | Dec 9 | Feb 10–Feb 17 | 320 | fits: 75 days to maturity, 320 available after Feb 10. | Sep 29 |
| Watermelon | Jan 20 | Feb 10–Feb 17 | 320 | fits: 80 days to maturity, 320 available after Feb 10. | Sep 24 |
| Yellow Squash | Jan 20 | Feb 17–Feb 24 | 327 | two-plantings: Plant Feb 17 and again by Nov 2; both mature before Jan 10. | Nov 2 |
| Zinnias | Jan 6 | Feb 3–Feb 17 | 341 | two-plantings: Plant Feb 3 and again by Oct 28; both mature before Jan 10. | Oct 28 |
Month by month in Hayward
| Month | What to do |
|---|---|
| January | Start indoors: Bok Choy (Jan 6), Corn (Jan 6), Cosmos (Jan 6), Nasturtiums (Jan 6), Okra (Jan 6), Zinnias (Jan 6), +9 more. Direct sow from: Cilantro (Jan 6), Turnip (Jan 6), Carrots (Jan 13), Potatoes (Jan 20), Garlic (Jan 24). Transplant from: Broccoli (Jan 6), Brussel Sprouts (Jan 6), Cabbage (Jan 6), Collards (Jan 6), Kale (Jan 6), Lettuce (Jan 6), +6 more. First frost around January 24. |
| February | Direct sow from: Sunflowers (Feb 3), Beans (Feb 10), Pole Beans (Feb 10). Transplant from: Cosmos (Feb 3), Lavender (Feb 3), Marigolds (Feb 3), Mint (Feb 3), Nasturtiums (Feb 3), Zinnias (Feb 3), +23 more. Last frost around February 3. Last sowing dates: Garlic (Feb 14). |
| March | Transplant warm-season crops outdoors. Sow beans, cucumbers, and squash. |
| April | Main warm-season planting window. Direct sow melons and sweet corn. |
| May | Succession plant lettuce. Keep beds irrigated as temperatures climb. |
| June | Monitor for heat stress. Harvest zucchini and cucumbers frequently. |
| July | Harvest regularly to encourage continued production. Watch for pests. |
| August | Start fall cool-season crops: broccoli, kale, beets, and carrots. |
| September | Last sowing dates: Butternut Squash (Sep 11), Pumpkin (Sep 11), Cantaloupe (Sep 19), Celery (Sep 19), Melons (Sep 19), Spaghetti Squash (Sep 21), +4 more. |
| October | Last sowing dates: Eggplant (Oct 4), Corn (Oct 6), Sunflowers (Oct 18), Brussel Sprouts (Oct 23), Pole Beans (Oct 23), Basil (Oct 28), +4 more. |
| November | Start indoors: Chives (Nov 11), Lavender (Nov 11), Onion (Nov 11), Rosemary (Nov 11), Celery (Nov 25), Collards (Nov 25), +5 more. Last sowing dates: Nasturtiums (Nov 2), Okra (Nov 2), Yellow Squash (Nov 2), Zucchini (Nov 2), Cauliflower (Nov 3), Beans (Nov 4), +10 more. |
| December | Start indoors: Broccoli (Dec 9), Brussel Sprouts (Dec 9), Cabbage (Dec 9), Lettuce (Dec 9), Sage (Dec 9), Swiss Chard (Dec 9), +8 more. Direct sow from: Arugula (Dec 9), Beets (Dec 9), Dill (Dec 9), Peas (Dec 9), Radish (Dec 9), Spinach (Dec 9), +1 more. Plant: Strawberry (Dec 30). Last sowing dates: Collards (Dec 2), Scallions (Dec 2), Bok Choy (Dec 3), Lettuce (Dec 3), Kale (Dec 7), Kohlrabi (Dec 7), +4 more. |
Frequently Asked Questions
What is the last frost date for Hayward, CA (ZIP 94541)?
The median last spring frost date for Hayward, CA (ZIP code 94541) is around February 3. 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 Hayward, CA?
The median first fall frost date for Hayward, CA is around January 24. 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 6 in the earliest one-in-ten years, so cover tomatoes and peppers from then.
How long is the growing season in Hayward, CA?
The frost-free growing season in Hayward is about 355 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 Hayward (355 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 Hayward, CA?
Hayward, CA 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 Hayward, CA?
Start tomatoes indoors Dec 30 and plant out Feb 17 in Hayward. The planner uses the local median last frost and this crop's indoor-start and transplant offsets.
How many plantings of lettuce fit in Hayward?
Two: plant Jan 6 and again by Dec 3; both mature before Jan 31.
When do I plant garlic in Hayward?
Jan 24 to Feb 14; it overwinters and is ready the following summer.
Can I get two tomato crops in Hayward?
Yes: plant out Feb 17 for a summer crop, and set out a second round of transplants by Sep 24 for a fall crop.
Which nearby ZIP has a longer season?
Castro Valley (ZIP 94546) has 365 frost-free days, 10 more than Hayward (ZIP 94541). See Castro Valley ZIP 94546 frost dates
Nearby and related
- Frost dates for San Lorenzo, CA 94580 (2.5 mi)
- Frost dates for Hayward, CA 94544 (3.2 mi)
- Frost dates for Castro Valley, CA 94546 (4.2 mi)
- Frost dates for San Leandro, CA 94577 (5.2 mi)
- Frost dates for Union City, CA 94587 (5.8 mi)
- When to plant in CA
- When to plant Peppers in CA
- When to plant Cucumbers in CA
- When to plant Zucchini in CA
- When to plant Butternut Squash in CA
- When to plant Basil in CA
- When to plant Sweet Corn in CA
- Look up another ZIP