Frost Dates for San Jose, CA 95124
San Jose has 28 ZIP codes. The San Jose, CA frost page lists all of them with their dates.
Last spring frost February 7 · First fall frost December 17 · 313 frost-free days · USDA Zone 9b
ZIP 95124 has about 52,100 people, one of 28 ZIP codes in San Jose.
Very long season: 313 frost-free days. Spring frost risk spans January 13–March 16 (62 days).
Frost probability for 95124
| Frost | 10% | 50% | 90% |
|---|---|---|---|
| Spring (last frost) | March 16 | February 7 | January 13 |
| Fall (first frost) | November 12 | December 17 | — |
Dates come from NOAA 1971–2000 freeze probabilities at SANTA CRUZ (30.7 km away); the 50% date is the median year.
Which crops fit a 313-day season in San Jose
In San Jose (313 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 | Jan 3 | Feb 21–Feb 28 | 271 | fits: 80 days to maturity, 271 available after Feb 21. | Aug 17 |
| Pepper | Dec 27 | Feb 21–Feb 28 | 271 | fits: 75 days to maturity, 271 available after Feb 21. | Aug 22 |
| Lettuce | Dec 13 | Jan 10–Jan 17 | 348 | two-plantings: Plant Jan 10 and again by Oct 26; both mature before Dec 24. | Oct 26 |
| Carrots | — | Jan 17–Jan 24 | 355 | fits: 70 days to maturity, 355 available after Jan 17. | Oct 15 |
| Cucumber | Jan 17 | Feb 21–Feb 28 | 285 | two-plantings: Plant Feb 21 and again by Sep 20; both mature before Dec 3. | Sep 20 |
| Beans | — | Feb 14–Feb 28 | 299 | two-plantings: Plant Feb 14 and again by Sep 27; both mature before Dec 10. | Sep 27 |
| Peas | — | Dec 13–Feb 21 | 376 | fits: 65 days to maturity, 376 available after Dec 13. | Oct 6 |
| Zucchini | Jan 24 | Feb 21–Feb 28 | 285 | two-plantings: Plant Feb 21 and again by Sep 25; both mature before Dec 3. | Sep 25 |
| Onion | Nov 15 | Jan 10–Jan 24 | 348 | fits: 100 days to maturity, 348 available after Jan 10. | — |
| Spinach | — | Dec 13–Jan 31 | 390 | two-plantings: Plant Dec 13 and again by Nov 14; both mature before Jan 7. | Nov 14 |
| Kale | Nov 29 | Jan 10–Jan 24 | 362 | two-plantings: Plant Jan 10 and again by Oct 30; both mature before Jan 7. | Oct 30 |
| Broccoli | Dec 13 | Jan 10–Jan 24 | 348 | fits: 80 days to maturity, 348 available after Jan 10. | Sep 21 |
| Cabbage | Dec 13 | Jan 10–Jan 24 | 362 | fits: 70 days to maturity, 362 available after Jan 10. | Oct 15 |
| Radish | — | Dec 13–Mar 7 | 376 | two-plantings: Plant Dec 13 and again by Nov 15; both mature before Dec 24. | Nov 15 |
| Beets | — | Dec 13–Mar 7 | 376 | two-plantings: Plant Dec 13 and again by Oct 16; both mature before Dec 24. | Oct 16 |
| Potatoes | — | Jan 24–Jan 31 | 334 | fits: 90 days to maturity, 334 available after Jan 24. | — |
| Garlic | — | Dec 17 | 418 | overwinter: Plant Dec 17 to Jan 7; harvest the following summer. | Jan 7 |
| Strawberry | — | Jan 3–Feb 28 | 369 | perennial: A perennial: plant Jan 3; it fruits from the following year and keeps producing for several years. | — |
| Corn | Jan 10 | Feb 14–Feb 21 | 285 | fits: 75 days to maturity, 285 available after Feb 14. | Aug 29 |
| Pumpkin | Jan 24 | Feb 21–Feb 21 | 278 | fits: 100 days to maturity, 278 available after Feb 21. | Aug 4 |
| Cauliflower | Dec 27 | Jan 31–Feb 14 | 327 | fits: 75 days to maturity, 327 available after Jan 31. | Sep 26 |
| Swiss Chard | Dec 13 | Jan 24–Jan 24 | 334 | two-plantings: Plant Jan 24 and again by Oct 16; both mature before Dec 24. | Oct 16 |
| Arugula | — | Dec 13–Mar 7 | 390 | two-plantings: Plant Dec 13 and again by Nov 14; both mature before Jan 7. | Nov 14 |
| Brussel Sprouts | Dec 13 | Jan 10–Jan 24 | 362 | fits: 100 days to maturity, 362 available after Jan 10. | Sep 15 |
| Butternut Squash | Jan 24 | Feb 21–Feb 28 | 278 | fits: 100 days to maturity, 278 available after Feb 21. | Aug 4 |
| Eggplant | Dec 20 | Feb 21–Feb 28 | 271 | fits: 70 days to maturity, 271 available after Feb 21. | Aug 27 |
| Okra | Jan 10 | Feb 14–Feb 21 | 292 | two-plantings: Plant Feb 14 and again by Sep 25; both mature before Dec 3. | Sep 25 |
| Basil | Jan 3 | Feb 28–Feb 28 | 278 | two-plantings: Plant Feb 28 and again by Sep 20; both mature before Dec 3. | Sep 20 |
| Cilantro | — | Jan 10–Jan 31 | 348 | two-plantings: Plant Jan 10 and again by Oct 21; both mature before Dec 24. | Oct 21 |
| Parsley | Nov 29 | Feb 14–Feb 21 | 313 | fits: 70 days to maturity, 313 available after Feb 14. | Oct 1 |
| Celery | Nov 29 | Feb 14–Feb 28 | 313 | fits: 120 days to maturity, 313 available after Feb 14. | Aug 12 |
| Scallions | Nov 29 | Jan 10–Jan 24 | 362 | two-plantings: Plant Jan 10 and again by Oct 25; both mature before Jan 7. | Oct 25 |
| Turnip | — | Jan 10–Jan 24 | 362 | two-plantings: Plant Jan 10 and again by Nov 4; both mature before Jan 7. | Nov 4 |
| Kohlrabi | — | Dec 27–Jan 10 | 376 | two-plantings: Plant Dec 27 and again by Oct 30; both mature before Jan 7. | Oct 30 |
| Bok Choy | Jan 10 | Jan 31–Feb 7 | 327 | two-plantings: Plant Jan 31 and again by Oct 26; both mature before Dec 24. | Oct 26 |
| Collards | Nov 29 | Jan 10–Jan 24 | 362 | two-plantings: Plant Jan 10 and again by Oct 25; both mature before Jan 7. | Oct 25 |
| Cantaloupe | Jan 24 | Feb 21–Feb 28 | 271 | fits: 85 days to maturity, 271 available after Feb 21. | Aug 12 |
| Chives | Nov 15 | Feb 14–Feb 21 | 327 | fits: 90 days to maturity, 327 available after Feb 14. | — |
| Dill | — | Dec 13–Mar 7 | 376 | two-plantings: Plant Dec 13 and again by Oct 16; both mature before Dec 24. | Oct 16 |
| Oregano | Nov 29 | Feb 14–Feb 21 | 327 | fits: 80 days to maturity, 327 available after Feb 14. | — |
| Rosemary | Nov 15 | Feb 14–Feb 21 | 313 | fits: 80 days to maturity, 313 available after Feb 14. | — |
| Sage | Dec 13 | Feb 14–Feb 21 | 327 | fits: 75 days to maturity, 327 available after Feb 14. | — |
| Thyme | Nov 29 | Feb 14–Feb 21 | 327 | fits: 90 days to maturity, 327 available after Feb 14. | — |
| Calendula | Dec 27 | Jan 24–Feb 7 | 334 | two-plantings: Plant Jan 24 and again by Oct 21; both mature before Dec 24. | Oct 21 |
| Cosmos | Jan 10 | Feb 7–Feb 21 | 299 | two-plantings: Plant Feb 7 and again by Sep 20; both mature before Dec 3. | Sep 20 |
| Lavender | Nov 15 | Feb 7–Feb 21 | 334 | fits: 90 days to maturity, 334 available after Feb 7. | — |
| Marigolds | Dec 27 | Feb 7–Feb 14 | 299 | two-plantings: Plant Feb 7 and again by Sep 30; both mature before Dec 3. | Sep 30 |
| Melons | Jan 24 | Feb 21–Feb 28 | 271 | fits: 85 days to maturity, 271 available after Feb 21. | Aug 12 |
| Mint | — | Feb 7–Feb 21 | 334 | fits: 90 days to maturity, 334 available after Feb 7. | — |
| Nasturtiums | Jan 10 | Feb 7–Feb 14 | 299 | two-plantings: Plant Feb 7 and again by Sep 25; both mature before Dec 3. | Sep 25 |
| Pole Beans | — | Feb 14–Feb 28 | 292 | fits: 65 days to maturity, 292 available after Feb 14. | Sep 15 |
| Spaghetti Squash | Jan 24 | Feb 21–Feb 28 | 278 | fits: 90 days to maturity, 278 available after Feb 21. | Aug 14 |
| Sunflowers | — | Feb 7–Feb 21 | 299 | fits: 70 days to maturity, 299 available after Feb 7. | Sep 10 |
| Tomatillos | Dec 13 | Feb 14–Feb 21 | 278 | fits: 75 days to maturity, 278 available after Feb 14. | Aug 22 |
| Watermelon | Jan 24 | Feb 14–Feb 21 | 278 | fits: 80 days to maturity, 278 available after Feb 14. | Aug 17 |
| Yellow Squash | Jan 24 | Feb 21–Feb 28 | 285 | two-plantings: Plant Feb 21 and again by Sep 25; both mature before Dec 3. | Sep 25 |
| Zinnias | Jan 10 | Feb 7–Feb 21 | 299 | two-plantings: Plant Feb 7 and again by Sep 20; both mature before Dec 3. | Sep 20 |
Month by month in San Jose
| Month | What to do |
|---|---|
| January | Start indoors: Basil (Jan 3), Tomato (Jan 3), Bok Choy (Jan 10), Corn (Jan 10), Cosmos (Jan 10), Nasturtiums (Jan 10), +11 more. Direct sow from: Cilantro (Jan 10), Turnip (Jan 10), Carrots (Jan 17), Potatoes (Jan 24). Transplant from: Broccoli (Jan 10), Brussel Sprouts (Jan 10), Cabbage (Jan 10), Collards (Jan 10), Kale (Jan 10), Lettuce (Jan 10), +6 more. Plant: Strawberry (Jan 3). Last sowing dates: Garlic (Jan 7). |
| February | Direct sow from: Sunflowers (Feb 7), Beans (Feb 14), Pole Beans (Feb 14). Transplant from: Cosmos (Feb 7), Lavender (Feb 7), Marigolds (Feb 7), Mint (Feb 7), Nasturtiums (Feb 7), Zinnias (Feb 7), +23 more. Last frost around February 7. |
| March | Frost has passed. Transplant tomatoes, peppers, and basil outdoors. Direct sow beans, cucumbers, squash, and zucchini. |
| April | Succession plant lettuce and greens. Keep beds weeded and watered consistently. |
| May | Harvest regularly to encourage production. Monitor for pests and disease. |
| June | Midsummer: harvest beans, zucchini, cucumbers. Start brassica seeds indoors for fall. |
| July | Direct sow carrots and beets for fall harvest. Start fall broccoli and kale indoors. |
| August | Last sowing dates: Butternut Squash (Aug 4), Pumpkin (Aug 4), Cantaloupe (Aug 12), Celery (Aug 12), Melons (Aug 12), Spaghetti Squash (Aug 14), +6 more. |
| September | Last sowing dates: Sunflowers (Sep 10), Brussel Sprouts (Sep 15), Pole Beans (Sep 15), Basil (Sep 20), Cosmos (Sep 20), Cucumber (Sep 20), +9 more. |
| October | Last sowing dates: Parsley (Oct 1), Peas (Oct 6), Cabbage (Oct 15), Carrots (Oct 15), Beets (Oct 16), Dill (Oct 16), +9 more. |
| November | Start indoors: Chives (Nov 15), Lavender (Nov 15), Onion (Nov 15), Rosemary (Nov 15), Celery (Nov 29), Collards (Nov 29), +5 more. Last sowing dates: Turnip (Nov 4), Arugula (Nov 14), Spinach (Nov 14), Radish (Nov 15). |
| December | Start indoors: Broccoli (Dec 13), Brussel Sprouts (Dec 13), Cabbage (Dec 13), Lettuce (Dec 13), Sage (Dec 13), Swiss Chard (Dec 13), +6 more. Direct sow from: Arugula (Dec 13), Beets (Dec 13), Dill (Dec 13), Peas (Dec 13), Radish (Dec 13), Spinach (Dec 13), +2 more. First frost around December 17. |
Frequently Asked Questions
What is the last frost date for San Jose, CA (ZIP 95124)?
The median last spring frost date for San Jose, CA (ZIP code 95124) is around February 7. 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 January 13; one in ten it runs past March 16.
What is the first fall frost date in San Jose, CA?
The median first fall frost date for San Jose, CA is around December 17. 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 November 12 in the earliest one-in-ten years, so cover tomatoes and peppers from then.
How long is the growing season in San Jose, CA?
The frost-free growing season in San Jose is about 313 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 San Jose (313 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 San Jose, CA?
San Jose, CA is in USDA hardiness zone 9b (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 San Jose, CA?
Start tomatoes indoors Jan 3 and plant out Feb 21 in San Jose. The planner uses the local median last frost and this crop's indoor-start and transplant offsets.
How many plantings of lettuce fit in San Jose?
Two: plant Jan 10 and again by Oct 26; both mature before Dec 24.
When do I plant garlic in San Jose?
Dec 17 to Jan 7; it overwinters and is ready the following summer.
Can I get two tomato crops in San Jose?
Yes: plant out Feb 21 for a summer crop, and set out a second round of transplants by Aug 17 for a fall crop.
Nearby and related
- Frost dates for Campbell, CA 95008 (2.4 mi)
- Frost dates for Los Gatos, CA 95032 (3.3 mi)
- Frost dates for San Jose, CA 95123 (5 mi)
- Frost dates for Saratoga, CA 95070 (7.1 mi)
- Frost dates for Santa Clara, CA 95051 (7.2 mi)
- When to plant in San Jose, CA: month-by-month guide
- 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