Frost dates for ZIP 93433 (Grover Beach, CA)
Average last spring and first fall frost dates with 10%, 50% and 90% odds, from NOAA's 1991–2020 climate normals for the nearest weather station, Pismo Beach, CA (4 miles away).
Freezes are uncommon here
NOAA's normals for this station show a 32°F night in about 54% of years (about 2 freezing night(s) a year on average). The dates below describe freeze timing for the station's record; in many years there may be no 32°F freeze at all.
- Average last spring frostFeb 150% chance of a 32°F freeze after this date
- Average first fall frostJan 4 (next year)50% chance of a 32°F freeze by this date
- Growing season (frost-free)362 daysmedian, 32°F threshold
- USDA hardiness zone10a30 to 35°F avg. coldest night
This week in your yard
As of Oct 18, 2026, from your frost dates, zone and soil temperature. Lawn timing · Vegetables · Pruning · Plants
Fall in zone 10a
Freezes are uncommon here, so frost-based timing is rough. Local extension calendars for frost-free areas use months.
Soil temperature now
2-inch depth
78°F 55°F or warmer
24-hour average · latest 65°F, as of Oct 18, 8:00 AM CDT
Estimate Not a measurement at this ZIP: distance-weighted average of Cochora Ranch (58 mi).
4-inch depth
77°F 55°F or warmer
24-hour average · latest 71°F, as of Oct 18, 8:00 AM CDT
Estimate Not a measurement at this ZIP: distance-weighted average of Cochora Ranch (58 mi).
Fall: Texas A&M AgriLife times fall pre-emergent (for winter weeds such as annual bluegrass) to soil cooling to about 70°F for several days. The 50–55°F band is the spring trigger. Always read and follow the product label.
7-day forecast and frost risk
The latest National Weather Service 7-day forecast and any Frost Advisory or Freeze Warning for 93433 load here. You can also open the NWS forecast for this ZIP.
Pre-emergent
Soil is 77°F at 4 inches (estimated soil temperature, not a station reading). Fall pre-emergent (annual bluegrass, winter weeds): not yet. Apply as soil cools toward 70°F (typically September to October).
Fertilizer window
Lawn region: California coastal and valleys. Timing only; always follow the product label.
- Bermudagrass (warm-season): Spring: Several weeks after the lawn is fully green (April–May) (about Mar 19 here, using green-up about 3–4 weeks after your average last frost); Summer: Every 4–6 weeks through mid-August (heaviest feeder of the group); Late: Light, low-nitrogen/high-potassium feeding about 4 weeks before first frost, or skip. Avoid: Heavy late-fall nitrogen (linked to spring dead spot).
- Tall fescue (cool-season): Early fall: September (main feeding); Late fall: November, while still green; Late winter: Optional light feeding February–March. Avoid: Feeding after mid-spring and through summer in the transition zone (stress and brown patch).
Plant now
- Kale: fall sowing Sep 28–Oct 26
- Kale: fall transplant Oct 12–Nov 9
- Collards: fall sowing Sep 28–Oct 26
- Collards: fall transplant Oct 12–Nov 9
- Broccoli: fall transplant Sep 28–Oct 26
- Cabbage: fall transplant Sep 28–Oct 26
- Cauliflower: fall transplant Sep 28–Oct 26
- Carrot: fall sowing Oct 12–26
- Pea (garden, snap, snow): fall sowing Oct 12–26
- Bean, bush (snap): fall sowing Oct 12–26
- Cucumber: fall sowing Oct 12–26
- Summer squash / zucchini: fall sowing Oct 12–26
Coming up in the next 3 weeks
- Lettuce: fall sowing Oct 26–Nov 23
- Kohlrabi: fall sowing Oct 26–Nov 9
- Swiss chard: fall sowing Oct 26–Nov 9
- Beet: fall sowing Oct 26–Nov 9
- Turnip: fall sowing Oct 26–Nov 9
- Green onion / scallion: fall sowing Oct 26–Nov 9
- Strawberry (plants): fall transplant Oct 26–Nov 23
Prune now
No frost-timed pruning windows are open this week.
Spring-flowering shrubs are pruned right after their flowers fade, not by date. See the pruning guide.
Last spring frost odds
| Chance of a 32°F freeze after this date | Date |
|---|---|
| 90% (early: most years still freeze after this) | Dec 18 (prior Dec) |
| 50% (the "average" last frost) | Feb 1 |
| 10% (cautious: only 1 year in 10 freezes later) | Mar 13 |
Most gardeners plant frost-tender crops (tomatoes, peppers, basil) after the 50% date, and closer to the 10% date for less risk.
First fall frost odds
| Chance the first 32°F freeze has happened by this date | Date |
|---|---|
| 10% (early: 1 year in 10 freezes this soon) | Dec 8 |
| 50% (the "average" first frost) | Jan 4 (next year) |
| 90% (late: most years have frozen by now) | Feb 27 (next year) |
Light frost, freeze and hard freeze
| Threshold | Last spring (50%) | First fall (50%) |
|---|---|---|
| 36°F (light frost possible on clear, calm nights) | Mar 1 | Dec 14 |
| 32°F (freeze) | Feb 1 | Jan 4 (next year) |
| 28°F (hard freeze) | n/a | n/a |
n/a means NOAA did not publish a date at that threshold for this station (usually because it rarely gets that cold).
Vegetable planting calendar for 93433
Dates count from your average last spring frost (Feb 1) and first fall frost (Jan 4). Half of years have a frost after the spring date, so give tender crops (tomatoes, peppers, squash) some slack.
| Crop | Start indoors | Spring planting | Fall planting |
|---|---|---|---|
| Tomato | Dec 7–21 | Feb 8–22 (transplant) | Sep 7–Oct 5 (transplant) |
| Pepper (sweet and hot) | Nov 23–Dec 7 | Feb 15–Mar 1 (transplant) | Sep 14–Oct 5 (transplant) |
| Eggplant | Nov 23–Dec 7 | Feb 15–Mar 1 (transplant) | Sep 14–Oct 5 (transplant) |
| Tomatillo | Dec 7–21 | Feb 8–22 (transplant) | – |
| Lettuce | Dec 7–21 | Jan 11–Feb 1 (transplant) Jan 4–Feb 15 (sow outdoors) | Nov 9–30 (transplant) Oct 26–Nov 23 (sowing) |
| Spinach | – | Dec 21–Jan 11 (sow outdoors) | Nov 9–30 (sowing) |
| Kale | Dec 7–21 | Jan 4–18 (transplant) Jan 4–18 (sow outdoors) | Oct 12–Nov 9 (transplant) Sep 28–Oct 26 (sowing) |
| Collards | Dec 7–21 | Jan 4–Feb 1 (transplant) Jan 4–Feb 1 (sow outdoors) | Oct 12–Nov 9 (transplant) Sep 28–Oct 26 (sowing) |
| Broccoli | Nov 23–Dec 7 | Jan 4–18 (transplant) | Sep 28–Oct 26 (transplant) |
| Cabbage | Nov 23–Dec 7 | Jan 4–18 (transplant) | Sep 28–Oct 26 (transplant) |
| Cauliflower | Nov 23–Dec 7 | Jan 18–Feb 1 (transplant) | Sep 28–Oct 26 (transplant) |
| Brussels sprouts | Nov 9–23 | Jan 4–18 (transplant) | Sep 14–Oct 5 (transplant) |
| Kohlrabi | Dec 7–21 | Jan 4–18 (transplant) Jan 4–18 (sow outdoors) | Oct 26–Nov 9 (sowing) |
| Bok choy / Asian greens | – | Jan 4–18 (sow outdoors) | Nov 9–23 (sowing) |
| Arugula | – | Jan 4–Feb 1 (sow outdoors) | Nov 9–Dec 7 (sowing) |
| Mustard greens | – | Jan 4–25 (sow outdoors) | Nov 9–23 (sowing) |
| Swiss chard | Dec 21–Jan 4 | Jan 18–Feb 8 (transplant) Jan 18–Feb 15 (sow outdoors) | Oct 26–Nov 9 (sowing) |
| Beet | – | Jan 4–Feb 1 (sow outdoors) | Oct 26–Nov 9 (sowing) |
| Carrot | – | Jan 11–Feb 8 (sow outdoors) | Oct 12–26 (sowing) |
| Radish | – | Dec 28–Feb 8 (sow outdoors) | Nov 23–Dec 7 (sowing) |
| Turnip | – | Jan 4–25 (sow outdoors) | Oct 26–Nov 9 (sowing) |
| Parsnip | – | Jan 11–Feb 1 (sow outdoors) | – |
| Pea (garden, snap, snow) | – | Dec 7–Jan 4 (sow outdoors) | Oct 12–26 (sowing) |
| Onion (bulbing) | Nov 9–23 | Dec 21–Jan 4 (transplant) | – |
| Green onion / scallion | – | Dec 21–Jan 18 (sow outdoors) | Oct 26–Nov 9 (sowing) |
| Leek | Nov 9–23 | Jan 4–18 (transplant) | – |
| Garlic | – | – | Nov 23–Dec 21 (sowing) |
| Shallot | – | Dec 21–Jan 4 (transplant) | Nov 23–Dec 21 (sowing) |
| Potato | – | Jan 4–18 (transplant) | Sep 14–28 (transplant) |
| Sweet potato | – | Feb 22–Mar 8 (transplant) | – |
| Sweet corn | – | Feb 8–22 (sow outdoors) | – |
| Bean, bush (snap) | – | Feb 8–22 (sow outdoors) | Oct 12–26 (sowing) |
| Bean, pole | – | Feb 8–22 (sow outdoors) | – |
| Lima bean | – | Feb 15–Mar 1 (sow outdoors) | – |
| Southern pea (cowpea, black-eyed pea) | – | Feb 22–Mar 15 (sow outdoors) | – |
| Cucumber | Jan 4–11 | Feb 8–22 (transplant) Feb 8–22 (sow outdoors) | Oct 12–26 (sowing) |
| Summer squash / zucchini | Jan 4–11 | Feb 8–22 (transplant) Feb 8–22 (sow outdoors) | Oct 12–26 (sowing) |
| Winter squash | Jan 4–11 | Feb 8–22 (transplant) Feb 8–22 (sow outdoors) | – |
| Pumpkin | – | Feb 8–22 (sow outdoors) | – |
| Watermelon | Jan 4–11 | Feb 15–Mar 1 (transplant) Feb 15–Mar 1 (sow outdoors) | – |
| Cantaloupe / muskmelon | Jan 4–11 | Feb 15–Mar 1 (transplant) Feb 15–Mar 1 (sow outdoors) | – |
| Okra | Dec 21–Jan 4 | Feb 15–Mar 1 (transplant) Feb 15–Mar 1 (sow outdoors) | – |
| Celery | Nov 9–23 | Feb 8–15 (transplant) | – |
| Basil | Dec 21–Jan 4 | Feb 8–22 (transplant) Feb 8–22 (sow outdoors) | – |
| Cilantro | – | Jan 18–Feb 15 (sow outdoors) | Nov 9–23 (sowing) |
| Parsley | Nov 23–Dec 7 | Jan 18–Feb 1 (transplant) Jan 11–Feb 1 (sow outdoors) | – |
| Dill | – | Feb 1–15 (sow outdoors) | Nov 9–23 (sowing) |
| Sunflower | – | Feb 1–15 (sow outdoors) | – |
| Asparagus (crowns) | – | Jan 4–18 (transplant) | – |
| Rhubarb (crowns) | – | Jan 4–18 (transplant) | – |
| Strawberry (plants) | – | Jan 4–18 (transplant) | Oct 26–Nov 23 (transplant) |
Typical ranges from university extension planting calendars, adjusted to your frost dates. Probabilities, not guarantees. Fall windows that would overlap spring planting are left out, as are fall crops of frost-tender plants where the frost-free season is under 210 days.
Where these numbers come from
Station: Pismo Beach, CA (NOAA GHCN-Daily ID USC00046943), elevation 39 ft, 4.5 miles from the ZIP's center point. NOAA completeness flag: R (representative, 10+ years).
Nearby stations
| Station | Distance | Last frost (50%) | First frost (50%) |
|---|---|---|---|
| San Luis Obispo AP, CA | 8 mi | Jan 31 | Dec 11 |
| San Luis Obispo Poly, CA | 13 mi | Jan 16 | Dec 25 |
| Santa Maria Public AP, CA | 18 mi | Feb 4 | Dec 13 |
The average last-frost dates of these stations span 19 days, a rough guide to local variation. See data sources & methods.
Frost questions for 93433
When is the last frost in 93433?
The average (50% chance) last spring freeze of 32°F for ZIP 93433 is February 1. For a more cautious planting date, use March 13, when only 1 year in 10 still sees a later freeze.
When is the first frost in 93433?
The average first fall freeze is January 4 (next year). In 1 year in 10 it comes by December 8.
What hardiness zone is 93433?
ZIP 93433 is in USDA zone 10a (30 to 35°F average coldest winter night), per the 2023 USDA Plant Hardiness Zone Map ZIP listing.
What is the soil temperature in 93433 right now?
This page shows the latest 2-inch and 4-inch soil temperature from the nearest public soil station (USDA SCAN, NOAA USCRN or TexMesonet), or a labeled estimate when no station is close, against the 50–55°F spring pre-emergent band.
Nearby ZIP codes
93449 Pismo Beach 93445 Oceano 93401 San Luis Obispo 93444 Nipomo 93420 Arroyo Grande 93424 Avila Beach 93434 Guadalupe 93410 California Polytechnic State University
Other ZIP codes in San Luis Obispo County
93401 93402 93405 93407 93408 93409 93410 93420 93422 93424 93428 93430 93432 93442 93444 93445 93446 93449 93452 93453 93461 93465 All San Luis Obispo County frost dates · California frost dates
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