San Simeon, CA frost dates
Last spring frostFeb 13median date
First fall frostFeb 1median date
Growing season353 daysfrost-free
Hardiness zone10aZone 10a
Frost is light and occasional here — typically a few cold nights around midwinter (about 1 a year). Cover tender plants when frost is forecast.
How San Simeon compares
- In a typical year, frost nights in San Simeon fall between February 1 and February 13. In 1 year in 10 the first frost comes as early as December 16, or the last frost as late as March 31.
- Compared with Santa Maria, CA, 104 km away, the last frost here is 9 days later than there.
Frost probability
| Chance of frost after | Date |
|---|---|
| 90% (early) | December 29 |
| 50% (median) | February 13 |
| 10% (safe for tender plants) | March 31 |
| Chance of frost before | Date |
|---|---|
| 10% (early) | December 16 |
| 50% (median) | February 1 |
| 90% (late) | March 20 |
Frost here means 32°F (0°C). A median date means half of years have their last frost earlier and half later.
Planting calendar for San Simeon, CA
San Simeon, CA frost dates — last frost Feb 13, first frost Feb 1, zone 10a. whenisthelastfrost.com
In mild climates, summer heat limits many crops as much as frost does. Use this calendar for spring planting and lean on fall and winter for cool-season crops.
Crop
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Start indoors: Nov 21 to Dec 5Transplant outside: Jan 16 to Jan 30
Start indoors: Dec 5 to Dec 19Transplant outside: Feb 27 to Mar 13
Start indoors: Dec 5 to Dec 19Transplant outside: Feb 27 to Mar 13
Start indoors: Dec 19 to Jan 2Start indoors: Dec 19 to Jan 2Transplant outside: Feb 20 to Mar 6
Start indoors: Dec 19 to Jan 2Start indoors: Dec 19 to Jan 2Transplant outside: Jan 23 to Feb 6Sow outdoors: Jan 16 to Feb 20Plant for fall: Dec 7 to Jan 4Plant for fall: Dec 7 to Jan 4
Start indoors: Dec 19 to Jan 2Start indoors: Dec 19 to Jan 2Transplant outside: Jan 16 to Jan 30Sow outdoors: Jan 16 to Jan 30Plant for fall: Nov 23 to Dec 14
Start indoors: Dec 19 to Jan 2Start indoors: Dec 19 to Jan 2Transplant outside: Jan 30 to Feb 13Plant for fall: Oct 26 to Nov 16
Start indoors: Dec 19 to Jan 2Start indoors: Dec 19 to Jan 2Transplant outside: Jan 23 to Feb 6Plant for fall: Oct 26 to Nov 16
Start indoors: Dec 19 to Jan 2Start indoors: Dec 19 to Jan 2Transplant outside: Jan 30 to Feb 13Plant for fall: Oct 26 to Nov 16
Start indoors: Jan 2 to Jan 16Transplant outside: Mar 6 to Mar 20Sow outdoors: Mar 6 to Mar 20
Start indoors: Jan 2 to Jan 16Transplant outside: Feb 20 to Mar 6
Sow outdoors: Jan 2 to Jan 23Plant for fall: Nov 9 to Nov 30
Sow outdoors: Jan 2 to Jan 23Plant for fall: Dec 7 to Dec 28
Sow outdoors: Jan 9 to Feb 20Plant for fall: Dec 21 to Jan 11Plant for fall: Dec 21 to Jan 11
Start indoors: Jan 16 to Jan 23Transplant outside: Feb 27 to Mar 6Sow outdoors: Feb 20 to Mar 6Plant for fall: Nov 16 to Nov 30
Start indoors: Jan 16 to Jan 23Sow outdoors: Feb 20 to Mar 6Plant for fall: Nov 23 to Dec 7
Start indoors: Jan 16 to Jan 23Sow outdoors: Feb 20 to Mar 6
Start indoors: Jan 16 to Jan 23Transplant outside: Feb 27 to Mar 13
Sow outdoors: Jan 23 to Feb 20Plant for fall: Nov 9 to Nov 23
Sow outdoors: Jan 23 to Feb 20Plant for fall: Nov 23 to Dec 7
Sow outdoors: Jan 23 to Feb 13
Sow outdoors: Jan 30 to Feb 27Plant for fall: Nov 23 to Dec 7
Sow outdoors: Jan 30 to Feb 20Plant for fall: Dec 7 to Dec 28
Sow outdoors: Feb 20 to Mar 13Plant for fall: Nov 16 to Nov 30
Sow outdoors: Feb 20 to Mar 6
Transplant outside: Feb 27 to Mar 20
Plant for fall: Jan 18 to Feb 22
Start indoorsTransplant outsideSow outdoorsPlant for fallMedian frost dates
When to plant vegetables in San Simeon, CA
| Crop | Start indoors | Transplant | Sow outdoors | Fall crop |
|---|---|---|---|---|
| Onions | Nov 21 – Dec 5 | Jan 16 – Jan 30 | — | — |
| Peppers | Dec 5 – Dec 19 | Feb 27 – Mar 13 | — | — |
| Eggplant | Dec 5 – Dec 19 | Feb 27 – Mar 13 | — | — |
| Tomatoes | Dec 19 – Jan 2 | Feb 20 – Mar 6 | — | — |
| Lettuce | Dec 19 – Jan 2 | Jan 23 – Feb 6 | Jan 16 – Feb 20 | Dec 7 – Jan 4 |
| Kale | Dec 19 – Jan 2 | Jan 16 – Jan 30 | Jan 16 – Jan 30 | Nov 23 – Dec 14 |
| Broccoli | Dec 19 – Jan 2 | Jan 30 – Feb 13 | — | Oct 26 – Nov 16 |
| Cabbage | Dec 19 – Jan 2 | Jan 23 – Feb 6 | — | Oct 26 – Nov 16 |
| Cauliflower | Dec 19 – Jan 2 | Jan 30 – Feb 13 | — | Oct 26 – Nov 16 |
| Okra | Jan 2 – Jan 16 | Mar 6 – Mar 20 | Mar 6 – Mar 20 | — |
| Basil | Jan 2 – Jan 16 | Feb 20 – Mar 6 | — | — |
| Peas | — | — | Jan 2 – Jan 23 | Nov 9 – Nov 30 |
| Spinach | — | — | Jan 2 – Jan 23 | Dec 7 – Dec 28 |
| Radishes | — | — | Jan 9 – Feb 20 | Dec 21 – Jan 11 |
| Cucumbers | Jan 16 – Jan 23 | Feb 27 – Mar 6 | Feb 20 – Mar 6 | Nov 16 – Nov 30 |
| Zucchini & Summer Squash | Jan 16 – Jan 23 | — | Feb 20 – Mar 6 | Nov 23 – Dec 7 |
| Winter Squash & Pumpkins | Jan 16 – Jan 23 | — | Feb 20 – Mar 6 | — |
| Melons & Watermelon | Jan 16 – Jan 23 | Feb 27 – Mar 13 | — | — |
| Carrots | — | — | Jan 23 – Feb 20 | Nov 9 – Nov 23 |
| Beets | — | — | Jan 23 – Feb 20 | Nov 23 – Dec 7 |
| Potatoes | — | — | Jan 23 – Feb 13 | — |
| Swiss Chard | — | — | Jan 30 – Feb 27 | Nov 23 – Dec 7 |
| Cilantro | — | — | Jan 30 – Feb 20 | Dec 7 – Dec 28 |
| Green Beans | — | — | Feb 20 – Mar 13 | Nov 16 – Nov 30 |
| Sweet Corn | — | — | Feb 20 – Mar 6 | — |
| Sweet Potatoes | — | Feb 27 – Mar 20 | — | — |
| Garlic | — | — | — | Jan 18 – Feb 22 |
Dates come from the median frost dates and common extension-service timing. Adjust for your soil temperature, microclimate and the varieties you grow.
About these dates
Based on 1991–2020 NOAA climate normals for the Hearst Castle, CA weather station, 3 km away (elevation 1,526 ft (465 m)).
Frost dates near San Simeon
- Cambria Feb 13 · Feb 1
- Bradley Feb 13 · Feb 1
- Harmony Jan 19 · Jan 14
- Lockwood Feb 23 · Nov 22
- Cayucos Jan 19 · Jan 14
- Jolon Feb 23 · Nov 22
- Paso Robles Apr 4 · Nov 5
- Templeton Mar 15 · Nov 10
- Morro Bay Jan 19 · Jan 14
- San Ardo May 8 · Oct 22
Frequently asked questions
When is the last frost in San Simeon, CA?
The median last spring frost in San Simeon, CA is February 13. There is still about a 10% chance of frost after March 31, so wait until then to plant frost-tender crops like tomatoes and peppers.
When is the first frost in San Simeon, CA?
The median first fall frost is February 1, with about a 10% chance of frost before December 16.
How long is the growing season in San Simeon, CA?
About 353 days between the median last spring frost and first fall frost.
What planting zone is San Simeon, CA?
San Simeon, CA is in USDA hardiness zone 10a.