Herald, CA frost dates
Last spring frostFeb 9median date
First fall frostDec 5median date
Growing season299 daysfrost-free
Hardiness zone9bZone 9b
How Herald compares
- In 8 years out of 10, the last spring frost in Herald falls between January 2 and March 7, a 64-day window. The first fall frost falls between November 17 and January 3.
- The median last frost is 50 days earlier than the California median of Mar 31.
- Its 299-day growing season is among the longest of the 636 California places with a regular frost season.
- The last frost is 11 days earlier than the zone 9b median of Feb 20. Hardiness zones measure winter cold, not season length, so use these dates rather than a zone 9b chart.
- The weather station records an average of 20 nights a year at or below 32°F.
- Herald shares its weather station with Lodi, CA, 23 km away, so the two have the same frost dates.
Frost probability
| Chance of frost after | Date |
|---|---|
| 90% (early) | January 2 |
| 50% (median) | February 9 |
| 10% (safe for tender plants) | March 7 |
| Chance of frost before | Date |
|---|---|
| 10% (early) | November 17 |
| 50% (median) | December 5 |
| 90% (late) | January 3 |
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 Herald, CA
Herald, CA frost dates — last frost Feb 9, first frost Dec 5, zone 9b. whenisthelastfrost.com
Crop
JFMAMJJASOND
Start indoors: Nov 17 to Dec 1Transplant outside: Jan 12 to Jan 26
Start indoors: Dec 1 to Dec 15Transplant outside: Feb 23 to Mar 9
Start indoors: Dec 1 to Dec 15Transplant outside: Feb 23 to Mar 9
Start indoors: Dec 15 to Dec 29Transplant outside: Feb 16 to Mar 2
Start indoors: Dec 15 to Dec 29Transplant outside: Jan 19 to Feb 2Sow outdoors: Jan 12 to Feb 16Plant for fall: Oct 10 to Nov 7
Start indoors: Dec 15 to Dec 29Transplant outside: Jan 12 to Jan 26Sow outdoors: Jan 12 to Jan 26Plant for fall: Sep 26 to Oct 17
Start indoors: Dec 15 to Dec 29Transplant outside: Jan 26 to Feb 9Plant for fall: Aug 29 to Sep 19
Start indoors: Dec 15 to Dec 29Transplant outside: Jan 19 to Feb 2Plant for fall: Aug 29 to Sep 19
Start indoors: Dec 15 to Dec 29Transplant outside: Jan 26 to Feb 9Plant for fall: Aug 29 to Sep 19
Start indoors: Dec 29 to Jan 12Start indoors: Dec 29 to Jan 12Transplant outside: Mar 2 to Mar 16Sow outdoors: Mar 2 to Mar 16
Start indoors: Dec 29 to Jan 12Start indoors: Dec 29 to Jan 12Transplant outside: Feb 16 to Mar 2
Sow outdoors: Dec 29 to Jan 19Sow outdoors: Dec 29 to Jan 19Plant for fall: Sep 12 to Oct 3
Sow outdoors: Dec 29 to Jan 19Sow outdoors: Dec 29 to Jan 19Plant for fall: Oct 10 to Oct 31
Sow outdoors: Jan 5 to Feb 16Plant for fall: Oct 24 to Nov 14
Start indoors: Jan 12 to Jan 19Transplant outside: Feb 23 to Mar 2Sow outdoors: Feb 16 to Mar 2Plant for fall: Sep 19 to Oct 3
Start indoors: Jan 12 to Jan 19Sow outdoors: Feb 16 to Mar 2Plant for fall: Sep 26 to Oct 10
Start indoors: Jan 12 to Jan 19Sow outdoors: Feb 16 to Mar 2
Start indoors: Jan 12 to Jan 19Transplant outside: Feb 23 to Mar 9
Sow outdoors: Jan 19 to Feb 16Plant for fall: Sep 12 to Sep 26
Sow outdoors: Jan 19 to Feb 16Plant for fall: Sep 26 to Oct 10
Sow outdoors: Jan 19 to Feb 9
Sow outdoors: Jan 26 to Feb 23Plant for fall: Sep 26 to Oct 10
Sow outdoors: Jan 26 to Feb 16Plant for fall: Oct 10 to Oct 31
Sow outdoors: Feb 16 to Mar 9Plant for fall: Sep 19 to Oct 3
Sow outdoors: Feb 16 to Mar 2
Transplant outside: Feb 23 to Mar 16
Plant for fall: Nov 21 to Dec 26
Start indoorsTransplant outsideSow outdoorsPlant for fallMedian frost dates
When to plant vegetables in Herald, CA
| Crop | Start indoors | Transplant | Sow outdoors | Fall crop |
|---|---|---|---|---|
| Onions | Nov 17 – Dec 1 | Jan 12 – Jan 26 | — | — |
| Peppers | Dec 1 – Dec 15 | Feb 23 – Mar 9 | — | — |
| Eggplant | Dec 1 – Dec 15 | Feb 23 – Mar 9 | — | — |
| Tomatoes | Dec 15 – Dec 29 | Feb 16 – Mar 2 | — | — |
| Lettuce | Dec 15 – Dec 29 | Jan 19 – Feb 2 | Jan 12 – Feb 16 | Oct 10 – Nov 7 |
| Kale | Dec 15 – Dec 29 | Jan 12 – Jan 26 | Jan 12 – Jan 26 | Sep 26 – Oct 17 |
| Broccoli | Dec 15 – Dec 29 | Jan 26 – Feb 9 | — | Aug 29 – Sep 19 |
| Cabbage | Dec 15 – Dec 29 | Jan 19 – Feb 2 | — | Aug 29 – Sep 19 |
| Cauliflower | Dec 15 – Dec 29 | Jan 26 – Feb 9 | — | Aug 29 – Sep 19 |
| Okra | Dec 29 – Jan 12 | Mar 2 – Mar 16 | Mar 2 – Mar 16 | — |
| Basil | Dec 29 – Jan 12 | Feb 16 – Mar 2 | — | — |
| Peas | — | — | Dec 29 – Jan 19 | Sep 12 – Oct 3 |
| Spinach | — | — | Dec 29 – Jan 19 | Oct 10 – Oct 31 |
| Radishes | — | — | Jan 5 – Feb 16 | Oct 24 – Nov 14 |
| Cucumbers | Jan 12 – Jan 19 | Feb 23 – Mar 2 | Feb 16 – Mar 2 | Sep 19 – Oct 3 |
| Zucchini & Summer Squash | Jan 12 – Jan 19 | — | Feb 16 – Mar 2 | Sep 26 – Oct 10 |
| Winter Squash & Pumpkins | Jan 12 – Jan 19 | — | Feb 16 – Mar 2 | — |
| Melons & Watermelon | Jan 12 – Jan 19 | Feb 23 – Mar 9 | — | — |
| Carrots | — | — | Jan 19 – Feb 16 | Sep 12 – Sep 26 |
| Beets | — | — | Jan 19 – Feb 16 | Sep 26 – Oct 10 |
| Potatoes | — | — | Jan 19 – Feb 9 | — |
| Swiss Chard | — | — | Jan 26 – Feb 23 | Sep 26 – Oct 10 |
| Cilantro | — | — | Jan 26 – Feb 16 | Oct 10 – Oct 31 |
| Green Beans | — | — | Feb 16 – Mar 9 | Sep 19 – Oct 3 |
| Sweet Corn | — | — | Feb 16 – Mar 2 | — |
| Sweet Potatoes | — | Feb 23 – Mar 16 | — | — |
| Garlic | — | — | — | Nov 21 – Dec 26 |
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 Lodi, CA weather station, 25 km away (elevation 39 ft (12 m)).
Frost dates near Herald
- Wilton Jan 12 · Dec 16
- Galt Feb 9 · Dec 5
- Acampo Feb 9 · Dec 5
- Clements Feb 9 · Dec 5
- Lockeford Feb 9 · Dec 5
- Victor Feb 9 · Dec 5
- Ione Jan 22 · Dec 17
- Woodbridge Feb 9 · Dec 5
- Wallace Jan 22 · Dec 17
- Lodi Feb 9 · Dec 5
Frequently asked questions
When is the last frost in Herald, CA?
The median last spring frost in Herald, CA is February 9. There is still about a 10% chance of frost after March 7, so wait until then to plant frost-tender crops like tomatoes and peppers.
When is the first frost in Herald, CA?
The median first fall frost is December 5, with about a 10% chance of frost before November 17.
How long is the growing season in Herald, CA?
About 299 days between the median last spring frost and first fall frost.
What planting zone is Herald, CA?
Herald, CA is in USDA hardiness zone 9b.