Vineburg, CA frost dates
Last spring frostMar 2median date
First fall frostNov 27median date
Growing season270 daysfrost-free
Hardiness zone9bZone 9b
How Vineburg compares
- In 8 years out of 10, the last spring frost in Vineburg falls between January 27 and April 5, a 68-day window. The first fall frost falls between November 6 and December 21.
- The median last frost is 29 days earlier than the California median of Mar 31.
- Its 270-day growing season is longer than 68% of the 636 California places with a regular frost season (state median 235 days).
- The last frost is 10 days later 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 21 nights a year at or below 32°F.
- Compared with Napa, CA, 16 km away, the last frost here is 18 days later than there and the growing season is 25 days shorter.
Frost probability
| Chance of frost after | Date |
|---|---|
| 90% (early) | January 27 |
| 50% (median) | March 2 |
| 10% (safe for tender plants) | April 5 |
| Chance of frost before | Date |
|---|---|
| 10% (early) | November 6 |
| 50% (median) | November 27 |
| 90% (late) | December 21 |
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 Vineburg, CA
Vineburg, CA frost dates — last frost Mar 2, first frost Nov 27, zone 9b. whenisthelastfrost.com
Crop
JFMAMJJASOND
Start indoors: Dec 8 to Dec 22Transplant outside: Feb 2 to Feb 16
Start indoors: Dec 22 to Jan 5Start indoors: Dec 22 to Jan 5Transplant outside: Mar 16 to Mar 30
Start indoors: Dec 22 to Jan 5Start indoors: Dec 22 to Jan 5Transplant outside: Mar 16 to Mar 30
Start indoors: Jan 5 to Jan 19Transplant outside: Mar 9 to Mar 23
Start indoors: Jan 5 to Jan 19Transplant outside: Feb 9 to Feb 23Sow outdoors: Feb 2 to Mar 9Plant for fall: Oct 2 to Oct 30
Start indoors: Jan 5 to Jan 19Transplant outside: Feb 2 to Feb 16Sow outdoors: Feb 2 to Feb 16Plant for fall: Sep 18 to Oct 9
Start indoors: Jan 5 to Jan 19Transplant outside: Feb 16 to Mar 2Plant for fall: Aug 21 to Sep 11
Start indoors: Jan 5 to Jan 19Transplant outside: Feb 9 to Feb 23Plant for fall: Aug 21 to Sep 11
Start indoors: Jan 5 to Jan 19Transplant outside: Feb 16 to Mar 2Plant for fall: Aug 21 to Sep 11
Start indoors: Jan 19 to Feb 2Transplant outside: Mar 23 to Apr 6Sow outdoors: Mar 23 to Apr 6
Start indoors: Jan 19 to Feb 2Transplant outside: Mar 9 to Mar 23
Sow outdoors: Jan 19 to Feb 9Plant for fall: Sep 4 to Sep 25
Sow outdoors: Jan 19 to Feb 9Plant for fall: Oct 2 to Oct 23
Sow outdoors: Jan 26 to Mar 9Plant for fall: Oct 16 to Nov 6
Start indoors: Feb 2 to Feb 9Transplant outside: Mar 16 to Mar 23Sow outdoors: Mar 9 to Mar 23Plant for fall: Sep 11 to Sep 25
Start indoors: Feb 2 to Feb 9Sow outdoors: Mar 9 to Mar 23Plant for fall: Sep 18 to Oct 2
Start indoors: Feb 2 to Feb 9Sow outdoors: Mar 9 to Mar 23
Start indoors: Feb 2 to Feb 9Transplant outside: Mar 16 to Mar 30
Sow outdoors: Feb 9 to Mar 9Plant for fall: Sep 4 to Sep 18
Sow outdoors: Feb 9 to Mar 9Plant for fall: Sep 18 to Oct 2
Sow outdoors: Feb 9 to Mar 2
Sow outdoors: Feb 16 to Mar 16Plant for fall: Sep 18 to Oct 2
Sow outdoors: Feb 16 to Mar 9Plant for fall: Oct 2 to Oct 23
Sow outdoors: Mar 9 to Mar 30Plant for fall: Sep 11 to Sep 25
Sow outdoors: Mar 9 to Mar 23
Transplant outside: Mar 16 to Apr 6
Plant for fall: Nov 13 to Dec 18
Start indoorsTransplant outsideSow outdoorsPlant for fallMedian frost dates
When to plant vegetables in Vineburg, CA
| Crop | Start indoors | Transplant | Sow outdoors | Fall crop |
|---|---|---|---|---|
| Onions | Dec 8 – Dec 22 | Feb 2 – Feb 16 | — | — |
| Peppers | Dec 22 – Jan 5 | Mar 16 – Mar 30 | — | — |
| Eggplant | Dec 22 – Jan 5 | Mar 16 – Mar 30 | — | — |
| Tomatoes | Jan 5 – Jan 19 | Mar 9 – Mar 23 | — | — |
| Lettuce | Jan 5 – Jan 19 | Feb 9 – Feb 23 | Feb 2 – Mar 9 | Oct 2 – Oct 30 |
| Kale | Jan 5 – Jan 19 | Feb 2 – Feb 16 | Feb 2 – Feb 16 | Sep 18 – Oct 9 |
| Broccoli | Jan 5 – Jan 19 | Feb 16 – Mar 2 | — | Aug 21 – Sep 11 |
| Cabbage | Jan 5 – Jan 19 | Feb 9 – Feb 23 | — | Aug 21 – Sep 11 |
| Cauliflower | Jan 5 – Jan 19 | Feb 16 – Mar 2 | — | Aug 21 – Sep 11 |
| Okra | Jan 19 – Feb 2 | Mar 23 – Apr 6 | Mar 23 – Apr 6 | — |
| Basil | Jan 19 – Feb 2 | Mar 9 – Mar 23 | — | — |
| Peas | — | — | Jan 19 – Feb 9 | Sep 4 – Sep 25 |
| Spinach | — | — | Jan 19 – Feb 9 | Oct 2 – Oct 23 |
| Radishes | — | — | Jan 26 – Mar 9 | Oct 16 – Nov 6 |
| Cucumbers | Feb 2 – Feb 9 | Mar 16 – Mar 23 | Mar 9 – Mar 23 | Sep 11 – Sep 25 |
| Zucchini & Summer Squash | Feb 2 – Feb 9 | — | Mar 9 – Mar 23 | Sep 18 – Oct 2 |
| Winter Squash & Pumpkins | Feb 2 – Feb 9 | — | Mar 9 – Mar 23 | — |
| Melons & Watermelon | Feb 2 – Feb 9 | Mar 16 – Mar 30 | — | — |
| Carrots | — | — | Feb 9 – Mar 9 | Sep 4 – Sep 18 |
| Beets | — | — | Feb 9 – Mar 9 | Sep 18 – Oct 2 |
| Potatoes | — | — | Feb 9 – Mar 2 | — |
| Swiss Chard | — | — | Feb 16 – Mar 16 | Sep 18 – Oct 2 |
| Cilantro | — | — | Feb 16 – Mar 9 | Oct 2 – Oct 23 |
| Green Beans | — | — | Mar 9 – Mar 30 | Sep 11 – Sep 25 |
| Sweet Corn | — | — | Mar 9 – Mar 23 | — |
| Sweet Potatoes | — | Mar 16 – Apr 6 | — | — |
| Garlic | — | — | — | Nov 13 – Dec 18 |
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 Sonoma, CA weather station, 4 km away (elevation 98 ft (30 m)).
Frost dates near Vineburg
- Sonoma Mar 2 · Nov 27
- El Verano Mar 2 · Nov 27
- Boyes Hot Springs Mar 2 · Nov 27
- Eldridge Mar 2 · Nov 27
- Glen Ellen Mar 2 · Nov 27
- Yountville Mar 2 · Nov 27
- Napa Feb 12 · Dec 4
- Petaluma Feb 28 · Nov 25
- Oakville Feb 3 · Dec 4
- Penngrove Feb 28 · Nov 25
Frequently asked questions
When is the last frost in Vineburg, CA?
The median last spring frost in Vineburg, CA is March 2. There is still about a 10% chance of frost after April 5, so wait until then to plant frost-tender crops like tomatoes and peppers.
When is the first frost in Vineburg, CA?
The median first fall frost is November 27, with about a 10% chance of frost before November 6.
How long is the growing season in Vineburg, CA?
About 270 days between the median last spring frost and first fall frost.
What planting zone is Vineburg, CA?
Vineburg, CA is in USDA hardiness zone 9b.