Cloverdale, CA frost dates
Last spring frostFeb 25median date
First fall frostDec 3median date
Growing season281 daysfrost-free
Hardiness zone9bZone 9b
How Cloverdale compares
- In 8 years out of 10, the last spring frost in Cloverdale falls between January 18 and April 2, a 74-day window. The first fall frost falls between November 14 and December 25.
- The median last frost is 34 days earlier than the California median of Mar 31.
- Its 281-day growing season is longer than 81% of the 636 California places with a regular frost season (state median 235 days).
- The last frost is 5 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 13 nights a year at or below 32°F.
- Compared with Santa Rosa, CA, 47 km away, the last frost here is the same as there and the growing season is 2 days longer.
Frost probability
| Chance of frost after | Date |
|---|---|
| 90% (early) | January 18 |
| 50% (median) | February 25 |
| 10% (safe for tender plants) | April 2 |
| Chance of frost before | Date |
|---|---|
| 10% (early) | November 14 |
| 50% (median) | December 3 |
| 90% (late) | December 25 |
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 Cloverdale, CA
Cloverdale, CA frost dates — last frost Feb 25, first frost Dec 3, zone 9b. whenisthelastfrost.com
Crop
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Start indoors: Dec 3 to Dec 17Transplant outside: Jan 28 to Feb 11
Start indoors: Dec 17 to Dec 31Transplant outside: Mar 11 to Mar 25
Start indoors: Dec 17 to Dec 31Transplant outside: Mar 11 to Mar 25
Start indoors: Dec 31 to Jan 14Start indoors: Dec 31 to Jan 14Transplant outside: Mar 4 to Mar 18
Start indoors: Dec 31 to Jan 14Start indoors: Dec 31 to Jan 14Transplant outside: Feb 4 to Feb 18Sow outdoors: Jan 28 to Mar 4Plant for fall: Oct 8 to Nov 5
Start indoors: Dec 31 to Jan 14Start indoors: Dec 31 to Jan 14Transplant outside: Jan 28 to Feb 11Sow outdoors: Jan 28 to Feb 11Plant for fall: Sep 24 to Oct 15
Start indoors: Dec 31 to Jan 14Start indoors: Dec 31 to Jan 14Transplant outside: Feb 11 to Feb 25Plant for fall: Aug 27 to Sep 17
Start indoors: Dec 31 to Jan 14Start indoors: Dec 31 to Jan 14Transplant outside: Feb 4 to Feb 18Plant for fall: Aug 27 to Sep 17
Start indoors: Dec 31 to Jan 14Start indoors: Dec 31 to Jan 14Transplant outside: Feb 11 to Feb 25Plant for fall: Aug 27 to Sep 17
Start indoors: Jan 14 to Jan 28Transplant outside: Mar 18 to Apr 1Sow outdoors: Mar 18 to Apr 1
Start indoors: Jan 14 to Jan 28Transplant outside: Mar 4 to Mar 18
Sow outdoors: Jan 14 to Feb 4Plant for fall: Sep 10 to Oct 1
Sow outdoors: Jan 14 to Feb 4Plant for fall: Oct 8 to Oct 29
Sow outdoors: Jan 21 to Mar 4Plant for fall: Oct 22 to Nov 12
Start indoors: Jan 28 to Feb 4Transplant outside: Mar 11 to Mar 18Sow outdoors: Mar 4 to Mar 18Plant for fall: Sep 17 to Oct 1
Start indoors: Jan 28 to Feb 4Sow outdoors: Mar 4 to Mar 18Plant for fall: Sep 24 to Oct 8
Start indoors: Jan 28 to Feb 4Sow outdoors: Mar 4 to Mar 18
Start indoors: Jan 28 to Feb 4Transplant outside: Mar 11 to Mar 25
Sow outdoors: Feb 4 to Mar 4Plant for fall: Sep 10 to Sep 24
Sow outdoors: Feb 4 to Mar 4Plant for fall: Sep 24 to Oct 8
Sow outdoors: Feb 4 to Feb 25
Sow outdoors: Feb 11 to Mar 11Plant for fall: Sep 24 to Oct 8
Sow outdoors: Feb 11 to Mar 4Plant for fall: Oct 8 to Oct 29
Sow outdoors: Mar 4 to Mar 25Plant for fall: Sep 17 to Oct 1
Sow outdoors: Mar 4 to Mar 18
Transplant outside: Mar 11 to Apr 1
Plant for fall: Nov 19 to Dec 24
Start indoorsTransplant outsideSow outdoorsPlant for fallMedian frost dates
When to plant vegetables in Cloverdale, CA
| Crop | Start indoors | Transplant | Sow outdoors | Fall crop |
|---|---|---|---|---|
| Onions | Dec 3 – Dec 17 | Jan 28 – Feb 11 | — | — |
| Peppers | Dec 17 – Dec 31 | Mar 11 – Mar 25 | — | — |
| Eggplant | Dec 17 – Dec 31 | Mar 11 – Mar 25 | — | — |
| Tomatoes | Dec 31 – Jan 14 | Mar 4 – Mar 18 | — | — |
| Lettuce | Dec 31 – Jan 14 | Feb 4 – Feb 18 | Jan 28 – Mar 4 | Oct 8 – Nov 5 |
| Kale | Dec 31 – Jan 14 | Jan 28 – Feb 11 | Jan 28 – Feb 11 | Sep 24 – Oct 15 |
| Broccoli | Dec 31 – Jan 14 | Feb 11 – Feb 25 | — | Aug 27 – Sep 17 |
| Cabbage | Dec 31 – Jan 14 | Feb 4 – Feb 18 | — | Aug 27 – Sep 17 |
| Cauliflower | Dec 31 – Jan 14 | Feb 11 – Feb 25 | — | Aug 27 – Sep 17 |
| Okra | Jan 14 – Jan 28 | Mar 18 – Apr 1 | Mar 18 – Apr 1 | — |
| Basil | Jan 14 – Jan 28 | Mar 4 – Mar 18 | — | — |
| Peas | — | — | Jan 14 – Feb 4 | Sep 10 – Oct 1 |
| Spinach | — | — | Jan 14 – Feb 4 | Oct 8 – Oct 29 |
| Radishes | — | — | Jan 21 – Mar 4 | Oct 22 – Nov 12 |
| Cucumbers | Jan 28 – Feb 4 | Mar 11 – Mar 18 | Mar 4 – Mar 18 | Sep 17 – Oct 1 |
| Zucchini & Summer Squash | Jan 28 – Feb 4 | — | Mar 4 – Mar 18 | Sep 24 – Oct 8 |
| Winter Squash & Pumpkins | Jan 28 – Feb 4 | — | Mar 4 – Mar 18 | — |
| Melons & Watermelon | Jan 28 – Feb 4 | Mar 11 – Mar 25 | — | — |
| Carrots | — | — | Feb 4 – Mar 4 | Sep 10 – Sep 24 |
| Beets | — | — | Feb 4 – Mar 4 | Sep 24 – Oct 8 |
| Potatoes | — | — | Feb 4 – Feb 25 | — |
| Swiss Chard | — | — | Feb 11 – Mar 11 | Sep 24 – Oct 8 |
| Cilantro | — | — | Feb 11 – Mar 4 | Oct 8 – Oct 29 |
| Green Beans | — | — | Mar 4 – Mar 25 | Sep 17 – Oct 1 |
| Sweet Corn | — | — | Mar 4 – Mar 18 | — |
| Sweet Potatoes | — | Mar 11 – Apr 1 | — | — |
| Garlic | — | — | — | Nov 19 – Dec 24 |
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 Cloverdale, CA weather station, 2 km away (elevation 400 ft (122 m)).
Frost dates near Cloverdale
- Geyserville Feb 15 · Dec 2
- Hopland Feb 25 · Dec 3
- Healdsburg Feb 15 · Dec 2
- Cobb Apr 10 · Nov 6
- Kelseyville Apr 10 · Nov 6
- Finley Feb 25 · Dec 3
- Cazadero Feb 26 · Dec 27
- Lakeport Mar 5 · Nov 21
- Yorkville Mar 5 · Nov 21
- Rio Nido Mar 20 · Nov 13
Frequently asked questions
When is the last frost in Cloverdale, CA?
The median last spring frost in Cloverdale, CA is February 25. There is still about a 10% chance of frost after April 2, so wait until then to plant frost-tender crops like tomatoes and peppers.
When is the first frost in Cloverdale, CA?
The median first fall frost is December 3, with about a 10% chance of frost before November 14.
How long is the growing season in Cloverdale, CA?
About 281 days between the median last spring frost and first fall frost.
What planting zone is Cloverdale, CA?
Cloverdale, CA is in USDA hardiness zone 9b.