Helendale, CA frost dates
Last spring frostMar 18median date
First fall frostNov 11median date
Growing season238 daysfrost-free
Hardiness zone8bZone 8b
How Helendale compares
- In 8 years out of 10, the last spring frost in Helendale falls between February 23 and April 12, a 48-day window. The first fall frost falls between October 27 and November 26.
- The median last frost is 13 days earlier than the California median of Mar 31.
- Its 238-day growing season is longer than 51% of the 636 California places with a regular frost season (state median 235 days).
- The last frost is typical for zone 8b, where the median is Mar 16.
- The weather station records an average of 54 nights a year at or below 32°F.
- Helendale shares its weather station with Victorville, CA, 26 km away, so the two have the same frost dates.
Frost probability
| Chance of frost after | Date |
|---|---|
| 90% (early) | February 23 |
| 50% (median) | March 18 |
| 10% (safe for tender plants) | April 12 |
| Chance of frost before | Date |
|---|---|
| 10% (early) | October 27 |
| 50% (median) | November 11 |
| 90% (late) | November 26 |
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 Helendale, CA
Helendale, CA frost dates — last frost Mar 18, first frost Nov 11, zone 8b. whenisthelastfrost.com
Crop
JFMAMJJASOND
Start indoors: Dec 24 to Jan 7Start indoors: Dec 24 to Jan 7Transplant outside: Feb 18 to Mar 4
Start indoors: Jan 7 to Jan 21Transplant outside: Apr 1 to Apr 15
Start indoors: Jan 7 to Jan 21Transplant outside: Apr 1 to Apr 15
Start indoors: Jan 21 to Feb 4Transplant outside: Mar 25 to Apr 8
Start indoors: Jan 21 to Feb 4Transplant outside: Feb 25 to Mar 11Sow outdoors: Feb 18 to Mar 25Plant for fall: Sep 16 to Oct 14
Start indoors: Jan 21 to Feb 4Transplant outside: Feb 18 to Mar 4Sow outdoors: Feb 18 to Mar 4Plant for fall: Sep 2 to Sep 23
Start indoors: Jan 21 to Feb 4Transplant outside: Mar 4 to Mar 18Plant for fall: Aug 5 to Aug 26
Start indoors: Jan 21 to Feb 4Transplant outside: Feb 25 to Mar 11Plant for fall: Aug 5 to Aug 26
Start indoors: Jan 21 to Feb 4Transplant outside: Mar 4 to Mar 18Plant for fall: Aug 5 to Aug 26
Start indoors: Feb 4 to Feb 18Transplant outside: Apr 8 to Apr 22Sow outdoors: Apr 8 to Apr 22
Start indoors: Feb 4 to Feb 18Transplant outside: Mar 25 to Apr 8
Sow outdoors: Feb 4 to Feb 25Plant for fall: Aug 19 to Sep 9
Sow outdoors: Feb 4 to Feb 25Plant for fall: Sep 16 to Oct 7
Sow outdoors: Feb 11 to Mar 25Plant for fall: Sep 30 to Oct 21
Start indoors: Feb 18 to Feb 25Transplant outside: Apr 1 to Apr 8Sow outdoors: Mar 25 to Apr 8Plant for fall: Aug 26 to Sep 9
Start indoors: Feb 18 to Feb 25Sow outdoors: Mar 25 to Apr 8Plant for fall: Sep 2 to Sep 16
Start indoors: Feb 18 to Feb 25Sow outdoors: Mar 25 to Apr 8
Start indoors: Feb 18 to Feb 25Transplant outside: Apr 1 to Apr 15
Sow outdoors: Feb 25 to Mar 25Plant for fall: Aug 19 to Sep 2
Sow outdoors: Feb 25 to Mar 25Plant for fall: Sep 2 to Sep 16
Sow outdoors: Feb 25 to Mar 18
Sow outdoors: Mar 4 to Apr 1Plant for fall: Sep 2 to Sep 16
Sow outdoors: Mar 4 to Mar 25Plant for fall: Sep 16 to Oct 7
Sow outdoors: Mar 25 to Apr 15Plant for fall: Aug 26 to Sep 9
Sow outdoors: Mar 25 to Apr 8
Transplant outside: Apr 1 to Apr 22
Plant for fall: Oct 28 to Dec 2
Start indoorsTransplant outsideSow outdoorsPlant for fallMedian frost dates
When to plant vegetables in Helendale, CA
| Crop | Start indoors | Transplant | Sow outdoors | Fall crop |
|---|---|---|---|---|
| Onions | Dec 24 – Jan 7 | Feb 18 – Mar 4 | — | — |
| Peppers | Jan 7 – Jan 21 | Apr 1 – Apr 15 | — | — |
| Eggplant | Jan 7 – Jan 21 | Apr 1 – Apr 15 | — | — |
| Tomatoes | Jan 21 – Feb 4 | Mar 25 – Apr 8 | — | — |
| Lettuce | Jan 21 – Feb 4 | Feb 25 – Mar 11 | Feb 18 – Mar 25 | Sep 16 – Oct 14 |
| Kale | Jan 21 – Feb 4 | Feb 18 – Mar 4 | Feb 18 – Mar 4 | Sep 2 – Sep 23 |
| Broccoli | Jan 21 – Feb 4 | Mar 4 – Mar 18 | — | Aug 5 – Aug 26 |
| Cabbage | Jan 21 – Feb 4 | Feb 25 – Mar 11 | — | Aug 5 – Aug 26 |
| Cauliflower | Jan 21 – Feb 4 | Mar 4 – Mar 18 | — | Aug 5 – Aug 26 |
| Okra | Feb 4 – Feb 18 | Apr 8 – Apr 22 | Apr 8 – Apr 22 | — |
| Basil | Feb 4 – Feb 18 | Mar 25 – Apr 8 | — | — |
| Peas | — | — | Feb 4 – Feb 25 | Aug 19 – Sep 9 |
| Spinach | — | — | Feb 4 – Feb 25 | Sep 16 – Oct 7 |
| Radishes | — | — | Feb 11 – Mar 25 | Sep 30 – Oct 21 |
| Cucumbers | Feb 18 – Feb 25 | Apr 1 – Apr 8 | Mar 25 – Apr 8 | Aug 26 – Sep 9 |
| Zucchini & Summer Squash | Feb 18 – Feb 25 | — | Mar 25 – Apr 8 | Sep 2 – Sep 16 |
| Winter Squash & Pumpkins | Feb 18 – Feb 25 | — | Mar 25 – Apr 8 | — |
| Melons & Watermelon | Feb 18 – Feb 25 | Apr 1 – Apr 15 | — | — |
| Carrots | — | — | Feb 25 – Mar 25 | Aug 19 – Sep 2 |
| Beets | — | — | Feb 25 – Mar 25 | Sep 2 – Sep 16 |
| Potatoes | — | — | Feb 25 – Mar 18 | — |
| Swiss Chard | — | — | Mar 4 – Apr 1 | Sep 2 – Sep 16 |
| Cilantro | — | — | Mar 4 – Mar 25 | Sep 16 – Oct 7 |
| Green Beans | — | — | Mar 25 – Apr 15 | Aug 26 – Sep 9 |
| Sweet Corn | — | — | Mar 25 – Apr 8 | — |
| Sweet Potatoes | — | Apr 1 – Apr 22 | — | — |
| Garlic | — | — | — | Oct 28 – Dec 2 |
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 Victorville, CA weather station, 25 km away (elevation 2,881 ft (878 m)).
Frost dates near Helendale
- Oro Grande Mar 18 · Nov 11
- Adelanto Mar 18 · Nov 11
- Hinkley Feb 22 · Nov 23
- Victorville Mar 18 · Nov 11
- Apple Valley Mar 18 · Nov 11
- Barstow Feb 22 · Nov 23
- Hesperia Feb 28 · Dec 1
- Phelan May 16 · Oct 13
- Boron Mar 19 · Nov 25
- Daggett Feb 19 · Nov 26
Frequently asked questions
When is the last frost in Helendale, CA?
The median last spring frost in Helendale, CA is March 18. There is still about a 10% chance of frost after April 12, so wait until then to plant frost-tender crops like tomatoes and peppers.
When is the first frost in Helendale, CA?
The median first fall frost is November 11, with about a 10% chance of frost before October 27.
How long is the growing season in Helendale, CA?
About 238 days between the median last spring frost and first fall frost.
What planting zone is Helendale, CA?
Helendale, CA is in USDA hardiness zone 8b.