Blythe, CA frost dates
Last spring frostJan 25median date
First fall frostDec 12median date
Growing season321 daysfrost-free
Hardiness zone9bZone 9b
Frost is light and occasional here — typically a few cold nights around midwinter (about 9 a year). Cover tender plants when frost is forecast.
How Blythe compares
- In a typical year, frost nights in Blythe fall between December 12 and January 25. In 1 year in 10 the first frost comes as early as November 28, or the last frost as late as February 24.
- Nearby Yuma, AZ, 103 km away, rarely gets frost, a reminder of how much elevation and distance from the coast matter.
Frost probability
| Chance of frost after | Date |
|---|---|
| 90% (early) | December 29 |
| 50% (median) | January 25 |
| 10% (safe for tender plants) | February 24 |
| Chance of frost before | Date |
|---|---|
| 10% (early) | November 28 |
| 50% (median) | December 12 |
| 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 Blythe, CA
Blythe, CA frost dates — last frost Jan 25, first frost Dec 12, zone 9b. 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 2 to Nov 16Transplant outside: Dec 28 to Jan 11Transplant outside: Dec 28 to Jan 11
Start indoors: Nov 16 to Nov 30Transplant outside: Feb 8 to Feb 22
Start indoors: Nov 16 to Nov 30Transplant outside: Feb 8 to Feb 22
Start indoors: Nov 30 to Dec 14Transplant outside: Feb 1 to Feb 15
Start indoors: Nov 30 to Dec 14Transplant outside: Jan 4 to Jan 18Sow outdoors: Dec 28 to Feb 1Sow outdoors: Dec 28 to Feb 1Plant for fall: Oct 17 to Nov 14
Start indoors: Nov 30 to Dec 14Transplant outside: Dec 28 to Jan 11Transplant outside: Dec 28 to Jan 11Sow outdoors: Dec 28 to Jan 11Sow outdoors: Dec 28 to Jan 11Plant for fall: Oct 3 to Oct 24
Start indoors: Nov 30 to Dec 14Transplant outside: Jan 11 to Jan 25Plant for fall: Sep 5 to Sep 26
Start indoors: Nov 30 to Dec 14Transplant outside: Jan 4 to Jan 18Plant for fall: Sep 5 to Sep 26
Start indoors: Nov 30 to Dec 14Transplant outside: Jan 11 to Jan 25Plant for fall: Sep 5 to Sep 26
Start indoors: Dec 14 to Dec 28Transplant outside: Feb 15 to Mar 1Sow outdoors: Feb 15 to Mar 1
Start indoors: Dec 14 to Dec 28Transplant outside: Feb 1 to Feb 15
Sow outdoors: Dec 14 to Jan 4Sow outdoors: Dec 14 to Jan 4Plant for fall: Sep 19 to Oct 10
Sow outdoors: Dec 14 to Jan 4Sow outdoors: Dec 14 to Jan 4Plant for fall: Oct 17 to Nov 7
Sow outdoors: Dec 21 to Feb 1Sow outdoors: Dec 21 to Feb 1Plant for fall: Oct 31 to Nov 21
Start indoors: Dec 28 to Jan 4Start indoors: Dec 28 to Jan 4Transplant outside: Feb 8 to Feb 15Sow outdoors: Feb 1 to Feb 15Plant for fall: Sep 26 to Oct 10
Start indoors: Dec 28 to Jan 4Start indoors: Dec 28 to Jan 4Sow outdoors: Feb 1 to Feb 15Plant for fall: Oct 3 to Oct 17
Start indoors: Dec 28 to Jan 4Start indoors: Dec 28 to Jan 4Sow outdoors: Feb 1 to Feb 15
Start indoors: Dec 28 to Jan 4Start indoors: Dec 28 to Jan 4Transplant outside: Feb 8 to Feb 22
Sow outdoors: Jan 4 to Feb 1Plant for fall: Sep 19 to Oct 3
Sow outdoors: Jan 4 to Feb 1Plant for fall: Oct 3 to Oct 17
Sow outdoors: Jan 4 to Jan 25
Sow outdoors: Jan 11 to Feb 8Plant for fall: Oct 3 to Oct 17
Sow outdoors: Jan 11 to Feb 1Plant for fall: Oct 17 to Nov 7
Sow outdoors: Feb 1 to Feb 22Plant for fall: Sep 26 to Oct 10
Sow outdoors: Feb 1 to Feb 15
Transplant outside: Feb 8 to Mar 1
Plant for fall: Nov 28 to Jan 2Plant for fall: Nov 28 to Jan 2
Start indoorsTransplant outsideSow outdoorsPlant for fallMedian frost dates
When to plant vegetables in Blythe, CA
| Crop | Start indoors | Transplant | Sow outdoors | Fall crop |
|---|---|---|---|---|
| Onions | Nov 2 – Nov 16 | Dec 28 – Jan 11 | — | — |
| Peppers | Nov 16 – Nov 30 | Feb 8 – Feb 22 | — | — |
| Eggplant | Nov 16 – Nov 30 | Feb 8 – Feb 22 | — | — |
| Tomatoes | Nov 30 – Dec 14 | Feb 1 – Feb 15 | — | — |
| Lettuce | Nov 30 – Dec 14 | Jan 4 – Jan 18 | Dec 28 – Feb 1 | Oct 17 – Nov 14 |
| Kale | Nov 30 – Dec 14 | Dec 28 – Jan 11 | Dec 28 – Jan 11 | Oct 3 – Oct 24 |
| Broccoli | Nov 30 – Dec 14 | Jan 11 – Jan 25 | — | Sep 5 – Sep 26 |
| Cabbage | Nov 30 – Dec 14 | Jan 4 – Jan 18 | — | Sep 5 – Sep 26 |
| Cauliflower | Nov 30 – Dec 14 | Jan 11 – Jan 25 | — | Sep 5 – Sep 26 |
| Okra | Dec 14 – Dec 28 | Feb 15 – Mar 1 | Feb 15 – Mar 1 | — |
| Basil | Dec 14 – Dec 28 | Feb 1 – Feb 15 | — | — |
| Peas | — | — | Dec 14 – Jan 4 | Sep 19 – Oct 10 |
| Spinach | — | — | Dec 14 – Jan 4 | Oct 17 – Nov 7 |
| Radishes | — | — | Dec 21 – Feb 1 | Oct 31 – Nov 21 |
| Cucumbers | Dec 28 – Jan 4 | Feb 8 – Feb 15 | Feb 1 – Feb 15 | Sep 26 – Oct 10 |
| Zucchini & Summer Squash | Dec 28 – Jan 4 | — | Feb 1 – Feb 15 | Oct 3 – Oct 17 |
| Winter Squash & Pumpkins | Dec 28 – Jan 4 | — | Feb 1 – Feb 15 | — |
| Melons & Watermelon | Dec 28 – Jan 4 | Feb 8 – Feb 22 | — | — |
| Carrots | — | — | Jan 4 – Feb 1 | Sep 19 – Oct 3 |
| Beets | — | — | Jan 4 – Feb 1 | Oct 3 – Oct 17 |
| Potatoes | — | — | Jan 4 – Jan 25 | — |
| Swiss Chard | — | — | Jan 11 – Feb 8 | Oct 3 – Oct 17 |
| Cilantro | — | — | Jan 11 – Feb 1 | Oct 17 – Nov 7 |
| Green Beans | — | — | Feb 1 – Feb 22 | Sep 26 – Oct 10 |
| Sweet Corn | — | — | Feb 1 – Feb 15 | — |
| Sweet Potatoes | — | Feb 8 – Mar 1 | — | — |
| Garlic | — | — | — | Nov 28 – Jan 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 Blythe, CA weather station, 3 km away (elevation 269 ft (82 m)).
ZIP codes in Blythe: 92225 92226
Frost dates near Blythe
- Palo Verde Jan 5 · Dec 21
- Vidal Jan 12 · Dec 19
- Earp Jan 12 · Dec 19
- Winterhaven Jan 8 · Dec 28
- Desert Center Jan 10 · Jan 8
- Parker Dam Jan 7 · Dec 31
- Bard Jan 8 · Dec 28
- Calipatria Jan 16 · Dec 19
- Niland Feb 5 · Dec 17
- Brawley Jan 16 · Dec 19
Frequently asked questions
When is the last frost in Blythe, CA?
The median last spring frost in Blythe, CA is January 25. There is still about a 10% chance of frost after February 24, so wait until then to plant frost-tender crops like tomatoes and peppers.
When is the first frost in Blythe, CA?
The median first fall frost is December 12, with about a 10% chance of frost before November 28.
How long is the growing season in Blythe, CA?
About 321 days between the median last spring frost and first fall frost.
What planting zone is Blythe, CA?
Blythe, CA is in USDA hardiness zone 9b.