Frost dates for 92277 — Twentynine Palms, CA
Frost is light and occasional here — typically a few cold nights around midwinter (about 17 a year). Cover tender plants when frost is forecast.
How Twentynine Palms compares
- In a typical year, frost nights in Twentynine Palms fall between December 10 and January 24. In 1 year in 10 the first frost comes as early as November 24, or the last frost as late as February 22.
- Compared with Indio, CA, 46 km away, the last frost here is 24 days later than there.
Frost probability
| Chance of frost after | Date |
|---|---|
| 90% (early) | December 22 |
| 50% (median) | January 24 |
| 10% (safe for tender plants) | February 22 |
| Chance of frost before | Date |
|---|---|
| 10% (early) | November 24 |
| 50% (median) | December 10 |
| 90% (late) | January 1 |
Frost here means 32°F (0°C). A median date means half of years have their last frost earlier and half later.
Gardening where frost is rare
Twentynine Palms, CA only freezes on a few winter nights, so the usual "plant after the last frost" rule doesn't apply. Heat and rainfall decide the seasons instead:
- Cool-season crops (lettuce, broccoli, peas, carrots) grow best from fall through late winter.
- Warm-season crops (tomatoes, peppers, beans, squash) do best planted in late winter to spring, and again in late summer for a fall crop — midsummer heat can stop tomatoes setting fruit.
- Heat lovers (okra, sweet potatoes, melons) can be planted through spring and early summer.
About these dates
Based on 1991–2020 NOAA climate normals for the Twentynine Palms, CA weather station, 3 km away (elevation 1,975 ft (602 m)).
ZIP codes in Twentynine Palms: 92277 92278
Frost dates near Twentynine Palms
- Joshua Tree Feb 28 · Dec 1
- Yucca Valley Mar 14 · Nov 28
- Pioneertown Feb 16 · Dec 10
- Desert Hot Springs Jan 9 · Jan 9
- Indio Dec 31 · Dec 27
- Landers Mar 1 · Nov 29
- Thousand Palms Jan 9 · Jan 9
- Morongo Valley Feb 25 · Dec 15
Frequently asked questions
When is the last frost in Twentynine Palms, CA?
The median last spring frost in Twentynine Palms, CA is January 24. There is still about a 10% chance of frost after February 22, so wait until then to plant frost-tender crops like tomatoes and peppers.
When is the first frost in Twentynine Palms, CA?
The median first fall frost is December 10, with about a 10% chance of frost before November 24.
How long is the growing season in Twentynine Palms, CA?
About 320 days between the median last spring frost and first fall frost.
What planting zone is Twentynine Palms, CA?
Twentynine Palms, CA is in USDA hardiness zone 9b.