Last frost date in Twentynine Palms, CA

Average last frost
January 24

The average last frost in Twentynine Palms is January 24. By February 22 the chance of another 32°F night drops to 1 in 10. The first fall frost usually arrives about December 10, which leaves 321 frost-free days. An early freeze before November 24 happens one year in ten.

Safe after (10% risk)
Feb 22
Average first frost
Dec 10
Frost-free season
321 days
Hard freeze (28°F) ends
Jan 3
Next 6 nights in Twentynine Palms

No frost in the next 6 nights

National Weather Service forecast, updated Oct 22, 12:57 UTC

  1. ThuOct 2252°
  2. FriOct 2357°
  3. SatOct 2458°
  4. SunOct 2559°
  5. MonOct 2659°
  6. TueOct 2759°
JanFebMarAprMayJunJulAugSepOctNovDecLast frost Jan 24First frost Dec 10321 frost-free daysBlue: chance of 32°F frost. Green: average frost-free season.JFMAMJJASOND321 frost-free days
Frost risk through the year at Twentynine Palms, 2.2 miles from Twentynine Palms.

Planting calendar for Twentynine Palms

Windows count forward or back from the average frost dates above. Click a crop for dates across California.

Start indoorsPlant outSow outdoorsFall plantingAverage last and first frost
Warm-season crops
JanFebMarAprMayJunJulAugSepOctNovDec
TomatoesFeb 15–Mar 1
PumpkinsFeb 15–Mar 1
SunflowersFeb 15–Mar 8
CucumbersFeb 22–Mar 1
CornFeb 15–Mar 1
Sweet potatoesFeb 15–Mar 1
WatermelonFeb 15–Mar 1
Green beansFeb 15–Mar 8
ZucchiniFeb 15–Mar 1
OkraFeb 15–Mar 1
PeppersFeb 15–Mar 1
BasilFeb 15–Mar 1
Butternut squashFeb 15–Mar 1
CantaloupeFeb 15–Mar 1
EggplantFeb 15–Mar 1
Cool-season crops
JanFebMarAprMayJunJulAugSepOctNovDec
PotatoesDec 27–Jan 10
OnionsDec 13–Jan 3
CarrotsJan 3–Feb 7
LettuceJan 10–Jan 31
BroccoliDec 27–Jan 10
BeetsDec 27–Feb 7
PeasDec 13–Dec 27
CabbageDec 27–Jan 10
RadishesDec 20–Jan 31
Brussels sproutsJan 10–Jan 24
SpinachDec 13–Jan 3
CilantroJan 10–Jan 31
KaleDec 27–Jan 10
Collard greensDec 27–Jan 10
TurnipsDec 27–Jan 10
DillJan 24–Feb 7
CeleryJan 31–Feb 7
CauliflowerJan 10–Jan 24
LeeksJan 10–Jan 24
Swiss chardJan 10–Feb 7
ParsleyJan 10–Jan 31
Fall bulbs and garlic
JanFebMarAprMayJunJulAugSepOctNovDec
Tulip bulbsDec 15–Jan 15
GarlicOct 15–Nov 30
Daffodil bulbsOct 15–Nov 30
Perennials
JanFebMarAprMayJunJulAugSepOctNovDec
StrawberriesDec 27–Jan 10
AsparagusDec 27–Jan 10

Frost probabilities

ThresholdSpring, 90% chance laterSpring, 50%Spring, 10%Fall, 10% chance earlierFall, 50%Fall, 90%
Light frost, 32°FDec 22Jan 24Feb 22Nov 24Dec 10Jan 1
Hard freeze, 28°FDec 11Jan 3Feb 8Dec 3Dec 23Jan 28

Read the spring 10% column as the date after which only one year in ten still gets frost. That is the safer date for tomatoes, peppers and basil.

Where these numbers come from

NOAA station Twentynine Palms (USC00049099) sits 2.2 miles from the center of Twentynine Palms at 1,975 feet. Its averages cover 1991 to 2020. Low spots, valleys and open fields can keep getting frost a week or two after the station stops; city centers and lakeshores usually get less of it.

Questions

When is the last frost in Twentynine Palms, CA?

The average last frost date in Twentynine Palms is January 24, based on NOAA 1991–2020 climate normals. There is a 10% chance of frost after February 22.

When is the first frost in Twentynine Palms?

The first frost in fall usually comes around December 10. One year in ten it arrives before November 24.

How long is the growing season in Twentynine Palms?

About 321 days between the average last and first frost.

When should I plant tomatoes in Twentynine Palms?

Plant tomato seedlings outside from February 15 to March 1. Start seeds indoors six to eight weeks earlier.

Nearby in California

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