Last frost date in Loma Linda, CA

Average last frost
January 27

In Loma Linda, the last spring frost comes around January 27 in an average year. Wait until February 28 if you want 90% odds of no more frost. The first fall frost usually arrives about December 19, which leaves 329 frost-free days. An early freeze before December 1 happens one year in ten.

Safe after (10% risk)
Feb 28
Average first frost
Dec 19
Frost-free season
329 days
Hard freeze (28°F) ends
Jan 7
Next 6 nights in Loma Linda

No frost in the next 6 nights

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

  1. ThuOct 2253°
  2. FriOct 2353°
  3. SatOct 2455°
  4. SunOct 2556°
  5. MonOct 2656°
  6. TueOct 2756°
JanFebMarAprMayJunJulAugSepOctNovDecLast frost Jan 27First frost Dec 19329 frost-free daysBlue: chance of 32°F frost. Green: average frost-free season.JFMAMJJASOND329 frost-free days
Frost risk through the year at Redlands, 3.0 miles from Loma Linda.

Planting calendar for Loma Linda

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 17–Mar 3
WatermelonFeb 15–Mar 1
Green beansFeb 15–Mar 8
ZucchiniFeb 15–Mar 1
OkraFeb 17–Mar 3
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 30–Jan 13
OnionsDec 16–Jan 6
CarrotsJan 6–Feb 10
LettuceJan 13–Feb 3
BroccoliDec 30–Jan 13
BeetsDec 30–Feb 10
PeasDec 16–Dec 30
CabbageDec 30–Jan 13
RadishesDec 23–Feb 3
Brussels sproutsJan 13–Jan 27
SpinachDec 16–Jan 6
CilantroJan 13–Feb 3
KaleDec 30–Jan 13
Collard greensDec 30–Jan 13
TurnipsDec 30–Jan 13
DillJan 27–Feb 10
CeleryFeb 3–Feb 10
CauliflowerJan 13–Jan 27
LeeksJan 13–Jan 27
Swiss chardJan 13–Feb 10
ParsleyJan 13–Feb 3
Fall bulbs and garlic
JanFebMarAprMayJunJulAugSepOctNovDec
Tulip bulbsDec 15–Jan 15
GarlicOct 15–Nov 30
Daffodil bulbsOct 15–Nov 30
Perennials
JanFebMarAprMayJunJulAugSepOctNovDec
StrawberriesDec 30–Jan 13
AsparagusDec 30–Jan 13

Frost probabilities

ThresholdSpring, 90% chance laterSpring, 50%Spring, 10%Fall, 10% chance earlierFall, 50%Fall, 90%
Light frost, 32°FDec 21Jan 27Feb 28Dec 1Dec 19Jan 26
Hard freeze, 28°FDec 17Jan 7Feb 15Dec 13Jan 1Feb 13

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 Redlands (USC00047306) sits 3.0 miles from the center of Loma Linda at 1,410 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 Loma Linda, CA?

The average last frost date in Loma Linda is January 27, based on NOAA 1991–2020 climate normals. There is a 10% chance of frost after February 28.

When is the first frost in Loma Linda?

The first frost in fall usually comes around December 19. One year in ten it arrives before December 1.

How long is the growing season in Loma Linda?

About 329 days between the average last and first frost.

When should I plant tomatoes in Loma Linda?

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

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