Last frost date in Gilbert, AZ

Average last frost
February 1

In Gilbert, the last spring frost comes around February 1 in an average year. Wait until February 27 if you want 90% odds of no more frost. The first fall frost usually arrives about December 11, which leaves 315 frost-free days. An early freeze before November 23 happens one year in ten.

Safe after (10% risk)
Feb 27
Average first frost
Dec 11
Frost-free season
315 days
Hard freeze (28°F) ends
Jan 8
Next 6 nights in Gilbert

No frost in the next 6 nights

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

  1. ThuOct 2260°
  2. FriOct 2359°
  3. SatOct 2458°
  4. SunOct 2558°
  5. MonOct 2660°
  6. TueOct 2761°
JanFebMarAprMayJunJulAugSepOctNovDecLast frost Feb 1First frost Dec 11315 frost-free daysBlue: chance of 32°F frost. Green: average frost-free season.JFMAMJJASOND315 frost-free days
Frost risk through the year at Chandler Heights, 8.0 miles from Gilbert.

Planting calendar for Gilbert

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

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 22–Mar 8
WatermelonFeb 15–Mar 1
Green beansFeb 15–Mar 8
ZucchiniFeb 15–Mar 1
OkraFeb 22–Mar 8
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
PotatoesJan 4–Jan 18
OnionsDec 21–Jan 11
CarrotsJan 11–Feb 15
LettuceJan 18–Feb 8
BroccoliJan 4–Jan 18
BeetsJan 4–Feb 15
PeasDec 21–Jan 4
CabbageJan 4–Jan 18
RadishesDec 28–Feb 8
Brussels sproutsJan 18–Feb 1
SpinachDec 21–Jan 11
CilantroJan 18–Feb 8
KaleJan 4–Jan 18
Collard greensJan 4–Jan 18
TurnipsJan 4–Jan 18
DillFeb 1–Feb 15
CeleryFeb 8–Feb 15
CauliflowerJan 18–Feb 1
LeeksJan 18–Feb 1
Swiss chardJan 18–Feb 15
ParsleyJan 18–Feb 8
Fall bulbs and garlic
JanFebMarAprMayJunJulAugSepOctNovDec
Tulip bulbsDec 15–Jan 15
GarlicOct 15–Nov 30
Daffodil bulbsOct 15–Nov 30
Perennials
JanFebMarAprMayJunJulAugSepOctNovDec
StrawberriesJan 4–Jan 18
AsparagusJan 4–Jan 18

Frost probabilities

ThresholdSpring, 90% chance laterSpring, 50%Spring, 10%Fall, 10% chance earlierFall, 50%Fall, 90%
Light frost, 32°FJan 2Feb 1Feb 27Nov 23Dec 11Jan 1
Hard freeze, 28°FDec 15Jan 8Feb 11Dec 4Dec 26Jan 29

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 Chandler Heights (USC00021514) sits 8.0 miles from the center of Gilbert at 1,425 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 Gilbert, AZ?

The average last frost date in Gilbert is February 1, based on NOAA 1991–2020 climate normals. There is a 10% chance of frost after February 27.

When is the first frost in Gilbert?

The first frost in fall usually comes around December 11. One year in ten it arrives before November 23.

How long is the growing season in Gilbert?

About 315 days between the average last and first frost.

When should I plant tomatoes in Gilbert?

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

Nearby in Arizona

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