Last frost date in Attleboro, MA

Average last frost
April 27

Expect the last frost in Attleboro around April 27. Frost after May 10 happens in only one year out of ten. The first fall frost usually arrives about October 15, which leaves 168 frost-free days. An early freeze before October 1 happens one year in ten.

Safe after (10% risk)
May 10
Average first frost
Oct 15
Frost-free season
168 days
Hard freeze (28°F) ends
Apr 16
Next 7 nights in Attleboro

Frost likely Fri night, low 31°F

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

  1. ThuOct 2236°possible frost
  2. FriOct 2331°frost
  3. SatOct 2431°frost
  4. SunOct 2535°possible frost
  5. MonOct 2643°
  6. TueOct 2739°
  7. WedOct 2840°
JanFebMarAprMayJunJulAugSepOctNovDecLast frost Apr 27First frost Oct 15168 frost-free daysBlue: chance of 32°F frost. Green: average frost-free season.JFMAMJJASOND168 frost-free days
Frost risk through the year at Norton W, 7.8 miles from Attleboro.

Planting calendar for Attleboro

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

Start indoorsPlant outSow outdoorsFall plantingAverage last and first frost
Warm-season crops
JanFebMarAprMayJunJulAugSepOctNovDec
TomatoesMay 4–May 18
PumpkinsMay 11–May 25
SunflowersApr 27–May 18
CucumbersMay 11–May 18
CornMay 4–May 18
Sweet potatoesMay 18–Jun 1
WatermelonMay 11–May 25
Green beansMay 4–May 25
ZucchiniMay 4–May 18
OkraMay 18–Jun 1
PeppersMay 11–May 25
BasilMay 4–May 18
Butternut squashMay 4–May 18
CantaloupeMay 11–May 25
EggplantMay 11–May 25
Cool-season crops
JanFebMarAprMayJunJulAugSepOctNovDec
PotatoesMar 30–Apr 13
OnionsMar 16–Apr 6
CarrotsApr 6–May 11
LettuceApr 13–May 4
BroccoliMar 30–Apr 13
BeetsMar 30–May 11
PeasMar 16–Mar 30
CabbageMar 30–Apr 13
RadishesMar 23–May 4
Brussels sproutsApr 13–Apr 27
SpinachMar 16–Apr 6
CilantroApr 13–May 4
KaleMar 30–Apr 13
Collard greensMar 30–Apr 13
TurnipsMar 30–Apr 13
DillApr 27–May 11
CeleryMay 4–May 11
CauliflowerApr 13–Apr 27
LeeksApr 13–Apr 27
Swiss chardApr 13–May 11
ParsleyApr 13–May 4
Fall bulbs and garlic
JanFebMarAprMayJunJulAugSepOctNovDec
Tulip bulbsOct 1–Nov 5
GarlicSep 24–Oct 29
Daffodil bulbsSep 17–Oct 29
Perennials
JanFebMarAprMayJunJulAugSepOctNovDec
StrawberriesMar 30–Apr 13
AsparagusMar 30–Apr 13

Frost probabilities

ThresholdSpring, 90% chance laterSpring, 50%Spring, 10%Fall, 10% chance earlierFall, 50%Fall, 90%
Light frost, 32°FApr 14Apr 27May 10Oct 1Oct 15Oct 30
Hard freeze, 28°FApr 1Apr 16May 2Oct 12Oct 28Nov 11

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 Norton W (USC00195984) sits 7.8 miles from the center of Attleboro at 95 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 Attleboro, MA?

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

When is the first frost in Attleboro?

The first frost in fall usually comes around October 15. One year in ten it arrives before October 1.

How long is the growing season in Attleboro?

About 168 days between the average last and first frost.

When should I plant tomatoes in Attleboro?

Plant tomato seedlings outside from May 4 to May 18. Start seeds indoors six to eight weeks earlier.

Nearby in Massachusetts

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