Last frost date in Newport, RI

Average last frost
April 7

In Newport, the last spring frost comes around April 7 in an average year. Wait until April 21 if you want 90% odds of no more frost. The first fall frost usually arrives about November 13, which leaves 216 frost-free days. An early freeze before October 31 happens one year in ten.

Safe after (10% risk)
Apr 21
Average first frost
Nov 13
Frost-free season
216 days
Hard freeze (28°F) ends
Mar 28
Next 7 nights in Newport

No frost in the next 7 nights

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

  1. ThuOct 2244°
  2. FriOct 2340°
  3. SatOct 2442°
  4. SunOct 2545°
  5. MonOct 2648°
  6. TueOct 2746°
  7. WedOct 2847°
JanFebMarAprMayJunJulAugSepOctNovDecLast frost Apr 7First frost Nov 13216 frost-free daysBlue: chance of 32°F frost. Green: average frost-free season.JFMAMJJASOND216 frost-free days
Frost risk through the year at Newport Rose, 2.3 miles from Newport.

Planting calendar for Newport

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

Start indoorsPlant outSow outdoorsFall plantingAverage last and first frost
Warm-season crops
JanFebMarAprMayJunJulAugSepOctNovDec
TomatoesApr 14–Apr 28
PumpkinsApr 21–May 5
SunflowersApr 7–Apr 28
CucumbersApr 21–Apr 28
CornApr 14–Apr 28
Sweet potatoesApr 28–May 12
WatermelonApr 21–May 5
Green beansApr 14–May 5
ZucchiniApr 14–Apr 28
OkraApr 28–May 12
PeppersApr 21–May 5
BasilApr 14–Apr 28
Butternut squashApr 14–Apr 28
CantaloupeApr 21–May 5
EggplantApr 21–May 5
Cool-season crops
JanFebMarAprMayJunJulAugSepOctNovDec
PotatoesMar 10–Mar 24
OnionsFeb 24–Mar 17
CarrotsMar 17–Apr 21
LettuceMar 24–Apr 14
BroccoliMar 10–Mar 24
BeetsMar 10–Apr 21
PeasFeb 24–Mar 10
CabbageMar 10–Mar 24
RadishesMar 3–Apr 14
Brussels sproutsMar 24–Apr 7
SpinachFeb 24–Mar 17
CilantroMar 24–Apr 14
KaleMar 10–Mar 24
Collard greensMar 10–Mar 24
TurnipsMar 10–Mar 24
DillApr 7–Apr 21
CeleryApr 14–Apr 21
CauliflowerMar 24–Apr 7
LeeksMar 24–Apr 7
Swiss chardMar 24–Apr 21
ParsleyMar 24–Apr 14
Fall bulbs and garlic
JanFebMarAprMayJunJulAugSepOctNovDec
Tulip bulbsOct 30–Dec 4
GarlicOct 23–Nov 27
Daffodil bulbsOct 16–Nov 27
Perennials
JanFebMarAprMayJunJulAugSepOctNovDec
StrawberriesMar 10–Mar 24
AsparagusMar 10–Mar 24

Frost probabilities

ThresholdSpring, 90% chance laterSpring, 50%Spring, 10%Fall, 10% chance earlierFall, 50%Fall, 90%
Light frost, 32°FMar 28Apr 7Apr 21Oct 31Nov 13Nov 27
Hard freeze, 28°FMar 14Mar 28Apr 8Nov 11Nov 25Dec 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 Newport Rose (USC00375215) sits 2.3 miles from the center of Newport at 15 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 Newport, RI?

The average last frost date in Newport is April 7, based on NOAA 1991–2020 climate normals. There is a 10% chance of frost after April 21.

When is the first frost in Newport?

The first frost in fall usually comes around November 13. One year in ten it arrives before October 31.

How long is the growing season in Newport?

About 216 days between the average last and first frost.

When should I plant tomatoes in Newport?

Plant tomato seedlings outside from April 14 to April 28. Start seeds indoors six to eight weeks earlier.

Nearby in Rhode Island

All 8 cities in Rhode Island