Last frost date in Bremerton, WA

Average last frost
March 29

In Bremerton, the last spring frost comes around March 29 in an average year. Wait until April 24 if you want 90% odds of no more frost. The first fall frost usually arrives about November 14, which leaves 227 frost-free days. An early freeze before October 26 happens one year in ten.

Safe after (10% risk)
Apr 24
Average first frost
Nov 14
Frost-free season
227 days
Hard freeze (28°F) ends
Feb 27
Next 6 nights in Bremerton

No frost in the next 6 nights

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

  1. ThuOct 2241°
  2. FriOct 2337°
  3. SatOct 2439°
  4. SunOct 2540°
  5. MonOct 2640°
  6. TueOct 2740°
JanFebMarAprMayJunJulAugSepOctNovDecLast frost Mar 29First frost Nov 14227 frost-free daysBlue: chance of 32°F frost. Green: average frost-free season.JFMAMJJASOND227 frost-free days
Frost risk through the year at Bremerton, 2.6 miles from Bremerton.

Planting calendar for Bremerton

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

Start indoorsPlant outSow outdoorsFall plantingAverage last and first frost
Warm-season crops
JanFebMarAprMayJunJulAugSepOctNovDec
TomatoesApr 5–Apr 19
PumpkinsApr 12–Apr 26
SunflowersMar 29–Apr 19
CucumbersApr 12–Apr 19
CornApr 5–Apr 19
Sweet potatoesApr 19–May 3
WatermelonApr 12–Apr 26
Green beansApr 5–Apr 26
ZucchiniApr 5–Apr 19
OkraApr 19–May 3
PeppersApr 12–Apr 26
BasilApr 5–Apr 19
Butternut squashApr 5–Apr 19
CantaloupeApr 12–Apr 26
EggplantApr 12–Apr 26
Cool-season crops
JanFebMarAprMayJunJulAugSepOctNovDec
PotatoesMar 1–Mar 15
OnionsFeb 15–Mar 8
CarrotsMar 8–Apr 12
LettuceMar 15–Apr 5
BroccoliMar 1–Mar 15
BeetsMar 1–Apr 12
PeasFeb 15–Mar 1
CabbageMar 1–Mar 15
RadishesFeb 22–Apr 5
Brussels sproutsMar 15–Mar 29
SpinachFeb 15–Mar 8
CilantroMar 15–Apr 5
KaleMar 1–Mar 15
Collard greensMar 1–Mar 15
TurnipsMar 1–Mar 15
DillMar 29–Apr 12
CeleryApr 5–Apr 12
CauliflowerMar 15–Mar 29
LeeksMar 15–Mar 29
Swiss chardMar 15–Apr 12
ParsleyMar 15–Apr 5
Fall bulbs and garlic
JanFebMarAprMayJunJulAugSepOctNovDec
Tulip bulbsOct 31–Dec 5
GarlicOct 24–Nov 28
Daffodil bulbsOct 17–Nov 28
Perennials
JanFebMarAprMayJunJulAugSepOctNovDec
StrawberriesMar 1–Mar 15
AsparagusMar 1–Mar 15

Frost probabilities

ThresholdSpring, 90% chance laterSpring, 50%Spring, 10%Fall, 10% chance earlierFall, 50%Fall, 90%
Light frost, 32°FMar 5Mar 29Apr 24Oct 26Nov 14Dec 1
Hard freeze, 28°FJan 24Feb 27Mar 27Nov 10Nov 30Dec 24

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 Bremerton (USC00450872) sits 2.6 miles from the center of Bremerton at 110 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 Bremerton, WA?

The average last frost date in Bremerton is March 29, based on NOAA 1991–2020 climate normals. There is a 10% chance of frost after April 24.

When is the first frost in Bremerton?

The first frost in fall usually comes around November 14. One year in ten it arrives before October 26.

How long is the growing season in Bremerton?

About 227 days between the average last and first frost.

When should I plant tomatoes in Bremerton?

Plant tomato seedlings outside from April 5 to April 19. Start seeds indoors six to eight weeks earlier.

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