Last frost date in Holbrook, NY
Expect the last frost in Holbrook around April 10. Frost after April 25 happens in only one year out of ten. The first fall frost usually arrives about November 2, which leaves 207 frost-free days. An early freeze before October 18 happens one year in ten.
- Safe after (10% risk)
- Apr 25
- Average first frost
- Nov 2
- Frost-free season
- 207 days
- Hard freeze (28°F) ends
- Mar 30
No frost in the next 7 nights
National Weather Service forecast, updated Oct 22, 12:57 UTC
- ThuOct 2241°
- FriOct 2338°
- SatOct 2439°
- SunOct 2542°
- MonOct 2648°
- TueOct 2746°
- WedOct 2847°
Planting calendar for Holbrook
Windows count forward or back from the average frost dates above. Click a crop for dates across New York.
TomatoesApr 17–May 1
PumpkinsApr 24–May 8
SunflowersApr 10–May 1
CucumbersApr 24–May 1
CornApr 17–May 1
Sweet potatoesMay 1–May 15
WatermelonApr 24–May 8
Green beansApr 17–May 8
ZucchiniApr 17–May 1
OkraMay 1–May 15
PeppersApr 24–May 8
BasilApr 17–May 1
Butternut squashApr 17–May 1
CantaloupeApr 24–May 8
EggplantApr 24–May 8
PotatoesMar 13–Mar 27
OnionsFeb 27–Mar 20
CarrotsMar 20–Apr 24
LettuceMar 27–Apr 17
BroccoliMar 13–Mar 27
BeetsMar 13–Apr 24
PeasFeb 27–Mar 13
CabbageMar 13–Mar 27
RadishesMar 6–Apr 17
Brussels sproutsMar 27–Apr 10
SpinachFeb 27–Mar 20
CilantroMar 27–Apr 17
KaleMar 13–Mar 27
Collard greensMar 13–Mar 27
TurnipsMar 13–Mar 27
DillApr 10–Apr 24
CeleryApr 17–Apr 24
CauliflowerMar 27–Apr 10
LeeksMar 27–Apr 10
Swiss chardMar 27–Apr 24
ParsleyMar 27–Apr 17
Tulip bulbsOct 19–Nov 23
GarlicOct 12–Nov 16
Daffodil bulbsOct 5–Nov 16
StrawberriesMar 13–Mar 27
AsparagusMar 13–Mar 27Frost probabilities
| Threshold | Spring, 90% chance later | Spring, 50% | Spring, 10% | Fall, 10% chance earlier | Fall, 50% | Fall, 90% |
|---|---|---|---|---|---|---|
| Light frost, 32°F | Mar 31 | Apr 10 | Apr 25 | Oct 18 | Nov 2 | Nov 15 |
| Hard freeze, 28°F | Mar 14 | Mar 30 | Apr 12 | Nov 1 | Nov 14 | Dec 1 |
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 Islip Li Macarthur Airport (USW00004781) sits 1.7 miles from the center of Holbrook at 84 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 Holbrook, NY?
The average last frost date in Holbrook is April 10, based on NOAA 1991–2020 climate normals. There is a 10% chance of frost after April 25.
When is the first frost in Holbrook?
The first frost in fall usually comes around November 2. One year in ten it arrives before October 18.
How long is the growing season in Holbrook?
About 207 days between the average last and first frost.
When should I plant tomatoes in Holbrook?
Plant tomato seedlings outside from April 17 to May 1. Start seeds indoors six to eight weeks earlier.
Nearby in New York
- MedfordApr 18
- East PatchogueApr 10
- CentereachApr 10
- SeldenApr 4
- Central IslipApr 10
- CoramApr 4
- HauppaugeApr 10
- SmithtownApr 10
- ShirleyApr 18
- North Bay ShoreApr 6
- Bay ShoreApr 4
- CommackApr 9