Last frost date in Selden, NY
The average last frost in Selden is April 4. By April 19 the chance of another 32°F night drops to 1 in 10. The first fall frost usually arrives about November 7, which leaves 215 frost-free days. An early freeze before October 20 happens one year in ten.
- Safe after (10% risk)
- Apr 19
- Average first frost
- Nov 7
- Frost-free season
- 215 days
- Hard freeze (28°F) ends
- Mar 27
No frost in the next 7 nights
National Weather Service forecast, updated Oct 22, 12:57 UTC
- ThuOct 2241°
- FriOct 2338°
- SatOct 2440°
- SunOct 2543°
- MonOct 2647°
- TueOct 2746°
- WedOct 2846°
Planting calendar for Selden
Windows count forward or back from the average frost dates above. Click a crop for dates across New York.
TomatoesApr 11–Apr 25
PumpkinsApr 18–May 2
SunflowersApr 4–Apr 25
CucumbersApr 18–Apr 25
CornApr 11–Apr 25
Sweet potatoesApr 25–May 9
WatermelonApr 18–May 2
Green beansApr 11–May 2
ZucchiniApr 11–Apr 25
OkraApr 25–May 9
PeppersApr 18–May 2
BasilApr 11–Apr 25
Butternut squashApr 11–Apr 25
CantaloupeApr 18–May 2
EggplantApr 18–May 2
PotatoesMar 7–Mar 21
OnionsFeb 21–Mar 14
CarrotsMar 14–Apr 18
LettuceMar 21–Apr 11
BroccoliMar 7–Mar 21
BeetsMar 7–Apr 18
PeasFeb 21–Mar 7
CabbageMar 7–Mar 21
RadishesFeb 28–Apr 11
Brussels sproutsMar 21–Apr 4
SpinachFeb 21–Mar 14
CilantroMar 21–Apr 11
KaleMar 7–Mar 21
Collard greensMar 7–Mar 21
TurnipsMar 7–Mar 21
DillApr 4–Apr 18
CeleryApr 11–Apr 18
CauliflowerMar 21–Apr 4
LeeksMar 21–Apr 4
Swiss chardMar 21–Apr 18
ParsleyMar 21–Apr 11
Tulip bulbsOct 24–Nov 28
GarlicOct 17–Nov 21
Daffodil bulbsOct 10–Nov 21
StrawberriesMar 7–Mar 21
AsparagusMar 7–Mar 21Frost probabilities
| Threshold | Spring, 90% chance later | Spring, 50% | Spring, 10% | Fall, 10% chance earlier | Fall, 50% | Fall, 90% |
|---|---|---|---|---|---|---|
| Light frost, 32°F | Mar 23 | Apr 4 | Apr 19 | Oct 20 | Nov 7 | Nov 24 |
| Hard freeze, 28°F | Mar 11 | Mar 27 | Apr 7 | Nov 2 | Nov 22 | Dec 9 |
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 Mount Sinai (USC00305606) sits 4.5 miles from the center of Selden at 50 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 Selden, NY?
The average last frost date in Selden is April 4, based on NOAA 1991–2020 climate normals. There is a 10% chance of frost after April 19.
When is the first frost in Selden?
The first frost in fall usually comes around November 7. One year in ten it arrives before October 20.
How long is the growing season in Selden?
About 215 days between the average last and first frost.
When should I plant tomatoes in Selden?
Plant tomato seedlings outside from April 11 to April 25. Start seeds indoors six to eight weeks earlier.
Nearby in New York
- CentereachApr 10
- CoramApr 4
- MedfordApr 18
- HolbrookApr 10
- East PatchogueApr 10
- SmithtownApr 10
- HauppaugeApr 10
- Central IslipApr 10
- ShirleyApr 18
- CommackApr 9
- North Bay ShoreApr 6
- Bay ShoreApr 4