Last frost date in Roselle, NJ
In Roselle, the last spring frost comes around April 11 in an average year. Wait until April 28 if you want 90% odds of no more frost. The first fall frost usually arrives about October 31, which leaves 202 frost-free days. An early freeze before October 14 happens one year in ten.
- Safe after (10% risk)
- Apr 28
- Average first frost
- Oct 31
- Frost-free season
- 202 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 2243°
- FriOct 2339°
- SatOct 2439°
- SunOct 2542°
- MonOct 2649°
- TueOct 2747°
- WedOct 2848°
Planting calendar for Roselle
Windows count forward or back from the average frost dates above. Click a crop for dates across New Jersey.
TomatoesApr 18–May 2
PumpkinsApr 25–May 9
SunflowersApr 11–May 2
CucumbersApr 25–May 2
CornApr 18–May 2
Sweet potatoesMay 2–May 16
WatermelonApr 25–May 9
Green beansApr 18–May 9
ZucchiniApr 18–May 2
OkraMay 2–May 16
PeppersApr 25–May 9
BasilApr 18–May 2
Butternut squashApr 18–May 2
CantaloupeApr 25–May 9
EggplantApr 25–May 9
PotatoesMar 14–Mar 28
OnionsFeb 28–Mar 21
CarrotsMar 21–Apr 25
LettuceMar 28–Apr 18
BroccoliMar 14–Mar 28
BeetsMar 14–Apr 25
PeasFeb 28–Mar 14
CabbageMar 14–Mar 28
RadishesMar 7–Apr 18
Brussels sproutsMar 28–Apr 11
SpinachFeb 28–Mar 21
CilantroMar 28–Apr 18
KaleMar 14–Mar 28
Collard greensMar 14–Mar 28
TurnipsMar 14–Mar 28
DillApr 11–Apr 25
CeleryApr 18–Apr 25
CauliflowerMar 28–Apr 11
LeeksMar 28–Apr 11
Swiss chardMar 28–Apr 25
ParsleyMar 28–Apr 18
Tulip bulbsOct 17–Nov 21
GarlicOct 10–Nov 14
Daffodil bulbsOct 3–Nov 14
StrawberriesMar 14–Mar 28
AsparagusMar 14–Mar 28Frost probabilities
| Threshold | Spring, 90% chance later | Spring, 50% | Spring, 10% | Fall, 10% chance earlier | Fall, 50% | Fall, 90% |
|---|---|---|---|---|---|---|
| Light frost, 32°F | Mar 30 | Apr 11 | Apr 28 | Oct 14 | Oct 31 | Nov 15 |
| Hard freeze, 28°F | Mar 14 | Mar 30 | Apr 12 | Oct 27 | Nov 12 | 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 Cranford (USC00282023) sits 3.5 miles from the center of Roselle at 80 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 Roselle, NJ?
The average last frost date in Roselle is April 11, based on NOAA 1991–2020 climate normals. There is a 10% chance of frost after April 28.
When is the first frost in Roselle?
The first frost in fall usually comes around October 31. One year in ten it arrives before October 14.
How long is the growing season in Roselle?
About 202 days between the average last and first frost.
When should I plant tomatoes in Roselle?
Plant tomato seedlings outside from April 18 to May 2. Start seeds indoors six to eight weeks earlier.
Nearby in New Jersey
- LindenApr 2
- RahwayApr 11
- ElizabethApr 2
- WestfieldApr 11
- CarteretApr 2
- NewarkApr 4
- WoodbridgeApr 11
- SummitApr 18
- BayonneApr 2
- East OrangeApr 4
- HarrisonApr 4
- PlainfieldApr 11