Frost dates / New Jersey / Newark
Frost dates in Newark, NJ
The station on this page is HARRISON, NJ US (USC00283704), 2 miles from the city point. Population in the Census 2024 estimate is 317,303.
Zone 7bUSDA average annual extreme minimum 5°F to 10°F, from ZIP 07102 (0.8 miles from the city point used on this page).
Outside the median season Growing seasonTicks: 10%, 50%, and 90%
Last 32°F in spring
NCEI’s probability is the chance the last spring minimum of 32°F or lower occurs on or after the date.
| Probability | Date | How to read it |
|---|---|---|
| 90% | March 23 | Earlier date. A last 32°F on or after this day is common. |
| 50% | April 4 | Median. |
| 10% | April 16 | Later date. A last 32°F on or after this day is uncommon. |
First 32°F in fall
NCEI’s probability is the chance the first autumn minimum of 32°F or lower occurs on or before the date.
| Probability | Date | How to read it |
|---|---|---|
| 10% | October 25 | Earlier date. A first 32°F on or before this day is uncommon. |
| 50% | November 6 | Median. |
| 90% | November 22 | Later date. A first 32°F on or before this day is common. |
32°F growing-season length
Days between the last spring 32°F and the first autumn 32°F. The figure is a length the season meets or exceeds at that probability, from NCEI, not a subtraction done on this site.
| Probability the season is at least this long | Days |
|---|---|
| 10% | 237 |
| 50% | 216 |
| 90% | 197 |
28°F threshold
| 10% | 50% | 90% | |
|---|---|---|---|
| Last, on or after | April 5 | March 26 | March 11 |
| First, on or before | November 5 | November 19 | December 5 |
| Season at least | 259 days | 238 days | 218 days |
36°F threshold
| 10% | 50% | 90% | |
|---|---|---|---|
| Last, on or after | May 2 | April 16 | April 4 |
| First, on or before | October 12 | October 27 | November 9 |
| Season at least | 211 days | 192 days | 173 days |
Station HARRISON, NJ US (USC00283704). Completeness flag R, 15 years used for the 32°F dates. NCEI’s annual probability of at least one day at or below 32°F is 100%. Freeze dates are conditional on that threshold occurring. Elevation 7.3 m. The same probability language applies to the 28°F and 36°F rows when those dates passed the same quality checks.
Planting calendar for Newark · Zone 7b
Check a crop against this station
Newark, NJ
Zone 7bAverage annual extreme minimum 5°F to 10°F
Outside the median season Growing seasonTicks: 10%, 50%, and 90%
New Jersey. Nearest qualified station: HARRISON, NJ US (USC00283704), 2 miles. Median last 32°F April 4. Median first 32°F November 6. The 50% growing-season length is 216 days.
Open the ZIP page · Crop guides for New Jersey
32°F probabilities at this station
| 10% | 50% | 90% | |
|---|---|---|---|
| Last 32°F on or after | April 16 | April 4 | March 23 |
| First 32°F on or before | October 25 | November 6 | November 22 |
Column order matches the NCEI file: for the last freeze, 10% is the later date and 90% is the earlier date. How to read the probabilities.
Planting calendar
Windows below are from Rutgers NJAES, FS129: Planning a Vegetable Garden, retrieved 2026-10-10. The fact sheet gives one statewide month list. Footnote dated April 2020: Mr=March; Ap=April; Ma=May; Ju=June; Jl=July; Au=August; Se=September. Consecutive months are stored as one range; a gap, such as April and July, stays two windows.
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