USDA Hardiness Zone 7b
Frost Dates for 07601 — Hackensack, New Jersey
NOAA 1991–2020 normals from Teterboro Airport, NJ (9 ft), 3 miles south.
Updated
In Hackensack, the last spring frost (32°F) is around April 3 in half of years and has passed by April 16 in nine years out of ten. The first fall frost comes around November 4, as early as October 21 one year in ten, leaving a typical freeze-free season of 215 days (NOAA, Teterboro Airport, NJ).
- Last spring frost
- April 3
- First fall frost
- November 4
- Growing season
- 215 days
- Hardiness zone
- 7b
50% probability
50% probability
freeze-free, 50%
5 to 10°F (-15.0 to -12.2°C) coldest night
- First snow
- December 10
- Last snow
- March 18
- Winters with snow
- 100%
- Snow per year
- 29.8"
median, 1991–2020
median, 1991–2020
30 of 30 observed
NOAA normal
Frost risk by date in Hackensack
Half of springs at Teterboro Airport, NJ see their last 32°F night by April 3; only one in ten is past it by March 20, and one in ten still has one after April 16. Planting tender crops after April 7 leaves a 30% risk of a frost on them, after April 10 20%, and after April 16 10%. The 13 days between the even-odds date and the one-in-ten date is narrower than at 82% of the 56 New Jersey stations behind this site's ZIP pages.
In fall the first 32°F night comes by November 4 in half of years, as early as October 21 one year in ten, and holds off past November 20 one year in ten. A hard freeze of 28°F follows 12 days later, around November 16; in spring the one-in-ten date for 28°F is April 4, 12 days before the 32°F one. The freeze-free season lasts 215 days in a typical year, longer than at 80% of the 56 New Jersey stations; it reaches 233 days one year in ten and falls short of 195 one year in ten. On average 89 nights a year drop to 32°F or below. Nights of 36°F, when frost can still settle on leaves in low, open spots, continue 13 days longer, to about April 16, and return around October 24. Severe cold of 16°F or below comes in 99% of winters, usually between December 31 and February 19.
| Low | 90% | 80% | 70% | 60% | 50% | 40% | 30% | 20% | 10% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Apr 3 | Apr 7 | Apr 10 | Apr 13 | Apr 16 | Apr 19 | Apr 22 | Apr 27 | May 2 |
| 32°F | Mar 20 | Mar 26 | Mar 30 | Apr 1 | Apr 3 | Apr 4 | Apr 7 | Apr 10 | Apr 16 |
| 28°F | Mar 7 | Mar 13 | Mar 16 | Mar 20 | Mar 23 | Mar 26 | Mar 29 | Apr 1 | Apr 4 |
| 24°F | Feb 25 | Mar 2 | Mar 5 | Mar 9 | Mar 12 | Mar 14 | Mar 18 | Mar 21 | Mar 26 |
| 20°F | Feb 12 | Feb 19 | Feb 24 | Feb 27 | Mar 2 | Mar 5 | Mar 8 | Mar 13 | Mar 18 |
| 16°F99% of yrs | Jan 27 | Feb 3 | Feb 9 | Feb 14 | Feb 19 | Feb 23 | Feb 27 | Mar 2 | Mar 9 |
| Low | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Oct 10 | Oct 15 | Oct 18 | Oct 21 | Oct 24 | Oct 27 | Oct 29 | Nov 1 | Nov 6 |
| 32°F | Oct 21 | Oct 26 | Oct 30 | Nov 2 | Nov 4 | Nov 8 | Nov 11 | Nov 15 | Nov 20 |
| 28°F | Nov 2 | Nov 7 | Nov 11 | Nov 14 | Nov 16 | Nov 19 | Nov 24 | Nov 29 | Dec 4 |
| 24°F | Nov 13 | Nov 18 | Nov 23 | Nov 28 | Dec 1 | Dec 4 | Dec 8 | Dec 14 | Dec 21 |
| 20°F | Nov 28 | Dec 2 | Dec 8 | Dec 12 | Dec 17 | Dec 21 | Dec 25 | Dec 31 | Jan 6 |
| 16°F99% of yrs | Dec 10 | Dec 17 | Dec 22 | Dec 27 | Dec 31 | Jan 3 | Jan 8 | Jan 14 | Jan 23 |
Freeze probabilities 1991–2020 at Teterboro Airport, NJ, from NOAA NCEI U.S. Climate Normals. Where a temperature is reached in fewer than 99.5% of years, the dates describe only the years that reach it. Not a forecast.
Frost risk on any date in 07601 →Compare Hackensack with another place →
Weather by month in Hackensack
July is the warmest month at Teterboro Airport, NJ, averaging 87°F by day and 69°F at night; January is the coldest at 40°F and 26°F. A freezing night is all but certain in every month from November to March (a 90% chance or more). From May to September the chance of a 32°F night stays under 10% each month. In spring, April still brings one in 61% of years.
Warmth for growing adds up to 3,853 growing degree days a year (base 50°F), more than at 84% of the 56 New Jersey stations. 33% of them (1,276) have built up by the end of June, and July adds the most, 866. Precipitation totals 46.4 inches a year, most in July (4.5") and least in February (2.8"); May to September bring 45% of it.
| Month | High °F | Low °F | Precip. in | 32°F night | Nights ≤ 32°F | GDD 50°F |
|---|---|---|---|---|---|---|
| Jan | 40 | 26 | 3.3 | 100% | 24 | 3 |
| Feb | 43 | 27 | 2.8 | 100% | 21 | 4 |
| Mar | 51 | 34 | 4.1 | 99% | 14 | 31 |
| Apr | 63 | 44 | 4.0 | 61% | 2 | 150 |
| May | 73 | 53 | 3.9 | 0% | 0 | 410 |
| Jun | 82 | 63 | 4.3 | 0% | 0 | 676 |
| Jul | 87 | 69 | 4.5 | 0% | 0 | 866 |
| Aug | 85 | 67 | 4.3 | 0% | 0 | 812 |
| Sep | 78 | 60 | 4.1 | 0% | 0 | 575 |
| Oct | 67 | 48 | 3.7 | 35% | 1 | 251 |
| Nov | 56 | 38 | 3.3 | 97% | 7 | 60 |
| Dec | 45 | 31 | 4.1 | 100% | 20 | 13 |
Monthly normals 1991–2020 at Teterboro Airport, NJ (9 ft), NOAA NCEI. "32°F night": chance of at least one in the month. GDD: growing degree days, base 50°F.
Compared with the next station
The nearest other station, New York Cntrl Pk Twr, NY, 9 miles southeast of Hackensack, has a last frost 4 days earlier (March 30), a first frost 16 days later (November 20), a season 21 days longer.
When it snows in Hackensack, New Jersey
The first measurable snow (0.1 inch or more) in Hackensack usually arrives around December 10, and the last of the season around March 18. Those are the middle dates across the winters of 1991–2020 at New York Cntrl Pk Twr, NY, 8.7 miles away: half of years saw snow earlier, half later. Every one of those winters saw snow. The last 32°F night of spring typically comes 16 days after the last snow.
Planting calendar for 07601
| When | What to do |
|---|---|
| January 23 – February 6 | Start peppers and aubergines indoorsThey need eight to ten weeks under lights before they can go out. |
| February 6 – February 20 | Start tomatoes indoorsSix to eight weeks gives a transplant big enough to set fruit early. |
| March 6 – March 20 | Sow peas, spinach, lettuce, radish outdoorsThese tolerate light frost and prefer to germinate in cool soil. |
| April 3 onward | Transplant tomatoes, peppers, basil, squash, cucumbersThe average last freeze has passed — still watch the actual forecast. |
| by August 12 | Sow the autumn crop of carrots, beets and brassicasThey need about twelve weeks to size up before growth stops. |
| by October 21 | Harvest tender crops, or be ready to cover themA first freeze two weeks early is well within normal variation. |
| November 4 onward | Plant garlic, mulch beds, lift tender bulbsGarlic wants a cold spell; bare soil loses structure over winter. |
The weeks before and after the 50% dates are general rules of thumb, not NOAA figures; a seed packet gives the timing for each variety.
Where these figures come from
ZIP 07601 is 3 miles from Teterboro Airport, NJ, which stands at 9 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. 40 other ZIP codes share the station; its figures are presented in full for 07055 (Passaic). The 2023 USDA Plant Hardiness Zone Map lists ZIP 07601 in zone 7b, the band where the coldest night of the year averaged 5 to 10°F (-15.0 to -12.2°C) over 1991–2020; a zone describes winter lows, not frost dates.
Frost dates across New Jersey →
Hardiness zone and temperature range: USDA Plant Hardiness Zone Map 2023 (USDA-ARS, Oregon State University), ZIP-code listing, unchanged. °C converted from °F by this site.
Thirty-year averages, not a forecast: check the forecast before planting out. How stations are matched and which pages are offered to search engines: methodology.