USDA Hardiness Zone 7b
Frost Dates for 11725 — Commack, New York
NOAA 1991–2020 normals from Centerport, NY (30 ft), 6 miles northwest.
Updated
In Commack, the last spring frost (32°F) is around April 9 in half of years and has passed by April 23 in nine years out of ten. The first fall frost comes around November 10, as early as October 30 one year in ten, leaving a typical freeze-free season of 215 days (NOAA, Centerport, NY).
- Last spring frost
- April 9
- First fall frost
- November 10
- 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 16
- Winters with snow
- 100%
- Snow per year
- —
median, 1991–2020
median, 1991–2020
15 of 15 observed
NOAA normal
Frost risk by date in Commack
Half of springs at Centerport, NY see their last 32°F night by April 9; only one in ten is past it by March 30, and one in ten still has one after April 23. Planting tender crops after April 14 leaves a 30% risk of a frost on them, after April 19 20%, and after April 23 10%. The 14 days between the even-odds date and the one-in-ten date is narrower than at 63% of the 173 New York stations behind this site's ZIP pages.
In fall the first 32°F night comes by November 10 in half of years, as early as October 30 one year in ten, and holds off past November 26 one year in ten. A hard freeze of 28°F follows 11 days later, around November 21; in spring the one-in-ten date for 28°F is April 10, 13 days before the 32°F one. The freeze-free season lasts 215 days in a typical year, longer than at 92% of the 173 New York stations; it reaches 234 days one year in ten and falls short of 197 one year in ten. On average 88 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 22, and return around October 31. Severe cold of 16°F or below comes every winter, usually between December 30 and February 26.
| Low | 90% | 80% | 70% | 60% | 50% | 40% | 30% | 20% | 10% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Apr 9 | Apr 13 | Apr 17 | Apr 19 | Apr 22 | Apr 25 | Apr 29 | May 2 | May 7 |
| 32°F | Mar 30 | Apr 2 | Apr 4 | Apr 6 | Apr 9 | Apr 11 | Apr 14 | Apr 19 | Apr 23 |
| 28°F | Mar 16 | Mar 21 | Mar 24 | Mar 27 | Mar 30 | Apr 1 | Apr 3 | Apr 6 | Apr 10 |
| 24°F | Mar 4 | Mar 9 | Mar 13 | Mar 16 | Mar 19 | Mar 21 | Mar 24 | Mar 28 | Apr 1 |
| 20°F | Feb 19 | Feb 27 | Mar 3 | Mar 6 | Mar 9 | Mar 12 | Mar 16 | Mar 19 | Mar 23 |
| 16°F | Feb 3 | Feb 9 | Feb 16 | Feb 22 | Feb 26 | Mar 2 | Mar 5 | Mar 10 | Mar 16 |
| Low | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Oct 17 | Oct 22 | Oct 26 | Oct 29 | Oct 31 | Nov 2 | Nov 5 | Nov 8 | Nov 12 |
| 32°F | Oct 30 | Nov 2 | Nov 5 | Nov 7 | Nov 10 | Nov 13 | Nov 17 | Nov 20 | Nov 26 |
| 28°F | Nov 6 | Nov 12 | Nov 16 | Nov 18 | Nov 21 | Nov 25 | Nov 29 | Dec 3 | Dec 7 |
| 24°F | Nov 16 | Nov 22 | Nov 26 | Nov 30 | Dec 3 | Dec 6 | Dec 9 | Dec 13 | Dec 20 |
| 20°F | Nov 28 | Dec 3 | Dec 7 | Dec 12 | Dec 16 | Dec 20 | Dec 24 | Dec 28 | Jan 4 |
| 16°F | Dec 9 | Dec 16 | Dec 22 | Dec 26 | Dec 30 | Jan 2 | Jan 6 | Jan 11 | Jan 20 |
Freeze probabilities 1991–2020 at Centerport, NY, 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 11725 →Compare Commack with another place →
Weather by month in Commack
July is the warmest month at Centerport, NY, averaging 83°F by day and 66°F at night; January is the coldest at 38°F and 25°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 84% of years.
Warmth for growing adds up to 3,244 growing degree days a year (base 50°F), more than at 91% of the 173 New York stations. 31% of them (1,013) have built up by the end of June, and July adds the most, 759. Precipitation totals 48.5 inches a year, most in September (4.7") and least in February (3.1"); May to September bring 43% of it.
| Month | High °F | Low °F | Precip. in | 32°F night | Nights ≤ 32°F | GDD 50°F |
|---|---|---|---|---|---|---|
| Jan | 38 | 25 | 3.7 | 100% | 24 | 2 |
| Feb | 40 | 25 | 3.1 | 100% | 22 | 2 |
| Mar | 47 | 31 | 4.2 | 100% | 17 | 16 |
| Apr | 60 | 41 | 4.1 | 84% | 2 | 98 |
| May | 70 | 51 | 3.9 | 3% | 0 | 316 |
| Jun | 78 | 60 | 4.3 | 0% | 0 | 579 |
| Jul | 83 | 66 | 3.8 | 0% | 0 | 759 |
| Aug | 81 | 65 | 4.3 | 0% | 0 | 719 |
| Sep | 74 | 59 | 4.7 | 0% | 0 | 500 |
| Oct | 63 | 49 | 4.3 | 14% | 0 | 203 |
| Nov | 52 | 39 | 3.5 | 92% | 5 | 42 |
| Dec | 43 | 31 | 4.6 | 100% | 18 | 7 |
Monthly normals 1991–2020 at Centerport, NY (30 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, Islip Li Macarthur Airport, NY, 10 miles east of Commack, has a last frost 1 day later (April 10), a first frost 8 days earlier (November 2), a season 8 days shorter.
When it snows in Commack, New York
The first measurable snow (0.1 inch or more) in Commack usually arrives around December 10, and the last of the season around March 16. Those are the middle dates across the winters of 1991–2020 at Centerport, NY, 5.7 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 24 days after the last snow.
Planting calendar for 11725
| When | What to do |
|---|---|
| January 29 – February 12 | Start peppers and aubergines indoorsThey need eight to ten weeks under lights before they can go out. |
| February 12 – February 26 | Start tomatoes indoorsSix to eight weeks gives a transplant big enough to set fruit early. |
| March 12 – March 26 | Sow peas, spinach, lettuce, radish outdoorsThese tolerate light frost and prefer to germinate in cool soil. |
| April 9 onward | Transplant tomatoes, peppers, basil, squash, cucumbersThe average last freeze has passed — still watch the actual forecast. |
| by August 18 | Sow the autumn crop of carrots, beets and brassicasThey need about twelve weeks to size up before growth stops. |
| by October 27 | Harvest tender crops, or be ready to cover themA first freeze two weeks early is well within normal variation. |
| November 10 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 11725 is 6 miles from Centerport, NY, which stands at 30 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. 11 other ZIP codes share the station; its figures are presented in full for 11746 (Huntington Station). The 2023 USDA Plant Hardiness Zone Map lists ZIP 11725 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.
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.