Cold Spring Harbor, NY frost dates
Last spring frostApr 9median date
First fall frostNov 10median date
Growing season215 daysfrost-free
Hardiness zone7bZone 7b
How Cold Spring Harbor compares
- In 8 years out of 10, the last spring frost in Cold Spring Harbor falls between March 30 and April 23, a 24-day window. The first fall frost falls between October 30 and November 26.
- The median last frost is 24 days earlier than the New York median of May 3.
- Its 215-day growing season is longer than 91% of the 1,610 New York places with a regular frost season (state median 163 days).
- The last frost is 4 days later than the zone 7b median of Apr 5. Hardiness zones measure winter cold, not season length, so use these dates rather than a zone 7b chart.
- The weather station records an average of 88 nights a year at or below 32°F.
- Compared with Levittown, NY, 16 km away, the last frost here is 6 days later than there and the growing season is 7 days shorter.
Frost probability
| Chance of frost after | Date |
|---|---|
| 90% (early) | March 30 |
| 50% (median) | April 9 |
| 10% (safe for tender plants) | April 23 |
| Chance of frost before | Date |
|---|---|
| 10% (early) | October 30 |
| 50% (median) | November 10 |
| 90% (late) | November 26 |
Frost here means 32°F (0°C). A median date means half of years have their last frost earlier and half later.
Planting calendar for Cold Spring Harbor, NY
Cold Spring Harbor, NY frost dates — last frost Apr 9, first frost Nov 10, zone 7b. whenisthelastfrost.com
Crop
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Start indoors: Jan 15 to Jan 29Transplant outside: Mar 12 to Mar 26
Start indoors: Jan 29 to Feb 12Transplant outside: Apr 23 to May 7
Start indoors: Jan 29 to Feb 12Transplant outside: Apr 23 to May 7
Start indoors: Feb 12 to Feb 26Transplant outside: Apr 16 to Apr 30
Start indoors: Feb 12 to Feb 26Transplant outside: Mar 19 to Apr 2Sow outdoors: Mar 12 to Apr 16Plant for fall: Sep 15 to Oct 13
Start indoors: Feb 12 to Feb 26Transplant outside: Mar 12 to Mar 26Sow outdoors: Mar 12 to Mar 26Plant for fall: Sep 1 to Sep 22
Start indoors: Feb 12 to Feb 26Transplant outside: Mar 26 to Apr 9Plant for fall: Aug 4 to Aug 25
Start indoors: Feb 12 to Feb 26Transplant outside: Mar 19 to Apr 2Plant for fall: Aug 4 to Aug 25
Start indoors: Feb 12 to Feb 26Transplant outside: Mar 26 to Apr 9Plant for fall: Aug 4 to Aug 25
Start indoors: Feb 26 to Mar 12Transplant outside: Apr 30 to May 14Sow outdoors: Apr 30 to May 14
Start indoors: Feb 26 to Mar 12Transplant outside: Apr 16 to Apr 30
Sow outdoors: Feb 26 to Mar 19Plant for fall: Aug 18 to Sep 8
Sow outdoors: Feb 26 to Mar 19Plant for fall: Sep 15 to Oct 6
Sow outdoors: Mar 5 to Apr 16Plant for fall: Sep 29 to Oct 20
Start indoors: Mar 12 to Mar 19Transplant outside: Apr 23 to Apr 30Sow outdoors: Apr 16 to Apr 30Plant for fall: Aug 25 to Sep 8
Start indoors: Mar 12 to Mar 19Sow outdoors: Apr 16 to Apr 30Plant for fall: Sep 1 to Sep 15
Start indoors: Mar 12 to Mar 19Sow outdoors: Apr 16 to Apr 30
Start indoors: Mar 12 to Mar 19Transplant outside: Apr 23 to May 7
Sow outdoors: Mar 19 to Apr 16Plant for fall: Aug 18 to Sep 1
Sow outdoors: Mar 19 to Apr 16Plant for fall: Sep 1 to Sep 15
Sow outdoors: Mar 19 to Apr 9
Sow outdoors: Mar 26 to Apr 23Plant for fall: Sep 1 to Sep 15
Sow outdoors: Mar 26 to Apr 16Plant for fall: Sep 15 to Oct 6
Sow outdoors: Apr 16 to May 7Plant for fall: Aug 25 to Sep 8
Sow outdoors: Apr 16 to Apr 30
Transplant outside: Apr 23 to May 14
Plant for fall: Oct 27 to Dec 1
Start indoorsTransplant outsideSow outdoorsPlant for fallMedian frost dates
When to plant vegetables in Cold Spring Harbor, NY
| Crop | Start indoors | Transplant | Sow outdoors | Fall crop |
|---|---|---|---|---|
| Onions | Jan 15 – Jan 29 | Mar 12 – Mar 26 | — | — |
| Peppers | Jan 29 – Feb 12 | Apr 23 – May 7 | — | — |
| Eggplant | Jan 29 – Feb 12 | Apr 23 – May 7 | — | — |
| Tomatoes | Feb 12 – Feb 26 | Apr 16 – Apr 30 | — | — |
| Lettuce | Feb 12 – Feb 26 | Mar 19 – Apr 2 | Mar 12 – Apr 16 | Sep 15 – Oct 13 |
| Kale | Feb 12 – Feb 26 | Mar 12 – Mar 26 | Mar 12 – Mar 26 | Sep 1 – Sep 22 |
| Broccoli | Feb 12 – Feb 26 | Mar 26 – Apr 9 | — | Aug 4 – Aug 25 |
| Cabbage | Feb 12 – Feb 26 | Mar 19 – Apr 2 | — | Aug 4 – Aug 25 |
| Cauliflower | Feb 12 – Feb 26 | Mar 26 – Apr 9 | — | Aug 4 – Aug 25 |
| Okra | Feb 26 – Mar 12 | Apr 30 – May 14 | Apr 30 – May 14 | — |
| Basil | Feb 26 – Mar 12 | Apr 16 – Apr 30 | — | — |
| Peas | — | — | Feb 26 – Mar 19 | Aug 18 – Sep 8 |
| Spinach | — | — | Feb 26 – Mar 19 | Sep 15 – Oct 6 |
| Radishes | — | — | Mar 5 – Apr 16 | Sep 29 – Oct 20 |
| Cucumbers | Mar 12 – Mar 19 | Apr 23 – Apr 30 | Apr 16 – Apr 30 | Aug 25 – Sep 8 |
| Zucchini & Summer Squash | Mar 12 – Mar 19 | — | Apr 16 – Apr 30 | Sep 1 – Sep 15 |
| Winter Squash & Pumpkins | Mar 12 – Mar 19 | — | Apr 16 – Apr 30 | — |
| Melons & Watermelon | Mar 12 – Mar 19 | Apr 23 – May 7 | — | — |
| Carrots | — | — | Mar 19 – Apr 16 | Aug 18 – Sep 1 |
| Beets | — | — | Mar 19 – Apr 16 | Sep 1 – Sep 15 |
| Potatoes | — | — | Mar 19 – Apr 9 | — |
| Swiss Chard | — | — | Mar 26 – Apr 23 | Sep 1 – Sep 15 |
| Cilantro | — | — | Mar 26 – Apr 16 | Sep 15 – Oct 6 |
| Green Beans | — | — | Apr 16 – May 7 | Aug 25 – Sep 8 |
| Sweet Corn | — | — | Apr 16 – Apr 30 | — |
| Sweet Potatoes | — | Apr 23 – May 14 | — | — |
| Garlic | — | — | — | Oct 27 – Dec 1 |
Dates come from the median frost dates and common extension-service timing. Adjust for your soil temperature, microclimate and the varieties you grow.
About these dates
Based on 1991–2020 NOAA climate normals for the Centerport, NY weather station, 6 km away (elevation 30 ft (9 m)).
Frost dates near Cold Spring Harbor
- Huntington Apr 9 · Nov 10
- Woodbury Apr 6 · Nov 6
- Greenlawn Apr 9 · Nov 10
- Centerport Apr 9 · Nov 10
- Syosset Apr 6 · Nov 6
- Oyster Bay Apr 9 · Nov 10
- Melville Apr 6 · Nov 6
- East Norwich Apr 9 · Nov 10
- Huntington Station Apr 9 · Nov 10
- Plainview Apr 6 · Nov 6
Frequently asked questions
When is the last frost in Cold Spring Harbor, NY?
The median last spring frost in Cold Spring Harbor, NY is April 9. There is still about a 10% chance of frost after April 23, so wait until then to plant frost-tender crops like tomatoes and peppers.
When is the first frost in Cold Spring Harbor, NY?
The median first fall frost is November 10, with about a 10% chance of frost before October 30.
How long is the growing season in Cold Spring Harbor, NY?
About 215 days between the median last spring frost and first fall frost.
What planting zone is Cold Spring Harbor, NY?
Cold Spring Harbor, NY is in USDA hardiness zone 7b.