USDA Hardiness Zone 5b
Frost Dates for 12167 — Stamford, New York
NOAA 1991–2020 normals from Lansing Manor, NY (1,100 ft), 7 miles east.
Updated
In Stamford, the last spring frost (32°F) is around May 18 in half of years and has passed by June 1 in nine years out of ten. The first fall frost comes around October 2, as early as September 19 one year in ten, leaving a typical freeze-free season of 137 days (NOAA, Lansing Manor, NY).
- Last spring frost
- May 18
- First fall frost
- October 2
- Growing season
- 137 days
- Hardiness zone
- 5b
50% probability
50% probability
freeze-free, 50%
-15 to -10°F (-26.1 to -23.3°C) coldest night
- First snow
- November 21
- Last snow
- March 30
- Winters with snow
- 100%
- Snow per year
- —
median, 1991–2020
median, 1991–2020
24 of 24 observed
NOAA normal
Frost risk by date in Stamford
Half of springs at Lansing Manor, NY see their last 32°F night by May 18; only one in ten is past it by May 1, and one in ten still has one after June 1. Planting tender crops after May 24 leaves a 30% risk of a frost on them, after May 27 20%, and after June 1 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 October 2 in half of years, as early as September 19 one year in ten, and holds off past October 14 one year in ten. A hard freeze of 28°F follows 10 days later, around October 12; in spring the one-in-ten date for 28°F is May 20, 12 days before the 32°F one. The freeze-free season lasts 137 days in a typical year, shorter than at 92% of the 173 New York stations; it reaches 157 days one year in ten and falls short of 117 one year in ten. On average 165 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 11 days longer, to about May 29, and return around September 23. Severe cold of 16°F or below comes every winter, usually between November 19 and April 1.
| Low | 90% | 80% | 70% | 60% | 50% | 40% | 30% | 20% | 10% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | May 14 | May 20 | May 24 | May 26 | May 29 | May 31 | Jun 3 | Jun 6 | Jun 12 |
| 32°F | May 1 | May 7 | May 11 | May 14 | May 18 | May 21 | May 24 | May 27 | Jun 1 |
| 28°F | Apr 23 | Apr 28 | Apr 30 | May 3 | May 6 | May 9 | May 12 | May 15 | May 20 |
| 24°F | Apr 8 | Apr 14 | Apr 18 | Apr 21 | Apr 24 | Apr 28 | May 1 | May 4 | May 10 |
| 20°F | Mar 30 | Apr 2 | Apr 5 | Apr 8 | Apr 11 | Apr 14 | Apr 17 | Apr 20 | Apr 26 |
| 16°F | Mar 19 | Mar 23 | Mar 28 | Mar 31 | Apr 1 | Apr 3 | Apr 6 | Apr 9 | Apr 14 |
| Low | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Sep 8 | Sep 13 | Sep 17 | Sep 20 | Sep 23 | Sep 26 | Sep 28 | Oct 1 | Oct 4 |
| 32°F | Sep 19 | Sep 24 | Sep 28 | Oct 1 | Oct 2 | Oct 4 | Oct 7 | Oct 10 | Oct 14 |
| 28°F | Oct 1 | Oct 3 | Oct 7 | Oct 10 | Oct 12 | Oct 15 | Oct 19 | Oct 24 | Nov 1 |
| 24°F | Oct 10 | Oct 14 | Oct 18 | Oct 22 | Oct 26 | Oct 31 | Nov 3 | Nov 6 | Nov 11 |
| 20°F | Oct 22 | Oct 29 | Nov 1 | Nov 4 | Nov 7 | Nov 11 | Nov 13 | Nov 17 | Nov 23 |
| 16°F | Nov 3 | Nov 9 | Nov 12 | Nov 16 | Nov 19 | Nov 22 | Nov 25 | Nov 29 | Dec 4 |
Freeze probabilities 1991–2020 at Lansing Manor, 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 12167 →Compare Stamford with another place →
Weather by month in Stamford
July is the warmest month at Lansing Manor, NY, averaging 81°F by day and 56°F at night; January is the coldest at 33°F and 11°F. A freezing night is all but certain in every month from October to May (a 90% chance or more). From July to August the chance of a 32°F night stays under 10% each month. In spring, June still brings one in 11% of years.
Warmth for growing adds up to 2,190 growing degree days a year (base 50°F), fewer than at 77% of the 173 New York stations. 31% of them (670) have built up by the end of June, and July adds the most, 575.
| Month | High °F | Low °F | 32°F night | Nights ≤ 32°F | GDD 50°F |
|---|---|---|---|---|---|
| Jan | 33 | 11 | 100% | 30 | 1 |
| Feb | 35 | 12 | 100% | 27 | 0 |
| Mar | 43 | 20 | 100% | 27 | 5 |
| Apr | 56 | 31 | 100% | 17 | 44 |
| May | 68 | 42 | 90% | 4 | 204 |
| Jun | 77 | 51 | 11% | <1 | 416 |
| Jul | 81 | 56 | 0% | 0 | 575 |
| Aug | 80 | 55 | 0% | 0 | 530 |
| Sep | 73 | 47 | 40% | 1 | 315 |
| Oct | 61 | 36 | 99% | 10 | 84 |
| Nov | 49 | 27 | 100% | 21 | 14 |
| Dec | 39 | 19 | 100% | 29 | 2 |
Monthly normals 1991–2020 at Lansing Manor, NY (1,100 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, Cobleskill 2 ESE, NY, 19 miles northeast of Stamford, has a last frost 9 days earlier (May 9), a first frost 2 days later (October 4), a season 11 days longer.
When it snows in Stamford, New York
The first measurable snow (0.1 inch or more) in Stamford usually arrives around November 21, and the last of the season around March 30. Those are the middle dates across the winters of 1991–2020 at Lansing Manor, NY, 7.1 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 49 days after the last snow.
Planting calendar for 12167
| When | What to do |
|---|---|
| March 9 – March 23 | Start peppers and aubergines indoorsThey need eight to ten weeks under lights before they can go out. |
| March 23 – April 6 | Start tomatoes indoorsSix to eight weeks gives a transplant big enough to set fruit early. |
| April 20 – May 4 | Sow peas, spinach, lettuce, radish outdoorsThese tolerate light frost and prefer to germinate in cool soil. |
| May 18 onward | Transplant tomatoes, peppers, basil, squash, cucumbersThe average last freeze has passed — still watch the actual forecast. |
| by July 10 | Sow the autumn crop of carrots, beets and brassicasThey need about twelve weeks to size up before growth stops. |
| by September 18 | Harvest tender crops, or be ready to cover themA first freeze two weeks early is well within normal variation. |
| October 2 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 12167 is 7 miles from Lansing Manor, NY, which stands at 1,100 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. The 2023 USDA Plant Hardiness Zone Map lists ZIP 12167 in zone 5b, the band where the coldest night of the year averaged -15 to -10°F (-26.1 to -23.3°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.