USDA Hardiness Zone 4b
Frost Dates for 05655 — Hyde Park, Vermont
NOAA 1991–2020 normals from Eden 2 S, VT (1,456 ft), 5 miles northeast.
Updated
In Hyde Park, the last spring frost (32°F) is around May 5 in half of years and has passed by May 20 in nine years out of ten. The first fall frost comes around October 8, as early as September 28 one year in ten, leaving a typical freeze-free season of 155 days (NOAA, Eden 2 S, VT).
- Last spring frost
- May 5
- First fall frost
- October 8
- Growing season
- 155 days
- Hardiness zone
- 4b
50% probability
50% probability
freeze-free, 50%
-25 to -20°F (-31.7 to -28.9°C) coldest night
- First snow
- October 23
- Last snow
- April 25
- Winters with snow
- 100%
- Snow per year
- —
median, 1991–2020
median, 1991–2020
15 of 15 observed
NOAA normal
Frost risk by date in Hyde Park
Half of springs at Eden 2 S, VT see their last 32°F night by May 5; only one in ten is past it by April 24, and one in ten still has one after May 20. Planting tender crops after May 12 leaves a 30% risk of a frost on them, after May 15 20%, and after May 20 10%. The 15 days between the even-odds date and the one-in-ten date is narrower than at 24% of the 41 Vermont stations behind this site's ZIP pages.
In fall the first 32°F night comes by October 8 in half of years, as early as September 28 one year in ten, and holds off past October 24 one year in ten. A hard freeze of 28°F follows 11 days later, around October 19; in spring the one-in-ten date for 28°F is May 7, 13 days before the 32°F one. The freeze-free season lasts 155 days in a typical year, longer than at 76% of the 41 Vermont stations; it reaches 173 days one year in ten and falls short of 136 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 13 days longer, to about May 18, and return around September 28. Severe cold of 16°F or below comes every winter, usually between November 19 and April 2.
| Low | 90% | 80% | 70% | 60% | 50% | 40% | 30% | 20% | 10% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | May 4 | May 8 | May 12 | May 15 | May 18 | May 21 | May 23 | May 27 | May 31 |
| 32°F | Apr 24 | Apr 28 | Apr 30 | May 3 | May 5 | May 8 | May 12 | May 15 | May 20 |
| 28°F | Apr 14 | Apr 19 | Apr 21 | Apr 24 | Apr 26 | Apr 29 | May 1 | May 3 | May 7 |
| 24°F | Apr 5 | Apr 8 | Apr 11 | Apr 14 | Apr 17 | Apr 19 | Apr 21 | Apr 23 | Apr 26 |
| 20°F | Mar 29 | Apr 2 | Apr 4 | Apr 6 | Apr 7 | Apr 9 | Apr 12 | Apr 16 | Apr 19 |
| 16°F | Mar 20 | Mar 24 | Mar 28 | Mar 31 | Apr 2 | Apr 3 | Apr 5 | Apr 8 | Apr 12 |
| Low | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Sep 15 | Sep 20 | Sep 23 | Sep 25 | Sep 28 | Sep 30 | Oct 2 | Oct 6 | Oct 10 |
| 32°F | Sep 28 | Oct 1 | Oct 3 | Oct 5 | Oct 8 | Oct 10 | Oct 14 | Oct 18 | Oct 24 |
| 28°F | Oct 5 | Oct 10 | Oct 13 | Oct 16 | Oct 19 | Oct 23 | Oct 27 | Oct 31 | Nov 4 |
| 24°F | Oct 16 | Oct 22 | Oct 26 | Oct 30 | Nov 1 | Nov 3 | Nov 6 | Nov 9 | Nov 14 |
| 20°F | Oct 29 | Nov 2 | Nov 5 | Nov 7 | Nov 10 | Nov 13 | Nov 16 | Nov 19 | Nov 23 |
| 16°F | Nov 7 | Nov 10 | Nov 13 | Nov 16 | Nov 19 | Nov 22 | Nov 24 | Nov 28 | Dec 1 |
Freeze probabilities 1991–2020 at Eden 2 S, VT, 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 05655 →Compare Hyde Park with another place →
Weather by month in Hyde Park
July is the warmest month at Eden 2 S, VT, averaging 75°F by day and 58°F at night; January is the coldest at 23°F and 6°F. A freezing night is all but certain in every month from October to April (a 90% chance or more). From June to August the chance of a 32°F night stays under 10% each month. In spring, May still brings one in 70% of years.
Warmth for growing adds up to 1,855 growing degree days a year (base 50°F), fewer than at 71% of the 41 Vermont stations. 31% of them (578) have built up by the end of June, and July adds the most, 510.
| Month | High °F | Low °F | 32°F night | Nights ≤ 32°F | GDD 50°F |
|---|---|---|---|---|---|
| Jan | 23 | 6 | 100% | 31 | 0 |
| Feb | 27 | 8 | 100% | 28 | 0 |
| Mar | 36 | 18 | 100% | 27 | 5 |
| Apr | 49 | 31 | 100% | 17 | 28 |
| May | 64 | 44 | 70% | 2 | 177 |
| Jun | 71 | 53 | 0% | 0 | 368 |
| Jul | 75 | 58 | 0% | 0 | 510 |
| Aug | 74 | 56 | 0% | 0 | 462 |
| Sep | 67 | 49 | 19% | <1 | 249 |
| Oct | 54 | 37 | 97% | 10 | 51 |
| Nov | 40 | 27 | 100% | 21 | 4 |
| Dec | 29 | 15 | 100% | 29 | 0 |
Monthly normals 1991–2020 at Eden 2 S, VT (1,456 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, Johnson 2 N, VT, 5 miles northwest of Hyde Park and 476 feet lower, has a last frost 4 days later (May 9), a first frost 7 days earlier (October 1), a season 13 days shorter.
When it snows in Hyde Park, Vermont
The first measurable snow (0.1 inch or more) in Hyde Park usually arrives around October 23, and the last of the season around April 25. Those are the middle dates across the winters of 1991–2020 at Eden 2 S, VT, 4.7 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 10 days after the last snow.
Planting calendar for 05655
| When | What to do |
|---|---|
| February 24 – March 10 | Start peppers and aubergines indoorsThey need eight to ten weeks under lights before they can go out. |
| March 10 – March 24 | Start tomatoes indoorsSix to eight weeks gives a transplant big enough to set fruit early. |
| April 7 – April 21 | Sow peas, spinach, lettuce, radish outdoorsThese tolerate light frost and prefer to germinate in cool soil. |
| May 5 onward | Transplant tomatoes, peppers, basil, squash, cucumbersThe average last freeze has passed — still watch the actual forecast. |
| by July 16 | Sow the autumn crop of carrots, beets and brassicasThey need about twelve weeks to size up before growth stops. |
| by September 24 | Harvest tender crops, or be ready to cover themA first freeze two weeks early is well within normal variation. |
| October 8 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 05655 is 5 miles from Eden 2 S, VT, which stands at 1,456 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. The 2023 USDA Plant Hardiness Zone Map lists ZIP 05655 in zone 4b, the band where the coldest night of the year averaged -25 to -20°F (-31.7 to -28.9°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.