USDA Hardiness Zone 7a
Frost Dates for 72631 — Holiday Island, Arkansas
NOAA 1991–2020 normals from Seligman, MO (1,530 ft), 11 miles northwest.
Updated
In Holiday Island, the last spring frost (32°F) is around April 18 in half of years and has passed by May 3 in nine years out of ten. The first fall frost comes around October 22, as early as October 7 one year in ten, leaving a typical freeze-free season of 185 days (NOAA, Seligman, MO).
- Last spring frost
- April 18
- First fall frost
- October 22
- Growing season
- 185 days
- Hardiness zone
- 7a
50% probability
50% probability
freeze-free, 50%
0 to 5°F (-17.8 to -15.0°C) coldest night
- First snow
- December 18
- Last snow
- March 6
- Winters with snow
- 100%
- Snow per year
- —
median, 1991–2020
median, 1991–2020
20 of 20 observed
NOAA normal
Frost risk by date in Holiday Island
Half of springs at Seligman, MO see their last 32°F night by April 18; only one in ten is past it by April 1, and one in ten still has one after May 3. Planting tender crops after April 26 leaves a 30% risk of a frost on them, after April 30 20%, and after May 3 10%. The 15 days between the even-odds date and the one-in-ten date is narrower than at 86% of the 105 Arkansas stations behind this site's ZIP pages.
In fall the first 32°F night comes by October 22 in half of years, as early as October 7 one year in ten, and holds off past November 3 one year in ten. A hard freeze of 28°F follows 10 days later, around November 1; in spring the one-in-ten date for 28°F is April 23, 10 days before the 32°F one. The freeze-free season lasts 185 days in a typical year, the shortest of the 105 Arkansas stations; it reaches 208 days one year in ten and falls short of 165 one year in ten. On average 110 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 12 days longer, to about April 30, and return around October 10. Severe cold of 16°F or below comes every winter, usually between December 1 and March 2.
| Low | 90% | 80% | 70% | 60% | 50% | 40% | 30% | 20% | 10% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Apr 13 | Apr 18 | Apr 22 | Apr 27 | Apr 30 | May 2 | May 4 | May 8 | May 12 |
| 32°F | Apr 1 | Apr 6 | Apr 11 | Apr 14 | Apr 18 | Apr 22 | Apr 26 | Apr 30 | May 3 |
| 28°F | Mar 19 | Mar 26 | Mar 31 | Apr 3 | Apr 6 | Apr 9 | Apr 13 | Apr 18 | Apr 23 |
| 24°F | Mar 4 | Mar 12 | Mar 17 | Mar 21 | Mar 26 | Mar 30 | Apr 3 | Apr 7 | Apr 12 |
| 20°F | Feb 21 | Mar 1 | Mar 5 | Mar 9 | Mar 13 | Mar 17 | Mar 22 | Mar 27 | Apr 3 |
| 16°F | Feb 5 | Feb 15 | Feb 21 | Feb 27 | Mar 2 | Mar 5 | Mar 9 | Mar 14 | Mar 21 |
| Low | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Sep 26 | Oct 1 | Oct 4 | Oct 7 | Oct 10 | Oct 13 | Oct 17 | Oct 20 | Oct 25 |
| 32°F | Oct 7 | Oct 13 | Oct 17 | Oct 20 | Oct 22 | Oct 25 | Oct 27 | Oct 30 | Nov 3 |
| 28°F | Oct 18 | Oct 23 | Oct 26 | Oct 29 | Nov 1 | Nov 3 | Nov 5 | Nov 9 | Nov 14 |
| 24°F | Oct 27 | Nov 1 | Nov 3 | Nov 6 | Nov 9 | Nov 12 | Nov 16 | Nov 22 | Nov 27 |
| 20°F | Nov 2 | Nov 8 | Nov 12 | Nov 16 | Nov 21 | Nov 25 | Nov 29 | Dec 4 | Dec 11 |
| 16°F | Nov 10 | Nov 18 | Nov 23 | Nov 28 | Dec 1 | Dec 5 | Dec 11 | Dec 17 | Dec 24 |
Freeze probabilities 1991–2020 at Seligman, MO, 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 72631 →Compare Holiday Island with another place →
Weather by month in Holiday Island
July is the warmest month at Seligman, MO, averaging 88°F by day and 65°F at night; January is the coldest at 45°F and 23°F. A freezing night is all but certain in every month from November to March (a 90% chance or more). From June to September the chance of a 32°F night stays under 10% each month. In spring, April still brings one in 89% of years and May still brings one in 17% of years.
Warmth for growing adds up to 3,915 growing degree days a year (base 50°F), fewer than at 99% of the 105 Arkansas stations. 36% of them (1,393) have built up by the end of June, and July adds the most, 827.
| Month | High °F | Low °F | 32°F night | Nights ≤ 32°F | GDD 50°F |
|---|---|---|---|---|---|
| Jan | 45 | 23 | 100% | 25 | 12 |
| Feb | 50 | 26 | 100% | 21 | 18 |
| Mar | 58 | 34 | 100% | 16 | 73 |
| Apr | 68 | 42 | 89% | 6 | 209 |
| May | 76 | 52 | 17% | <1 | 429 |
| Jun | 83 | 60 | 0% | 0 | 651 |
| Jul | 88 | 65 | 0% | 0 | 827 |
| Aug | 88 | 64 | 0% | 0 | 804 |
| Sep | 81 | 55 | 4% | <1 | 547 |
| Oct | 71 | 44 | 83% | 4 | 263 |
| Nov | 58 | 33 | 100% | 14 | 66 |
| Dec | 48 | 26 | 100% | 24 | 15 |
Monthly normals 1991–2020 at Seligman, MO (1,530 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, Cassville, MO, 18 miles north of Holiday Island and 154 feet lower, has a last frost 4 days earlier (April 14), a first frost 4 days later (October 26), a season 9 days longer.
When it snows in Holiday Island, Arkansas
The first measurable snow (0.1 inch or more) in Holiday Island usually arrives around December 18, and the last of the season around March 6. Those are the middle dates across the winters of 1991–2020 at Huntsville 1 SSW, AR, 25.8 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 43 days after the last snow.
Planting calendar for 72631
| When | What to do |
|---|---|
| February 7 – February 21 | Start peppers and aubergines indoorsThey need eight to ten weeks under lights before they can go out. |
| February 21 – March 7 | Start tomatoes indoorsSix to eight weeks gives a transplant big enough to set fruit early. |
| March 21 – April 4 | Sow peas, spinach, lettuce, radish outdoorsThese tolerate light frost and prefer to germinate in cool soil. |
| April 18 onward | Transplant tomatoes, peppers, basil, squash, cucumbersThe average last freeze has passed — still watch the actual forecast. |
| by July 30 | Sow the autumn crop of carrots, beets and brassicasThey need about twelve weeks to size up before growth stops. |
| by October 8 | Harvest tender crops, or be ready to cover themA first freeze two weeks early is well within normal variation. |
| October 22 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 72631 is 11 miles from Seligman, MO, which stands at 1,530 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. 3 other ZIP codes share the station; its figures are presented in full for 72732 (Garfield). The 2023 USDA Plant Hardiness Zone Map lists ZIP 72631 in zone 7a, the band where the coldest night of the year averaged 0 to 5°F (-17.8 to -15.0°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.