USDA Hardiness Zone 8a
Frost Dates for 72205 — Little Rock, Arkansas
NOAA 1991–2020 normals from Little Rock Airport Adams Field, AR (258 ft), 6 miles east.
Updated
In Little Rock, the last spring frost (32°F) is around March 21 in half of years and has passed by April 6 in nine years out of ten. The first fall frost comes around November 10, as early as October 29 one year in ten, leaving a typical freeze-free season of 234 days (NOAA, Little Rock Airport Adams Field, AR).
- Last spring frost
- March 21
- First fall frost
- November 10
- Growing season
- 234 days
- Hardiness zone
- 8a
50% probability
50% probability
freeze-free, 50%
10 to 15°F (-12.2 to -9.4°C) coldest night
- First snow
- Rare
- Last snow
- Rare
- Winters with snow
- 33%
- Snow per year
- 1.1"
median, 1991–2020
median, 1991–2020
9 of 27 observed
NOAA normal
Frost risk by date in Little Rock
Half of springs at Little Rock Airport Adams Field, AR see their last 32°F night by March 21; only one in ten is past it by March 2, and one in ten still has one after April 6. Planting tender crops after March 28 leaves a 30% risk of a frost on them, after April 1 20%, and after April 6 10%. The 16 days between the even-odds date and the one-in-ten date is narrower than at 65% of the 105 Arkansas 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 29 one year in ten, and holds off past November 25 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 March 26, 11 days before the 32°F one. The freeze-free season lasts 234 days in a typical year, longer than at 73% of the 105 Arkansas stations; it reaches 257 days one year in ten and falls short of 210 one year in ten. On average 50 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 3, and return around October 31. Nights of 24°F, cold enough to damage hardier plants, come in 100% of winters and 16°F in 81%.
| Low | 90% | 80% | 70% | 60% | 50% | 40% | 30% | 20% | 10% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Mar 16 | Mar 23 | Mar 27 | Mar 31 | Apr 3 | Apr 6 | Apr 9 | Apr 13 | Apr 21 |
| 32°F | Mar 2 | Mar 8 | Mar 13 | Mar 16 | Mar 21 | Mar 25 | Mar 28 | Apr 1 | Apr 6 |
| 28°F | Feb 20 | Feb 26 | Mar 1 | Mar 4 | Mar 8 | Mar 12 | Mar 15 | Mar 19 | Mar 26 |
| 24°F | Feb 1 | Feb 12 | Feb 18 | Feb 22 | Feb 26 | Mar 1 | Mar 5 | Mar 10 | Mar 15 |
| 20°F98% of yrs | Jan 14 | Jan 24 | Jan 30 | Feb 4 | Feb 10 | Feb 15 | Feb 21 | Feb 28 | Mar 7 |
| 16°F81% of yrs | Dec 30 | Jan 6 | Jan 14 | Jan 21 | Jan 27 | Jan 31 | Feb 4 | Feb 10 | Feb 22 |
| Low | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Oct 20 | Oct 23 | Oct 26 | Oct 29 | Oct 31 | Nov 2 | Nov 5 | Nov 8 | Nov 14 |
| 32°F | Oct 29 | Nov 1 | Nov 4 | Nov 7 | Nov 10 | Nov 13 | Nov 17 | Nov 20 | Nov 25 |
| 28°F | Nov 6 | Nov 10 | Nov 15 | Nov 18 | Nov 21 | Nov 24 | Nov 28 | Dec 2 | Dec 8 |
| 24°F | Nov 15 | Nov 21 | Nov 26 | Nov 30 | Dec 3 | Dec 7 | Dec 12 | Dec 19 | Dec 27 |
| 20°F98% of yrs | Nov 29 | Dec 5 | Dec 11 | Dec 17 | Dec 22 | Dec 28 | Jan 1 | Jan 6 | Jan 16 |
| 16°F81% of yrs | Dec 10 | Dec 19 | Dec 27 | Jan 1 | Jan 3 | Jan 8 | Jan 15 | Jan 21 | Feb 2 |
Freeze probabilities 1991–2020 at Little Rock Airport Adams Field, AR, 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 72205 →Compare Little Rock with another place →
Weather by month in Little Rock
July is the warmest month at Little Rock Airport Adams Field, AR, averaging 92°F by day and 71°F at night; January is the coldest at 51°F and 31°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 22% of years.
Warmth for growing adds up to 5,263 growing degree days a year (base 50°F), more than at 63% of the 105 Arkansas stations. 39% of them (2,052) have built up by the end of June, and July adds the most, 975. Precipitation totals 50.6 inches a year, most in April (5.6") and least in September (3.0"); May to September bring 36% of it.
| Month | High °F | Low °F | Precip. in | 32°F night | Nights ≤ 32°F | GDD 50°F |
|---|---|---|---|---|---|---|
| Jan | 51 | 31 | 3.5 | 100% | 17 | 29 |
| Feb | 55 | 34 | 4.0 | 100% | 11 | 51 |
| Mar | 64 | 42 | 5.0 | 91% | 4 | 164 |
| Apr | 73 | 50 | 5.6 | 22% | <1 | 352 |
| May | 81 | 59 | 5.1 | 0% | 0 | 617 |
| Jun | 88 | 68 | 3.6 | 0% | 0 | 838 |
| Jul | 92 | 71 | 3.3 | 0% | 0 | 975 |
| Aug | 92 | 70 | 3.2 | 0% | 0 | 955 |
| Sep | 85 | 63 | 3.0 | 0% | 0 | 720 |
| Oct | 74 | 51 | 4.5 | 18% | <1 | 397 |
| Nov | 62 | 40 | 4.7 | 95% | 5 | 125 |
| Dec | 53 | 33 | 5.1 | 100% | 13 | 41 |
Monthly normals 1991–2020 at Little Rock Airport Adams Field, AR (258 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, Little Rock, AR, 7 miles northeast of Little Rock and 310 feet higher, has a last frost 5 days earlier (March 16), a first frost 6 days later (November 16), a season 11 days longer.
When it snows in Little Rock, Arkansas
Measurable snow is rare here: only 9 of 27 winters from 1991 to 2020 recorded 0.1 inch or more at Lake Maumelle, AR, 11.1 miles away, so there is no typical first-snow date to plan around.
Planting calendar for 72205
| When | What to do |
|---|---|
| January 10 – January 24 | Start peppers and aubergines indoorsThey need eight to ten weeks under lights before they can go out. |
| January 24 – February 7 | Start tomatoes indoorsSix to eight weeks gives a transplant big enough to set fruit early. |
| February 21 – March 7 | Sow peas, spinach, lettuce, radish outdoorsThese tolerate light frost and prefer to germinate in cool soil. |
| March 21 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 72205 is 6 miles from Little Rock Airport Adams Field, AR, which stands at 258 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. 8 other ZIP codes share the station; its figures are presented in full for 72209 (Little Rock). The 2023 USDA Plant Hardiness Zone Map lists ZIP 72205 in zone 8a, the band where the coldest night of the year averaged 10 to 15°F (-12.2 to -9.4°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.