USDA Hardiness Zone 8b
Frost Dates for 36744 — Greensboro, Alabama
NOAA 1991–2020 normals from Greensboro 2 WNW, AL (280 ft), 2 miles northwest.
Updated
In Greensboro, the last spring frost (32°F) is around March 17 in half of years and has passed by April 6 in nine years out of ten. The first fall frost comes around November 11, as early as October 27 one year in ten, leaving a typical freeze-free season of 240 days (NOAA, Greensboro 2 WNW, AL).
- Last spring frost
- March 17
- First fall frost
- November 11
- Growing season
- 240 days
- Hardiness zone
- 8b
50% probability
50% probability
freeze-free, 50%
15 to 20°F (-9.4 to -6.7°C) coldest night
- First snow
- Rare
- Last snow
- Rare
- Winters with snow
- 5%
- Snow per year
- 0.2"
median, 1991–2020
median, 1991–2020
1 of 19 observed
NOAA normal
Frost risk by date in Greensboro
Half of springs at Greensboro 2 WNW, AL see their last 32°F night by March 17; only one in ten is past it by February 23, and one in ten still has one after April 6. Planting tender crops after March 26 leaves a 30% risk of a frost on them, after March 31 20%, and after April 6 10%. The 20 days between the even-odds date and the one-in-ten date is wider than at 70% of the 115 Alabama stations behind this site's ZIP pages.
In fall the first 32°F night comes by November 11 in half of years, as early as October 27 one year in ten, and holds off past December 3 one year in ten. A hard freeze of 28°F follows 14 days later, around November 25; in spring the one-in-ten date for 28°F is March 21, 16 days before the 32°F one. The freeze-free season lasts 240 days in a typical year, longer than at 64% of the 115 Alabama stations; it reaches 270 days one year in ten and falls short of 213 one year in ten. On average 44 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 17 days longer, to about April 3, and return around November 1. Nights of 24°F, cold enough to damage hardier plants, come in 98% of winters and 16°F in 52%.
| Low | 90% | 80% | 70% | 60% | 50% | 40% | 30% | 20% | 10% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Mar 14 | Mar 21 | Mar 26 | Mar 31 | Apr 3 | Apr 6 | Apr 9 | Apr 13 | Apr 20 |
| 32°F | Feb 23 | Mar 1 | Mar 8 | Mar 13 | Mar 17 | Mar 21 | Mar 26 | Mar 31 | Apr 6 |
| 28°F | Feb 3 | Feb 13 | Feb 21 | Feb 26 | Mar 1 | Mar 5 | Mar 10 | Mar 15 | Mar 21 |
| 24°F98% of yrs | Jan 16 | Jan 28 | Jan 31 | Feb 7 | Feb 14 | Feb 20 | Feb 27 | Mar 3 | Mar 10 |
| 20°F84% of yrs | Jan 4 | Jan 12 | Jan 19 | Jan 26 | Jan 31 | Feb 3 | Feb 9 | Feb 18 | Feb 28 |
| 16°F52% of yrs | Jan 1 | Jan 8 | Jan 13 | Jan 18 | Jan 24 | Jan 28 | Jan 31 | Feb 4 | Feb 15 |
| Low | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Oct 19 | Oct 23 | Oct 26 | Oct 29 | Nov 1 | Nov 3 | Nov 6 | Nov 10 | Nov 18 |
| 32°F | Oct 27 | Nov 1 | Nov 4 | Nov 8 | Nov 11 | Nov 15 | Nov 20 | Nov 26 | Dec 3 |
| 28°F | Nov 6 | Nov 11 | Nov 17 | Nov 20 | Nov 25 | Dec 1 | Dec 5 | Dec 9 | Dec 24 |
| 24°F98% of yrs | Nov 17 | Nov 26 | Dec 3 | Dec 7 | Dec 14 | Dec 23 | Jan 1 | Jan 6 | Jan 15 |
| 20°F84% of yrs | Dec 4 | Dec 15 | Dec 26 | Jan 1 | Jan 5 | Jan 9 | Jan 14 | Jan 20 | Feb 1 |
| 16°F52% of yrs | Dec 23 | Jan 1 | Jan 5 | Jan 8 | Jan 12 | Jan 16 | Jan 21 | Jan 28 | Feb 4 |
Freeze probabilities 1991–2020 at Greensboro 2 WNW, AL, 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 36744 →Compare Greensboro with another place →
Weather by month in Greensboro
July is the warmest month at Greensboro 2 WNW, AL, averaging 91°F by day and 71°F at night; January is the coldest at 56°F and 35°F. A freezing night is all but certain in every month from December to February (a 90% chance or more). From May to September the chance of a 32°F night stays under 10% each month. In spring, March still brings one in 79% of years and April still brings one in 19% of years.
Warmth for growing adds up to 5,754 growing degree days a year (base 50°F), more than at 59% of the 115 Alabama stations. 41% of them (2,338) have built up by the end of June, and July adds the most, 956. Precipitation totals 55.0 inches a year, most in June (5.8") and least in October (3.3"); May to September bring 39% of it.
| Month | High °F | Low °F | Precip. in | 32°F night | Nights ≤ 32°F | GDD 50°F |
|---|---|---|---|---|---|---|
| Jan | 56 | 35 | 5.0 | 100% | 16 | 80 |
| Feb | 61 | 39 | 5.5 | 96% | 9 | 115 |
| Mar | 68 | 45 | 5.6 | 79% | 4 | 248 |
| Apr | 75 | 52 | 4.7 | 19% | <1 | 407 |
| May | 82 | 60 | 3.9 | 0% | 0 | 659 |
| Jun | 88 | 68 | 5.8 | 0% | 0 | 829 |
| Jul | 91 | 71 | 4.1 | 0% | 0 | 956 |
| Aug | 91 | 70 | 4.0 | 0% | 0 | 945 |
| Sep | 86 | 65 | 3.8 | 0% | 0 | 760 |
| Oct | 77 | 53 | 3.3 | 18% | <1 | 463 |
| Nov | 66 | 43 | 4.1 | 83% | 6 | 184 |
| Dec | 59 | 39 | 5.2 | 97% | 10 | 107 |
Monthly normals 1991–2020 at Greensboro 2 WNW, AL (280 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, Greensboro, AL, 2 miles southeast of Greensboro, has a last frost 1 day later (March 18), a first frost 1 day later (November 12).
When it snows in Greensboro, Alabama
Measurable snow is rare here: only 1 of 19 winters from 1991 to 2020 recorded 0.1 inch or more at Greensboro, AL, 1.7 miles away, so there is no typical first-snow date to plan around.
Planting calendar for 36744
| When | What to do |
|---|---|
| January 6 – January 20 | Start peppers and aubergines indoorsThey need eight to ten weeks under lights before they can go out. |
| January 20 – February 3 | Start tomatoes indoorsSix to eight weeks gives a transplant big enough to set fruit early. |
| February 17 – March 3 | Sow peas, spinach, lettuce, radish outdoorsThese tolerate light frost and prefer to germinate in cool soil. |
| March 17 onward | Transplant tomatoes, peppers, basil, squash, cucumbersThe average last freeze has passed — still watch the actual forecast. |
| by August 19 | Sow the autumn crop of carrots, beets and brassicasThey need about twelve weeks to size up before growth stops. |
| by October 28 | Harvest tender crops, or be ready to cover themA first freeze two weeks early is well within normal variation. |
| November 11 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 36744 is 2 miles from Greensboro 2 WNW, AL, which stands at 280 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. 1 other ZIP code shares the station; its figures are presented in full for 35474 (Moundville). The 2023 USDA Plant Hardiness Zone Map lists ZIP 36744 in zone 8b, the band where the coldest night of the year averaged 15 to 20°F (-9.4 to -6.7°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.