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USDA Hardiness Zone 8b

Frost Dates for 36786 — Uniontown, Alabama

NOAA 1991–2020 normals from Selma 13 WNW, AL (193 ft), 15 miles east.

Updated

In Uniontown, the last spring frost (32°F) is around March 21 in half of years and has passed by April 12 in nine years out of ten. The first fall frost comes around November 5, as early as October 24 one year in ten, leaving a typical freeze-free season of 229 days (NOAA, Selma 13 WNW, AL).

Last spring frost
March 21

50% probability

First fall frost
November 5

50% probability

Growing season
229 days

freeze-free, 50%

Hardiness zone
8b

15 to 20°F (-9.4 to -6.7°C) coldest night

First snow
Rare

median, 1991–2020

Last snow
Rare

median, 1991–2020

Winters with snow
10%

2 of 20 observed

Snow per year
0.2"

NOAA normal

Frost risk by date in Uniontown

Half of springs at Selma 13 WNW, AL see their last 32°F night by March 21; only one in ten is past it by February 26, and one in ten still has one after April 12. Planting tender crops after March 30 leaves a 30% risk of a frost on them, after April 4 20%, and after April 12 10%. The 22 days between the even-odds date and the one-in-ten date is wider than at 95% of the 115 Alabama stations behind this site's ZIP pages, so a fixed calendar date is a gamble here.

In fall the first 32°F night comes by November 5 in half of years, as early as October 24 one year in ten, and holds off past November 21 one year in ten. A hard freeze of 28°F follows 10 days later, around November 15; in spring the one-in-ten date for 28°F is March 25, 18 days before the 32°F one. The freeze-free season lasts 229 days in a typical year, shorter than at 56% of the 115 Alabama stations; it reaches 256 days one year in ten and falls short of 205 one year in ten. On average 55 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 15 days longer, to about April 5, and return around October 28. Nights of 24°F, cold enough to damage hardier plants, come in 100% of winters and 16°F in 67%.

Spring: the chance of another night this cold after the date
Low90%80%70%60%50%40%30%20%10%
36°FMar 15Mar 23Mar 28Apr 1Apr 5Apr 9Apr 13Apr 16Apr 23
32°FFeb 26Mar 6Mar 12Mar 17Mar 21Mar 26Mar 30Apr 4Apr 12
28°FFeb 8Feb 17Feb 23Feb 28Mar 3Mar 8Mar 13Mar 17Mar 25
24°FJan 17Jan 29Feb 2Feb 9Feb 16Feb 22Feb 28Mar 5Mar 13
20°F93% of yrsDec 30Jan 10Jan 19Jan 26Jan 31Feb 3Feb 10Feb 18Feb 28
16°F67% of yrsDec 22Jan 1Jan 6Jan 13Jan 19Jan 25Jan 30Feb 4Feb 12
Fall: the chance the first night this cold has come by the date
Low10%20%30%40%50%60%70%80%90%
36°FOct 16Oct 20Oct 23Oct 25Oct 28Oct 31Nov 2Nov 5Nov 9
32°FOct 24Oct 28Nov 1Nov 3Nov 5Nov 8Nov 11Nov 15Nov 21
28°FNov 1Nov 5Nov 8Nov 12Nov 15Nov 19Nov 23Nov 28Dec 4
24°FNov 11Nov 16Nov 21Nov 25Nov 30Dec 4Dec 9Dec 20Jan 1
20°F93% of yrsNov 18Nov 27Dec 2Dec 7Dec 14Dec 27Jan 2Jan 8Jan 20
16°F67% of yrsDec 1Dec 8Dec 19Dec 29Jan 2Jan 7Jan 12Jan 20Jan 31

Freeze probabilities 1991–2020 at Selma 13 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 36786 →Compare Uniontown with another place →

Weather by month in Uniontown

July is the warmest month at Selma 13 WNW, AL, averaging 91°F by day and 70°F at night; January is the coldest at 57°F and 34°F. A freezing night is all but certain in every month from November 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 82% of years and April still brings one in 27% of years.

Warmth for growing adds up to 5,593 growing degree days a year (base 50°F), more than at 53% of the 115 Alabama stations. 40% of them (2,260) have built up by the end of June, and July adds the most, 955. Precipitation totals 55.4 inches a year, most in February (5.8") and least in October (3.2"); May to September bring 38% of it.

Monthly normals 1991–2020 at Selma 13 WNW, AL
MonthHigh °FLow °FPrecip. in32°F nightNights ≤ 32°FGDD 50°F
Jan57345.4100%1673
Feb62385.895%11111
Mar68445.482%4234
Apr76504.827%<1386
May83583.70%0632
Jun88674.60%0823
Jul91704.40%0955
Aug91694.60%0930
Sep87633.90%0750
Oct78513.230%1447
Nov67404.296%9158
Dec59365.499%1493

Monthly normals 1991–2020 at Selma 13 WNW, AL (193 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, 18 miles north of Uniontown, has a last frost 3 days earlier (March 18), a first frost 7 days later (November 12), a season 11 days longer.

Frost dates for 36756 (Marion) →

When it snows in Uniontown, Alabama

Measurable snow is rare here: only 2 of 20 winters from 1991 to 2020 recorded 0.1 inch or more at Marion Junction 2 NE, AL, 15.6 miles away, so there is no typical first-snow date to plan around.

Planting calendar for 36786

What to do and when, from the 50% frost dates for Uniontown, Alabama
WhenWhat to do
January 10 – January 24Start peppers and aubergines indoorsThey need eight to ten weeks under lights before they can go out.
January 24 – February 7Start tomatoes indoorsSix to eight weeks gives a transplant big enough to set fruit early.
February 21 – March 7Sow peas, spinach, lettuce, radish outdoorsThese tolerate light frost and prefer to germinate in cool soil.
March 21 onwardTransplant tomatoes, peppers, basil, squash, cucumbersThe average last freeze has passed — still watch the actual forecast.
by August 13Sow the autumn crop of carrots, beets and brassicasThey need about twelve weeks to size up before growth stops.
by October 22Harvest tender crops, or be ready to cover themA first freeze two weeks early is well within normal variation.
November 5 onwardPlant 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 36786 is 15 miles from Selma 13 WNW, AL, which stands at 193 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. The 2023 USDA Plant Hardiness Zone Map lists ZIP 36786 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.

Frost dates across Alabama →

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.

Other zone 8b places in Alabama