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USDA Hardiness Zone 8b

Frost Dates for 36784 — Thomasville, Alabama

NOAA 1991–2020 normals from Thomasville, AL (390 ft), 3 miles southeast.

Updated

In Thomasville, the last spring frost (32°F) is around March 10 in half of years and has passed by March 29 in nine years out of ten. The first fall frost comes around November 21, as early as November 5 one year in ten, leaving a typical freeze-free season of 257 days (NOAA, Thomasville, AL).

Last spring frost
March 10

50% probability

First fall frost
November 21

50% probability

Growing season
257 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
5%

1 of 19 observed

Snow per year
0.1"

NOAA normal

Frost risk by date in Thomasville

Half of springs at Thomasville, AL see their last 32°F night by March 10; only one in ten is past it by February 18, and one in ten still has one after March 29. Planting tender crops after March 17 leaves a 30% risk of a frost on them, after March 22 20%, and after March 29 10%. The 19 days between the even-odds date and the one-in-ten date is wider than at 55% of the 115 Alabama stations behind this site's ZIP pages.

In fall the first 32°F night comes by November 21 in half of years, as early as November 5 one year in ten, and holds off past December 10 one year in ten. A hard freeze of 28°F follows 13 days later, around December 4; in spring the one-in-ten date for 28°F is March 17, 12 days before the 32°F one. The freeze-free season lasts 257 days in a typical year, longer than at 86% of the 115 Alabama stations; it reaches 286 days one year in ten and falls short of 233 one year in ten. On average 41 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 14 days longer, to about March 24, and return around November 8. Nights of 24°F, cold enough to damage hardier plants, come in 94% of winters and 16°F in 31%.

Spring: the chance of another night this cold after the date
Low90%80%70%60%50%40%30%20%10%
36°FMar 2Mar 11Mar 15Mar 19Mar 24Mar 28Apr 1Apr 5Apr 10
32°FFeb 18Feb 25Feb 28Mar 5Mar 10Mar 13Mar 17Mar 22Mar 29
28°FJan 31Feb 9Feb 16Feb 20Feb 25Feb 28Mar 5Mar 10Mar 17
24°F94% of yrsJan 6Jan 20Jan 29Feb 1Feb 6Feb 13Feb 19Feb 27Mar 6
20°F68% of yrsDec 27Jan 5Jan 14Jan 21Jan 27Jan 31Feb 4Feb 10Feb 22
16°F31% of yrstoo rare for a date
Fall: the chance the first night this cold has come by the date
Low10%20%30%40%50%60%70%80%90%
36°FOct 27Nov 1Nov 3Nov 5Nov 8Nov 12Nov 15Nov 20Nov 25
32°FNov 5Nov 9Nov 14Nov 17Nov 21Nov 25Nov 30Dec 3Dec 10
28°FNov 14Nov 20Nov 27Dec 1Dec 4Dec 9Dec 17Dec 27Jan 5
24°F94% of yrsNov 29Dec 4Dec 10Dec 20Dec 27Jan 1Jan 6Jan 13Jan 25
20°F68% of yrsDec 10Dec 21Dec 30Jan 2Jan 7Jan 13Jan 19Jan 27Feb 5
16°F31% of yrstoo rare for a date

Freeze probabilities 1991–2020 at Thomasville, 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 36784 →Compare Thomasville with another place →

Weather by month in Thomasville

July is the warmest month at Thomasville, AL, averaging 92°F by day and 72°F at night; January is the coldest at 59°F and 37°F. A freezing night is all but certain in every month from December to February (a 90% chance or more). From April to October the chance of a 32°F night stays under 10% each month. In spring, March still brings one in 68% of years.

Warmth for growing adds up to 6,223 growing degree days a year (base 50°F), more than at 81% of the 115 Alabama stations. 42% of them (2,588) have built up by the end of June, and July adds the most, 978. Precipitation totals 57.7 inches a year, most in July (6.0") and least in April (4.0"); May to September bring 41% of it.

Monthly normals 1991–2020 at Thomasville, AL
MonthHigh °FLow °FPrecip. in32°F nightNights ≤ 32°FGDD 50°F
Jan59375.5100%1394
Feb63404.695%9133
Mar71475.768%3299
Apr78534.07%0461
May85624.10%0724
Jun90694.60%0877
Jul92726.00%0978
Aug92714.80%0969
Sep88664.30%0810
Oct79554.03%0526
Nov69454.869%4237
Dec61395.393%12116

Monthly normals 1991–2020 at Thomasville, AL (390 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, Whatley, AL, 20 miles south of Thomasville and 220 feet lower, has a last frost 12 days later (March 22), a first frost 13 days earlier (November 8), a season 26 days shorter.

Frost dates for 36451 (Grove Hill) →

When it snows in Thomasville, Alabama

Measurable snow is rare here: only 1 of 19 winters from 1991 to 2020 recorded 0.1 inch or more at Thomasville, AL, 2.5 miles away, so there is no typical first-snow date to plan around.

Planting calendar for 36784

What to do and when, from the 50% frost dates for Thomasville, Alabama
WhenWhat to do
December 30 – January 13Start peppers and aubergines indoorsThey need eight to ten weeks under lights before they can go out.
January 13 – January 27Start tomatoes indoorsSix to eight weeks gives a transplant big enough to set fruit early.
February 10 – February 24Sow peas, spinach, lettuce, radish outdoorsThese tolerate light frost and prefer to germinate in cool soil.
March 10 onwardTransplant tomatoes, peppers, basil, squash, cucumbersThe average last freeze has passed — still watch the actual forecast.
by August 29Sow the autumn crop of carrots, beets and brassicasThey need about twelve weeks to size up before growth stops.
by November 7Harvest tender crops, or be ready to cover themA first freeze two weeks early is well within normal variation.
November 21 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 36784 is 3 miles from Thomasville, AL, which stands at 390 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. 1 other ZIP code shares the station. The 2023 USDA Plant Hardiness Zone Map lists ZIP 36784 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.

ZIP codes measured at the same station

Other zone 8b places in Alabama