Skip to content

USDA Hardiness Zone 7b

Frost Dates for 35563 — Guin, Alabama

NOAA 1991–2020 normals from Winfield 2 SW, AL (520 ft), 5 miles southeast.

Updated

In Guin, the last spring frost (32°F) is around April 4 in half of years and has passed by April 22 in nine years out of ten. The first fall frost comes around November 1, as early as October 19 one year in ten, leaving a typical freeze-free season of 211 days (NOAA, Winfield 2 SW, AL).

Last spring frost
April 4

50% probability

First fall frost
November 1

50% probability

Growing season
211 days

freeze-free, 50%

Hardiness zone
7b

5 to 10°F (-15.0 to -12.2°C) coldest night

First snow
Rare

median, 1991–2020

Last snow
Rare

median, 1991–2020

Winters with snow
45%

9 of 20 observed

Snow per year
0.9"

NOAA normal

Frost risk by date in Guin

Half of springs at Winfield 2 SW, AL see their last 32°F night by April 4; only one in ten is past it by March 14, and one in ten still has one after April 22. Planting tender crops after April 10 leaves a 30% risk of a frost on them, after April 15 20%, and after April 22 10%. The 18 days between the even-odds date and the one-in-ten date is narrower than at 46% of the 115 Alabama stations behind this site's ZIP pages.

In fall the first 32°F night comes by November 1 in half of years, as early as October 19 one year in ten, and holds off past November 19 one year in ten. A hard freeze of 28°F follows 10 days later, around November 11; in spring the one-in-ten date for 28°F is April 9, 13 days before the 32°F one. The freeze-free season lasts 211 days in a typical year, shorter than at 83% of the 115 Alabama stations; it reaches 237 days one year in ten and falls short of 189 one year in ten. On average 81 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 16, and return around October 24. Severe cold of 16°F or below comes in 90% of winters, usually between January 1 and February 2.

Spring: the chance of another night this cold after the date
Low90%80%70%60%50%40%30%20%10%
36°FMar 31Apr 5Apr 9Apr 13Apr 16Apr 19Apr 23Apr 28May 2
32°FMar 14Mar 21Mar 28Mar 31Apr 4Apr 7Apr 10Apr 15Apr 22
28°FFeb 27Mar 6Mar 12Mar 16Mar 20Mar 25Mar 30Apr 3Apr 9
24°FFeb 10Feb 21Feb 26Feb 28Mar 4Mar 9Mar 14Mar 18Mar 25
20°F99% of yrsJan 23Jan 31Feb 7Feb 14Feb 20Feb 25Feb 28Mar 6Mar 14
16°F90% of yrsJan 5Jan 17Jan 24Jan 30Feb 2Feb 7Feb 15Feb 25Mar 3
Fall: the chance the first night this cold has come by the date
Low10%20%30%40%50%60%70%80%90%
36°FOct 12Oct 15Oct 19Oct 21Oct 24Oct 27Oct 30Nov 1Nov 6
32°FOct 19Oct 24Oct 27Oct 30Nov 1Nov 4Nov 7Nov 11Nov 19
28°FOct 29Nov 1Nov 4Nov 8Nov 11Nov 15Nov 19Nov 25Dec 1
24°FNov 7Nov 13Nov 18Nov 22Nov 27Dec 1Dec 3Dec 9Dec 21
20°F99% of yrsNov 19Nov 29Dec 1Dec 6Dec 11Dec 20Dec 27Jan 2Jan 10
16°F90% of yrsDec 3Dec 13Dec 23Dec 29Jan 1Jan 4Jan 10Jan 18Feb 1

Freeze probabilities 1991–2020 at Winfield 2 SW, 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 35563 →Compare Guin with another place →

Weather by month in Guin

July is the warmest month at Winfield 2 SW, AL, averaging 89°F by day and 69°F at night; January is the coldest at 52°F and 30°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 59% of years.

Warmth for growing adds up to 4,962 growing degree days a year (base 50°F), fewer than at 81% of the 115 Alabama stations. 39% of them (1,918) have built up by the end of June, and July adds the most, 905. Precipitation totals 64.2 inches a year, most in December (6.5") and least in September (3.8"); May to September bring 38% of it.

Monthly normals 1991–2020 at Winfield 2 SW, AL
MonthHigh °FLow °FPrecip. in32°F nightNights ≤ 32°FGDD 50°F
Jan52306.1100%2038
Feb57336.3100%1753
Mar65405.795%10159
Apr73476.259%3316
May80575.42%0572
Jun87655.40%0780
Jul89695.30%0905
Aug89684.40%0887
Sep85623.80%0694
Oct75494.245%2381
Nov64394.996%12127
Dec55336.5100%1851

Monthly normals 1991–2020 at Winfield 2 SW, AL (520 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, Hamilton 3 S, AL, 10 miles northwest of Guin, has a last frost 7 days later (April 11), a first frost 5 days earlier (October 27), a season 13 days shorter.

Frost dates for 35570 (Hamilton) →

When it snows in Guin, Alabama

Measurable snow is rare here: only 9 of 20 winters from 1991 to 2020 recorded 0.1 inch or more at Winfield 2 SW, AL, 5.3 miles away, so there is no typical first-snow date to plan around.

Planting calendar for 35563

What to do and when, from the 50% frost dates for Guin, Alabama
WhenWhat to do
January 24 – February 7Start peppers and aubergines indoorsThey need eight to ten weeks under lights before they can go out.
February 7 – February 21Start tomatoes indoorsSix to eight weeks gives a transplant big enough to set fruit early.
March 7 – March 21Sow peas, spinach, lettuce, radish outdoorsThese tolerate light frost and prefer to germinate in cool soil.
April 4 onwardTransplant tomatoes, peppers, basil, squash, cucumbersThe average last freeze has passed — still watch the actual forecast.
by August 9Sow the autumn crop of carrots, beets and brassicasThey need about twelve weeks to size up before growth stops.
by October 18Harvest tender crops, or be ready to cover themA first freeze two weeks early is well within normal variation.
November 1 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 35563 is 5 miles from Winfield 2 SW, AL, which stands at 520 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 35594 (Winfield). The 2023 USDA Plant Hardiness Zone Map lists ZIP 35563 in zone 7b, the band where the coldest night of the year averaged 5 to 10°F (-15.0 to -12.2°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 7b places in Alabama