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USDA Hardiness Zone 7a

Frost Dates for 38562 — Gainesboro, Tennessee

NOAA 1991–2020 normals from Gainesboro, TN (487 ft), 1 miles north.

Updated

In Gainesboro, the last spring frost (32°F) is around April 20 in half of years and has passed by May 6 in nine years out of ten. The first fall frost comes around October 22, as early as October 8 one year in ten, leaving a typical freeze-free season of 183 days (NOAA, Gainesboro, TN).

Last spring frost
April 20

50% probability

First fall frost
October 22

50% probability

Growing season
183 days

freeze-free, 50%

Hardiness zone
7a

0 to 5°F (-17.8 to -15.0°C) coldest night

First snow
January 13

median, 1991–2020

Last snow
February 16

median, 1991–2020

Winters with snow
61%

14 of 23 observed

Snow per year
4.6"

NOAA normal

Frost risk by date in Gainesboro

Half of springs at Gainesboro, TN see their last 32°F night by April 20; only one in ten is past it by April 7, and one in ten still has one after May 6. Planting tender crops after April 27 leaves a 30% risk of a frost on them, after April 30 20%, and after May 6 10%. The 16 days between the even-odds date and the one-in-ten date is narrower than at 53% of the 144 Tennessee stations behind this site's ZIP pages.

In fall the first 32°F night comes by October 22 in half of years, as early as October 8 one year in ten, and holds off past November 3 one year in ten. A hard freeze of 28°F follows 8 days later, around October 30; in spring the one-in-ten date for 28°F is April 23, 13 days before the 32°F one. The freeze-free season lasts 183 days in a typical year, shorter than at 92% of the 144 Tennessee stations; it reaches 201 days one year in ten and falls short of 163 one year in ten. On average 104 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 10 days longer, to about April 30, and return around October 12. Severe cold of 16°F or below comes every winter, usually between December 3 and March 1.

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

Freeze probabilities 1991–2020 at Gainesboro, TN, 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 38562 →Compare Gainesboro with another place →

Weather by month in Gainesboro

July is the warmest month at Gainesboro, TN, averaging 90°F by day and 65°F at night; January is the coldest at 47°F and 24°F. A freezing night is all but certain in every month from November to April (a 90% chance or more). From June to September the chance of a 32°F night stays under 10% each month. In spring, May still brings one in 19% of years.

Warmth for growing adds up to 4,247 growing degree days a year (base 50°F), fewer than at 69% of the 144 Tennessee stations. 38% of them (1,605) have built up by the end of June, and July adds the most, 849. Precipitation totals 56.7 inches a year, most in December (5.8") and least in September (3.4"); May to September bring 41% of it.

Monthly normals 1991–2020 at Gainesboro, TN
MonthHigh °FLow °FPrecip. in32°F nightNights ≤ 32°FGDD 50°F
Jan47244.8100%2416
Feb53275.0100%2026
Mar62335.3100%1593
Apr73414.796%5254
May81525.519%<1500
Jun87605.50%0715
Jul90655.00%0849
Aug90634.10%0818
Sep84563.42%0593
Oct74433.785%3288
Nov61333.9100%1571
Dec51275.8100%2223

Monthly normals 1991–2020 at Gainesboro, TN (487 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, Carthage, TN, 18 miles southwest of Gainesboro, has a last frost 10 days earlier (April 10), a first frost 7 days later (October 29), a season 18 days longer.

Frost dates for 37030 (Carthage) →

When it snows in Gainesboro, Tennessee

The first measurable snow (0.1 inch or more) in Gainesboro usually arrives around January 13, and the last of the season around February 16. Those are the middle dates across the winters of 1991–2020 at Gainesboro, TN, 1 miles away: half of years saw snow earlier, half later. Snow fell in 61% of those winters. The last 32°F night of spring typically comes 63 days after the last snow.

Planting calendar for 38562

What to do and when, from the 50% frost dates for Gainesboro, Tennessee
WhenWhat to do
February 9 – February 23Start peppers and aubergines indoorsThey need eight to ten weeks under lights before they can go out.
February 23 – March 9Start tomatoes indoorsSix to eight weeks gives a transplant big enough to set fruit early.
March 23 – April 6Sow peas, spinach, lettuce, radish outdoorsThese tolerate light frost and prefer to germinate in cool soil.
April 20 onwardTransplant tomatoes, peppers, basil, squash, cucumbersThe average last freeze has passed — still watch the actual forecast.
by July 30Sow the autumn crop of carrots, beets and brassicasThey need about twelve weeks to size up before growth stops.
by October 8Harvest tender crops, or be ready to cover themA first freeze two weeks early is well within normal variation.
October 22 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 38562 is 1 mile from Gainesboro, TN, which stands at 487 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. The 2023 USDA Plant Hardiness Zone Map lists ZIP 38562 in zone 7a, the band where the coldest night of the year averaged 0 to 5°F (-17.8 to -15.0°C) over 1991–2020; a zone describes winter lows, not frost dates.

Frost dates across Tennessee →

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 7a places in Tennessee