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USDA Hardiness Zone 7b

Frost Dates for 79245 — Memphis, Texas

NOAA 1991–2020 normals from Memphis, TX (2,090 ft), under a mile north.

Updated

In Memphis, the last spring frost (32°F) is around April 1 in half of years and has passed by April 18 in nine years out of ten. The first fall frost comes around November 3, as early as October 21 one year in ten, leaving a typical freeze-free season of 215 days (NOAA, Memphis, TX).

Last spring frost
April 1

50% probability

First fall frost
November 3

50% probability

Growing season
215 days

freeze-free, 50%

Hardiness zone
7b

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

First snow
December 22

median, 1991–2020

Last snow
February 12

median, 1991–2020

Winters with snow
86%

24 of 28 observed

Snow per year
—

NOAA normal

Frost risk by date in Memphis

Half of springs at Memphis, TX see their last 32°F night by April 1; only one in ten is past it by March 13, and one in ten still has one after April 18. Planting tender crops after April 7 leaves a 30% risk of a frost on them, after April 12 20%, and after April 18 10%. The 17 days between the even-odds date and the one-in-ten date is narrower than at 86% of the 339 Texas stations behind this site's ZIP pages.

In fall the first 32°F night comes by November 3 in half of years, as early as October 21 one year in ten, and holds off past November 17 one year in ten. A hard freeze of 28°F follows 9 days later, around November 12; in spring the one-in-ten date for 28°F is April 6, 12 days before the 32°F one. The freeze-free season lasts 215 days in a typical year, shorter than at 89% of the 339 Texas stations; it reaches 237 days one year in ten and falls short of 194 one year in ten. On average 89 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 11, and return around October 26. Severe cold of 16°F or below comes in 98% of winters, usually between December 15 and February 11.

Spring: the chance of another night this cold after the date
Low90%80%70%60%50%40%30%20%10%
36°FMar 28Apr 2Apr 4Apr 8Apr 11Apr 14Apr 18Apr 22Apr 28
32°FMar 13Mar 19Mar 24Mar 30Apr 1Apr 4Apr 7Apr 12Apr 18
28°FMar 2Mar 6Mar 10Mar 13Mar 17Mar 22Mar 27Apr 1Apr 6
24°FFeb 19Feb 25Feb 28Mar 3Mar 7Mar 10Mar 14Mar 19Mar 25
20°FFeb 2Feb 12Feb 17Feb 22Feb 27Mar 1Mar 4Mar 9Mar 15
16°F98% of yrsJan 8Jan 22Jan 30Feb 4Feb 11Feb 15Feb 21Feb 28Mar 4
Fall: the chance the first night this cold has come by the date
Low10%20%30%40%50%60%70%80%90%
36°FOct 13Oct 18Oct 21Oct 23Oct 26Oct 28Oct 31Nov 3Nov 6
32°FOct 21Oct 26Oct 30Nov 1Nov 3Nov 6Nov 8Nov 12Nov 17
28°FOct 28Nov 2Nov 5Nov 9Nov 12Nov 16Nov 19Nov 23Nov 28
24°FNov 6Nov 12Nov 16Nov 19Nov 22Nov 25Nov 29Dec 3Dec 8
20°FNov 15Nov 21Nov 25Nov 29Dec 2Dec 6Dec 10Dec 15Dec 25
16°F98% of yrsNov 24Nov 30Dec 4Dec 9Dec 15Dec 20Dec 27Jan 4Jan 13

Freeze probabilities 1991–2020 at Memphis, TX, 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 79245 →Compare Memphis with another place →

Weather by month in Memphis

July is the warmest month at Memphis, TX, averaging 96°F by day and 70°F at night; January is the coldest at 53°F and 25°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 53% of years.

Warmth for growing adds up to 5,204 growing degree days a year (base 50°F), fewer than at 90% of the 351 Texas stations. 39% of them (2,010) have built up by the end of June, and July adds the most, 1,018. Precipitation totals 22.3 inches a year, most in May (3.5") and least in January (0.8"); May to September bring 61% of it.

Monthly normals 1991–2020 at Memphis, TX
MonthHigh °FLow °FPrecip. in32°F nightNights ≤ 32°FGDD 50°F
Jan53250.8100%2515
Feb57290.8100%1939
Mar67371.498%9153
Apr75462.053%2333
May83563.50%0609
Jun92662.90%0861
Jul96702.40%01018
Aug95682.50%0973
Sep87602.40%0702
Oct75471.835%1373
Nov64351.0100%11109
Dec54270.8100%2319

Monthly normals 1991–2020 at Memphis, TX (2,090 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, Wellington, TX, 21 miles northeast of Memphis, has the same 50% last-frost date, a first frost 1 day later (November 4).

Frost dates for 79095 (Wellington) →

When it snows in Memphis, Texas

The first measurable snow (0.1 inch or more) in Memphis usually arrives around December 22, and the last of the season around February 12. Those are the middle dates across the winters of 1991–2020 at Memphis, TX, 0.7 miles away: half of years saw snow earlier, half later. Snow fell in 86% of those winters. The last 32°F night of spring typically comes 48 days after the last snow.

Planting calendar for 79245

What to do and when, from the 50% frost dates for Memphis, Texas
WhenWhat to do
January 21 – February 4Start peppers and aubergines indoorsThey need eight to ten weeks under lights before they can go out.
February 4 – February 18Start tomatoes indoorsSix to eight weeks gives a transplant big enough to set fruit early.
March 4 – March 18Sow peas, spinach, lettuce, radish outdoorsThese tolerate light frost and prefer to germinate in cool soil.
April 1 onwardTransplant tomatoes, peppers, basil, squash, cucumbersThe average last freeze has passed — still watch the actual forecast.
by August 11Sow the autumn crop of carrots, beets and brassicasThey need about twelve weeks to size up before growth stops.
by October 20Harvest tender crops, or be ready to cover themA first freeze two weeks early is well within normal variation.
November 3 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 79245 is under a mile from Memphis, TX, which stands at 2,090 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. The 2023 USDA Plant Hardiness Zone Map lists ZIP 79245 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 Texas →

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 7b places in Texas