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USDA Hardiness Zone 8b

Frost Dates for 79761 — Odessa, Texas

NOAA 1991–2020 normals from Odessa, TX (2,910 ft), 2 miles north.

Updated

In Odessa, the last spring frost (32°F) is around March 15 in half of years and has passed by April 9 in nine years out of ten. The first fall frost comes around November 16, as early as November 1 one year in ten, leaving a typical freeze-free season of 243 days (NOAA, Odessa, TX).

Last spring frost
March 15

50% probability

First fall frost
November 16

50% probability

Growing season
243 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
19%

5 of 27 observed

Snow per year
0.9"

NOAA normal

Frost risk by date in Odessa

Half of springs at Odessa, TX see their last 32°F night by March 15; only one in ten is past it by February 25, and one in ten still has one after April 9. Planting tender crops after March 27 leaves a 30% risk of a frost on them, after April 1 20%, and after April 9 10%. The 25 days between the even-odds date and the one-in-ten date is wider than at 82% of the 339 Texas 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 16 in half of years, as early as November 1 one year in ten, and holds off past December 1 one year in ten. A hard freeze of 28°F follows 10 days later, around November 26; in spring the one-in-ten date for 28°F is March 27, 13 days before the 32°F one. The freeze-free season lasts 243 days in a typical year, shorter than at 56% of the 339 Texas stations; it reaches 268 days one year in ten and falls short of 216 one year in ten. On average 44 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 18 days longer, to about April 2, and return around November 6. Nights of 24°F, cold enough to damage hardier plants, come in 100% of winters and 16°F in 54%.

Spring: the chance of another night this cold after the date
Low90%80%70%60%50%40%30%20%10%
36°FMar 10Mar 18Mar 25Mar 31Apr 2Apr 6Apr 10Apr 15Apr 24
32°FFeb 25Mar 3Mar 8Mar 11Mar 15Mar 21Mar 27Apr 1Apr 9
28°FFeb 9Feb 16Feb 21Feb 27Mar 3Mar 6Mar 11Mar 17Mar 27
24°FJan 16Jan 29Feb 5Feb 9Feb 14Feb 20Feb 26Mar 2Mar 10
20°F86% of yrsDec 23Jan 2Jan 10Jan 18Jan 27Feb 1Feb 8Feb 16Feb 26
16°F54% of yrsDec 20Dec 28Jan 3Jan 7Jan 12Jan 20Jan 28Feb 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 23Oct 27Nov 1Nov 4Nov 6Nov 9Nov 12Nov 15Nov 20
32°FNov 1Nov 5Nov 8Nov 12Nov 16Nov 19Nov 22Nov 26Dec 1
28°FNov 7Nov 13Nov 18Nov 22Nov 26Nov 30Dec 3Dec 7Dec 13
24°FNov 18Nov 25Nov 30Dec 4Dec 8Dec 13Dec 19Dec 24Jan 1
20°F86% of yrsNov 30Dec 7Dec 13Dec 20Dec 25Dec 31Jan 4Jan 11Jan 24
16°F54% of yrsDec 9Dec 15Dec 23Dec 28Jan 2Jan 6Jan 12Jan 20Feb 1

Freeze probabilities 1991–2020 at Odessa, 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 79761 →Compare Odessa with another place →

Weather by month in Odessa

July is the warmest month at Odessa, TX, averaging 94°F by day and 71°F at night; January is the coldest at 57°F and 32°F. A freezing night is all but certain in every month from December to February (a 90% chance or more). From May to October the chance of a 32°F night stays under 10% each month. In spring, March still brings one in 80% of years and April still brings one in 22% of years.

Warmth for growing adds up to 5,904 growing degree days a year (base 50°F), fewer than at 77% of the 351 Texas stations. 43% of them (2,521) have built up by the end of June, and July adds the most, 1,004. Precipitation totals 12.3 inches a year, most in May (1.6") and least in February (0.5"); May to September bring 59% of it.

Monthly normals 1991–2020 at Odessa, TX
MonthHigh °FLow °FPrecip. in32°F nightNights ≤ 32°FGDD 50°F
Jan57320.7100%1438
Feb62360.5100%1091
Mar71440.780%2264
Apr79510.722%1459
May87611.61%<1738
Jun94681.00%0931
Jul94711.50%01004
Aug93701.60%0973
Sep85621.50%0716
Oct77531.310%1473
Nov66410.686%4169
Dec58330.6100%1247

Monthly normals 1991–2020 at Odessa, TX (2,910 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, Odessa Schlemeyer Field, TX, 5 miles north of Odessa, has a last frost 4 days later (March 19), a first frost 5 days earlier (November 11), a season 8 days shorter.

Frost dates for 79764 (Odessa) →

When it snows in Odessa, Texas

Measurable snow is rare here: only 5 of 27 winters from 1991 to 2020 recorded 0.1 inch or more at Odessa, TX, 1.7 miles away, so there is no typical first-snow date to plan around.

Planting calendar for 79761

What to do and when, from the 50% frost dates for Odessa, Texas
WhenWhat to do
January 4 – January 18Start peppers and aubergines indoorsThey need eight to ten weeks under lights before they can go out.
January 18 – February 1Start tomatoes indoorsSix to eight weeks gives a transplant big enough to set fruit early.
February 15 – March 1Sow peas, spinach, lettuce, radish outdoorsThese tolerate light frost and prefer to germinate in cool soil.
March 15 onwardTransplant tomatoes, peppers, basil, squash, cucumbersThe average last freeze has passed — still watch the actual forecast.
by August 24Sow the autumn crop of carrots, beets and brassicasThey need about twelve weeks to size up before growth stops.
by November 2Harvest tender crops, or be ready to cover themA first freeze two weeks early is well within normal variation.
November 16 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 79761 is 2 miles from Odessa, TX, which stands at 2,910 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. 3 other ZIP codes share the station; its figures are presented in full for 79762 (Odessa). The 2023 USDA Plant Hardiness Zone Map lists ZIP 79761 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 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.

ZIP codes measured at the same station

Other zone 8b places in Texas