USDA Hardiness Zone 10a
Frost Dates for 78412 — Corpus Christi, Texas
NOAA 1991–2020 normals from C C Botanical Gardens, TX (16 ft), 4 miles southwest.
Updated
A freeze (32°F) reaches Corpus Christi in 80% of winters. When it does, the first fall frost comes around December 24 and the last spring frost around January 29; after March 1 the chance of another is under 8%.
- Last spring frost
- January 29
- First fall frost
- December 24
- Winters with a freeze
- 80%
- Hardiness zone
- 10a
50%, in freezing years
50%, in freezing years
32°F or below, 1991–2020
30 to 35°F (-1.1 to 1.7°C) coldest night
- First snow
- Rare
- Last snow
- Rare
- Winters with snow
- 6%
- Snow per year
- 0.3"
median, 1991–2020
median, 1991–2020
1 of 17 observed
NOAA normal
Frost risk by date in Corpus Christi
In the 80% of winters that bring a 32°F night, half of springs at C C Botanical Gardens, TX see their last 32°F night by January 29; only one in ten is past it by December 15, and one in ten still has one after March 1. Counting the winters with no freeze at all, the risk of a 32°F night after March 1 is under 8% and after January 29 40%. The 31 days between the even-odds date and the one-in-ten date is wider than at 92% 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 December 24 in half of years, as early as December 1 one year in ten, and holds off past February 5 one year in ten. A hard freeze of 28°F is less common: it came in 37% of winters. The freeze-free season lasts 337 days in a typical year, longer than at 97% of the 339 Texas stations; it reaches 365 days one year in ten and falls short of 297 one year in ten. On average 3 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 16 days longer, to about February 14, and return around December 9. A 24°F night is unusual: 8% of winters had one.
| Low | 90% | 80% | 70% | 60% | 50% | 40% | 30% | 20% | 10% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F99% of yrs | Jan 11 | Jan 24 | Jan 31 | Feb 7 | Feb 14 | Feb 21 | Feb 26 | Mar 3 | Mar 10 |
| 32°F80% of yrs | Dec 15 | Dec 28 | Jan 6 | Jan 20 | Jan 29 | Feb 4 | Feb 11 | Feb 20 | Mar 1 |
| 28°F37% of yrs | too rare for a date | ||||||||
| 24°F8% of yrs | too rare for a date | ||||||||
| 20°F0% of yrs | too rare for a date | ||||||||
| Low | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F99% of yrs | Nov 16 | Nov 24 | Dec 1 | Dec 5 | Dec 9 | Dec 14 | Dec 21 | Dec 29 | Jan 8 |
| 32°F80% of yrs | Dec 1 | Dec 7 | Dec 12 | Dec 18 | Dec 24 | Jan 1 | Jan 6 | Jan 18 | Feb 5 |
| 28°F37% of yrs | too rare for a date | ||||||||
| 24°F8% of yrs | too rare for a date | ||||||||
| 20°F0% of yrs | too rare for a date | ||||||||
Freeze probabilities 1991–2020 at C C Botanical Gardens, 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 78412 →Compare Corpus Christi with another place →
Weather by month in Corpus Christi
August is the warmest month at C C Botanical Gardens, TX, averaging 91°F by day and 76°F at night; January is the coldest at 65°F and 48°F. From March to November the chance of a 32°F night stays under 10% each month. In spring, February still brings one in 30% of years.
Warmth for growing adds up to 8,018 growing degree days a year (base 50°F), more than at 89% of the 351 Texas stations. 44% of them (3,509) have built up by the end of June, and August adds the most, 1,049. Precipitation totals 32.3 inches a year, most in September (6.5") and least in February (1.5"); May to September bring 57% of it.
| Month | High °F | Low °F | Precip. in | 32°F night | Nights ≤ 32°F | GDD 50°F |
|---|---|---|---|---|---|---|
| Jan | 65 | 48 | 1.8 | 40% | 1 | 235 |
| Feb | 69 | 52 | 1.5 | 30% | 1 | 317 |
| Mar | 75 | 58 | 2.0 | 9% | 0 | 509 |
| Apr | 79 | 64 | 1.8 | 0% | 0 | 635 |
| May | 84 | 70 | 3.7 | 0% | 0 | 842 |
| Jun | 90 | 75 | 4.1 | 0% | 0 | 970 |
| Jul | 90 | 76 | 2.3 | 0% | 0 | 1026 |
| Aug | 91 | 76 | 1.8 | 0% | 0 | 1049 |
| Sep | 88 | 73 | 6.5 | 0% | 0 | 906 |
| Oct | 83 | 66 | 2.7 | 0% | 0 | 755 |
| Nov | 74 | 57 | 2.3 | 8% | <1 | 472 |
| Dec | 68 | 50 | 1.8 | 44% | 1 | 301 |
Monthly normals 1991–2020 at C C Botanical Gardens, TX (16 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, Corpus Christi NAS, TX, 5 miles southeast of Corpus Christi, has a 32°F night in 31% of winters against 80% here, and a coolest-month low 4°F warmer (52°F).
When it snows in Corpus Christi, Texas
Measurable snow is rare here: only 1 of 17 winters from 1991 to 2020 recorded 0.1 inch or more at C C Botanical Gardens, TX, 4.4 miles away, so there is no typical first-snow date to plan around.
Where these figures come from
ZIP 78412 is 4 miles from C C Botanical Gardens, TX, which stands at 16 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. 2 other ZIP codes share the station; its figures are presented in full for 78414 (Corpus Christi). The 2023 USDA Plant Hardiness Zone Map lists ZIP 78412 in zone 10a, the band where the coldest night of the year averaged 30 to 35°F (-1.1 to 1.7°C) over 1991–2020; a zone describes winter lows, not frost dates.
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.