USDA Hardiness Zone 9b
Frost Dates for 77983 — Seadrift, Texas
NOAA 1991–2020 normals from Austwell, TX (23 ft), 8 miles west.
Updated
A freeze (32°F) reaches Seadrift in 84% of winters. When it does, the first fall frost comes around December 27 and the last spring frost around January 30; after March 2 the chance of another is under 8%.
- Last spring frost
- January 30
- First fall frost
- December 27
- Winters with a freeze
- 84%
- Hardiness zone
- 9b
50%, in freezing years
50%, in freezing years
32°F or below, 1991–2020
25 to 30°F (-3.9 to -1.1°C) coldest night
- First snow
- Rare
- Last snow
- Rare
- Winters with snow
- 5%
- Snow per year
- 0.3"
median, 1991–2020
median, 1991–2020
1 of 22 observed
NOAA normal
Frost risk by date in Seadrift
In the 84% of winters that bring a 32°F night, half of springs at Austwell, TX see their last 32°F night by January 30; only one in ten is past it by December 19, and one in ten still has one after March 2. Counting the winters with no freeze at all, the risk of a 32°F night after March 2 is under 8% and after January 30 42%. 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 27 in half of years, as early as November 27 one year in ten, and holds off past February 6 one year in ten. A hard freeze of 28°F is less common: it came in 40% of winters. The freeze-free season lasts 333 days in a typical year, longer than at 96% of the 339 Texas stations; it reaches 365 days one year in ten and falls short of 295 one year in ten. On average 5 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 February 17, and return around December 9. A 24°F night is unusual: 9% of winters had one.
| Low | 90% | 80% | 70% | 60% | 50% | 40% | 30% | 20% | 10% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F99% of yrs | Jan 16 | Jan 28 | Feb 4 | Feb 10 | Feb 17 | Feb 23 | Mar 1 | Mar 5 | Mar 11 |
| 32°F84% of yrs | Dec 19 | Jan 2 | Jan 14 | Jan 22 | Jan 30 | Feb 5 | Feb 13 | Feb 19 | Mar 2 |
| 28°F40% of yrs | too rare for a date | ||||||||
| 24°F9% of yrs | too rare for a date | ||||||||
| 20°F1% 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 | Nov 30 | Dec 4 | Dec 9 | Dec 15 | Dec 22 | Dec 31 | Jan 8 |
| 32°F84% of yrs | Nov 27 | Dec 5 | Dec 13 | Dec 19 | Dec 27 | Jan 1 | Jan 9 | Jan 20 | Feb 6 |
| 28°F40% of yrs | too rare for a date | ||||||||
| 24°F9% of yrs | too rare for a date | ||||||||
| 20°F1% of yrs | too rare for a date | ||||||||
Freeze probabilities 1991–2020 at Austwell, 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 77983 →Compare Seadrift with another place →
Compared with the next station
The nearest other station, Pt Comfort, TX, 20 miles northeast of Seadrift, has a last frost 2 days later (February 1), a first frost 6 days earlier (December 21), a season 12 days shorter.
When it snows in Seadrift, Texas
Measurable snow is rare here: only 1 of 22 winters from 1991 to 2020 recorded 0.1 inch or more at Aransas Wr, TX, 9.1 miles away, so there is no typical first-snow date to plan around.
Where these figures come from
ZIP 77983 is 8 miles from Austwell, TX, which stands at 23 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. The 2023 USDA Plant Hardiness Zone Map lists ZIP 77983 in zone 9b, the band where the coldest night of the year averaged 25 to 30°F (-3.9 to -1.1°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.