USDA Hardiness Zone 10a
Frost Dates for 78559 — La Feria, Texas
NOAA 1991–2020 normals from Santa Rosa 3 WNW, TX (50 ft), 8 miles north.
Updated
A freeze (32°F) reaches La Feria in 63% of winters. When it does, the first fall frost comes around December 27 and the last spring frost around January 10; after February 24 the chance of another is under 6%.
- Last spring frost
- January 10
- First fall frost
- December 27
- Winters with a freeze
- 63%
- 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
- 5%
- Snow per year
- 0.1"
median, 1991–2020
median, 1991–2020
1 of 21 observed
NOAA normal
Frost risk by date in La Feria
In the 63% of winters that bring a 32°F night, half of springs at Santa Rosa 3 WNW, TX see their last 32°F night by January 10; only one in ten is past it by December 13, and one in ten still has one after February 24. Counting the winters with no freeze at all, the risk of a 32°F night after February 24 is under 6% and after January 10 32%. The 45 days between the even-odds date and the one-in-ten date is the widest 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 December 3 one year in ten, and holds off past February 1 one year in ten. A hard freeze of 28°F is less common: it came in 23% of winters. The freeze-free season lasts 355 days in a typical year, longer than at 99% of the 339 Texas stations; it reaches 365 days one year in ten and falls short of 314 one year in ten. On average 2 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 24 days longer, to about February 3, and return around December 12. A 24°F night is unusual: 5% of winters had one.
| Low | 90% | 80% | 70% | 60% | 50% | 40% | 30% | 20% | 10% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F95% of yrs | Dec 28 | Jan 8 | Jan 19 | Jan 27 | Feb 3 | Feb 11 | Feb 22 | Feb 28 | Mar 8 |
| 32°F63% of yrs | Dec 13 | Dec 23 | Dec 31 | Jan 6 | Jan 10 | Jan 20 | Jan 29 | Feb 6 | Feb 24 |
| 28°F23% of yrs | too rare for a date | ||||||||
| 24°F5% of yrs | too rare for a date | ||||||||
| Low | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F95% of yrs | Nov 22 | Nov 30 | Dec 4 | Dec 7 | Dec 12 | Dec 18 | Dec 25 | Jan 1 | Jan 12 |
| 32°F63% of yrs | Dec 3 | Dec 8 | Dec 13 | Dec 20 | Dec 27 | Jan 1 | Jan 5 | Jan 15 | Feb 1 |
| 28°F23% of yrs | too rare for a date | ||||||||
| 24°F5% of yrs | too rare for a date | ||||||||
Freeze probabilities 1991–2020 at Santa Rosa 3 WNW, 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 78559 →Compare La Feria with another place →
Weather by month in La Feria
August is the warmest month at Santa Rosa 3 WNW, TX, averaging 97°F by day and 75°F at night; January is the coldest at 71°F and 49°F. From March to November the chance of a 32°F night stays under 10% each month. In spring, February still brings one in 14% of years.
Warmth for growing adds up to 9,080 growing degree days a year (base 50°F), more than at 97% of the 351 Texas stations. 45% of them (4,114) have built up by the end of June, and August adds the most, 1,128. Precipitation totals 24.7 inches a year, most in September (5.6") and least in February (1.0"); May to September bring 60% of it.
| Month | High °F | Low °F | Precip. in | 32°F night | Nights ≤ 32°F | GDD 50°F |
|---|---|---|---|---|---|---|
| Jan | 71 | 49 | 1.1 | 32% | 1 | 334 |
| Feb | 76 | 53 | 1.0 | 14% | 1 | 414 |
| Mar | 81 | 58 | 1.4 | 4% | 0 | 612 |
| Apr | 86 | 64 | 1.4 | 0% | 0 | 759 |
| May | 91 | 71 | 2.5 | 0% | 0 | 952 |
| Jun | 95 | 75 | 2.9 | 0% | 0 | 1044 |
| Jul | 96 | 76 | 1.7 | 0% | 0 | 1116 |
| Aug | 97 | 75 | 2.1 | 0% | 0 | 1128 |
| Sep | 93 | 72 | 5.6 | 0% | 0 | 969 |
| Oct | 88 | 65 | 2.7 | 0% | 0 | 825 |
| Nov | 80 | 57 | 1.2 | 4% | 0 | 554 |
| Dec | 73 | 50 | 1.1 | 33% | 1 | 374 |
Monthly normals 1991–2020 at Santa Rosa 3 WNW, TX (50 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, Weslaco, TX, 9 miles west of La Feria, has a 32°F night in 44% of winters against 63% here, and a coolest-month low 1°F warmer (50°F).
When it snows in La Feria, Texas
Measurable snow is rare here: only 1 of 21 winters from 1991 to 2020 recorded 0.1 inch or more at Santa Rosa 3 WNW, TX, 8.4 miles away, so there is no typical first-snow date to plan around.
Where these figures come from
ZIP 78559 is 8 miles from Santa Rosa 3 WNW, TX, which stands at 50 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. 4 other ZIP codes share the station. The 2023 USDA Plant Hardiness Zone Map lists ZIP 78559 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.