USDA Hardiness Zone 10a
Frost Dates for 78580 — Raymondville, Texas
NOAA 1991–2020 normals from Raymondville, TX (31 ft), 3 miles southeast.
Updated
A freeze (32°F) reaches Raymondville in 77% of winters. When it does, the first fall frost comes around December 26 and the last spring frost around January 21; after February 27 the chance of another is under 8%.
- Last spring frost
- January 21
- First fall frost
- December 26
- Winters with a freeze
- 77%
- 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
- 0.2"
median, 1991–2020
median, 1991–2020
1 of 20 observed
NOAA normal
Frost risk by date in Raymondville
In the 77% of winters that bring a 32°F night, half of springs at Raymondville, TX see their last 32°F night by January 21; only one in ten is past it by December 18, and one in ten still has one after February 27. Counting the winters with no freeze at all, the risk of a 32°F night after February 27 is under 8% and after January 21 38%. The 37 days between the even-odds date and the one-in-ten date is wider than at 98% 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 26 in half of years, as early as December 1 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 36% of winters. The freeze-free season lasts 340 days in a typical year, longer than at 98% of the 339 Texas stations; it reaches 365 days one year in ten and falls short of 301 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 25 days longer, to about February 15, and return around December 8. A 24°F night is unusual: 11% of winters had one.
| Low | 90% | 80% | 70% | 60% | 50% | 40% | 30% | 20% | 10% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F98% of yrs | Jan 3 | Jan 20 | Jan 29 | Feb 6 | Feb 15 | Feb 22 | Feb 28 | Mar 6 | Mar 16 |
| 32°F77% of yrs | Dec 18 | Dec 31 | Jan 5 | Jan 11 | Jan 21 | Jan 29 | Feb 5 | Feb 17 | Feb 27 |
| 28°F36% of yrs | too rare for a date | ||||||||
| 24°F11% 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°F98% of yrs | Nov 18 | Nov 25 | Nov 30 | Dec 4 | Dec 8 | Dec 14 | Dec 20 | Dec 27 | Jan 5 |
| 32°F77% of yrs | Dec 1 | Dec 6 | Dec 13 | Dec 19 | Dec 26 | Jan 1 | Jan 5 | Jan 12 | Feb 1 |
| 28°F36% of yrs | too rare for a date | ||||||||
| 24°F11% of yrs | too rare for a date | ||||||||
| 20°F1% of yrs | too rare for a date | ||||||||
Freeze probabilities 1991–2020 at Raymondville, 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 78580 →Compare Raymondville with another place →
Weather by month in Raymondville
August is the warmest month at Raymondville, TX, averaging 98°F by day and 75°F at night; January is the coldest at 71°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 22% of years.
Warmth for growing adds up to 9,001 growing degree days a year (base 50°F), more than at 96% of the 351 Texas stations. 45% of them (4,060) have built up by the end of June, and August adds the most, 1,135. Precipitation totals 25.6 inches a year, most in September (5.6") and least in November (0.9"); May to September bring 62% of it.
| Month | High °F | Low °F | Precip. in | 32°F night | Nights ≤ 32°F | GDD 50°F |
|---|---|---|---|---|---|---|
| Jan | 71 | 48 | 1.0 | 44% | 1 | 326 |
| Feb | 76 | 52 | 1.0 | 22% | 1 | 402 |
| Mar | 81 | 58 | 1.4 | 6% | <1 | 602 |
| Apr | 87 | 63 | 1.4 | 0% | 0 | 752 |
| May | 91 | 70 | 3.0 | 0% | 0 | 939 |
| Jun | 95 | 74 | 2.6 | 0% | 0 | 1039 |
| Jul | 97 | 75 | 2.5 | 0% | 0 | 1113 |
| Aug | 98 | 75 | 2.1 | 0% | 0 | 1135 |
| Sep | 93 | 72 | 5.6 | 0% | 0 | 971 |
| Oct | 88 | 64 | 3.0 | 0% | 0 | 815 |
| Nov | 80 | 56 | 0.9 | 6% | <1 | 543 |
| Dec | 73 | 50 | 1.1 | 41% | 1 | 365 |
Monthly normals 1991–2020 at Raymondville, TX (31 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, Santa Rosa 3 WNW, TX, 17 miles south of Raymondville, has a last frost 11 days earlier (January 10), a first frost 1 day later (December 27), a season 15 days longer.
When it snows in Raymondville, Texas
Measurable snow is rare here: only 1 of 20 winters from 1991 to 2020 recorded 0.1 inch or more at Raymondville, TX, 2.9 miles away, so there is no typical first-snow date to plan around.
Where these figures come from
ZIP 78580 is 3 miles from Raymondville, TX, which stands at 31 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. 1 other ZIP code shares the station. The 2023 USDA Plant Hardiness Zone Map lists ZIP 78580 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.