USDA Hardiness Zone 10a
Frost Dates for 78541 — Edinburg, Texas
NOAA 1991–2020 normals from Edinburg, TX (96 ft), 2 miles south.
Updated
Frost is not a yearly event in Edinburg: a night at or below 32°F came in 40% of the winters of 1991–2020 at Edinburg, TX, and a 36°F night, cold enough for frost on exposed leaves, in 82%. There is no reliable "last frost date" here; most years have none.
- Winters with a freeze
- 40%
- Winters with 36°F
- 82%
- Coldest month low
- 49°F
- Hardiness zone
- 10a
32°F or below, 1991–2020
frost possible on leaves
average, January
30 to 35°F (-1.1 to 1.7°C) coldest night
- First snow
- Rare
- Last snow
- Rare
- Winters with snow
- 7%
- Snow per year
- 0.2"
median, 1991–2020
median, 1991–2020
1 of 15 observed
NOAA normal
Frost risk by date in Edinburg
At Edinburg, TX, 2 miles south of Edinburg, 40% of the winters of 1991–2020 had at least one night at or below 32°F, 11% reached 28°F. Nights of 36°F, enough for frost on exposed leaves, are more common (82% of winters) and, when they come, fall between about December 27 and January 25. January is the month most likely to bring one: a 20% chance in a given year. 11 of the 351 other Texas stations behind this site's ZIP pages freeze in fewer than half of winters too.
| Low | 90% | 80% | 70% | 60% | 50% | 40% | 30% | 20% | 10% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F82% of yrs | Dec 22 | Dec 31 | Jan 9 | Jan 17 | Jan 25 | Jan 31 | Feb 9 | Feb 20 | Mar 3 |
| 32°F40% of yrs | too rare for a date | ||||||||
| 28°F11% of yrs | too rare for a date | ||||||||
| 24°F0% of yrs | too rare for a date | ||||||||
| Low | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F82% of yrs | Dec 1 | Dec 8 | Dec 14 | Dec 20 | Dec 27 | Jan 1 | Jan 5 | Jan 12 | Jan 29 |
| 32°F40% of yrs | too rare for a date | ||||||||
| 28°F11% of yrs | too rare for a date | ||||||||
| 24°F0% of yrs | too rare for a date | ||||||||
Freeze probabilities 1991–2020 at Edinburg, 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 78541 →Compare Edinburg with another place →
Weather by month in Edinburg
August is the warmest month at Edinburg, TX, averaging 98°F by day and 77°F at night; January is the coldest at 70°F and 49°F. From February to November the chance of a 32°F night stays under 10% each month.
Warmth for growing adds up to 9,190 growing degree days a year (base 50°F), more than at 98% of the 351 Texas stations. 45% of them (4,125) have built up by the end of June, and August adds the most, 1,148.
| Month | High °F | Low °F | 32°F night | Nights ≤ 32°F | GDD 50°F |
|---|---|---|---|---|---|
| Jan | 70 | 49 | 20% | 1 | 325 |
| Feb | 75 | 54 | 7% | 1 | 414 |
| Mar | 80 | 58 | 3% | 0 | 593 |
| Apr | 86 | 65 | 0% | 0 | 761 |
| May | 92 | 71 | 0% | 0 | 983 |
| Jun | 95 | 75 | 0% | 0 | 1050 |
| Jul | 97 | 77 | 0% | 0 | 1136 |
| Aug | 98 | 77 | 0% | 0 | 1148 |
| Sep | 93 | 73 | 0% | 0 | 1001 |
| Oct | 89 | 66 | 0% | 0 | 852 |
| Nov | 79 | 58 | 0% | 0 | 552 |
| Dec | 73 | 51 | 17% | <1 | 376 |
Monthly normals 1991–2020 at Edinburg, TX (96 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, La Joya, TX, 10 miles west of Edinburg, has a 32°F night in 79% of winters against 40% here, and a coolest-month low 2°F colder (47°F).
When it snows in Edinburg, Texas
Measurable snow is rare here: only 1 of 15 winters from 1991 to 2020 recorded 0.1 inch or more at La Joya, TX, 10.4 miles away, so there is no typical first-snow date to plan around.
Where these figures come from
ZIP 78541 is 2 miles from Edinburg, TX, which stands at 96 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 78542 (Edinburg). The 2023 USDA Plant Hardiness Zone Map lists ZIP 78541 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.