Frost dates for ZIP 78539 (Edinburg, TX)
Average last spring and first fall frost dates with 10%, 50% and 90% odds, from NOAA's 1991–2020 climate normals for the nearest weather station, Edinburg, TX (2 miles away).
Freezes are uncommon here
NOAA's normals for this station show a 32°F night in about 40% of years (about 1 freezing night(s) a year on average). The dates below describe freeze timing for the station's record; in many years there may be no 32°F freeze at all.
- Average last spring frostJan 850% chance of a 32°F freeze after this date
- Average first fall frostJan 2 (next year)50% chance of a 32°F freeze by this date
- Growing season (frost-free)year-round in a typical yearmedian, 32°F threshold
- USDA hardiness zone10a30 to 35°F avg. coldest night
Last spring frost odds
| Chance of a 32°F freeze after this date | Date |
|---|---|
| 90% (early: most years still freeze after this) | Dec 17 (prior Dec) |
| 50% (the "average" last frost) | Jan 8 |
| 10% (safe-side: only 1 year in 10 freezes later) | Feb 21 |
Most gardeners plant frost-tender crops (tomatoes, peppers, basil) after the 50% date, and closer to the 10% date for less risk.
First fall frost odds
| Chance the first 32°F freeze has happened by this date | Date |
|---|---|
| 10% (early: 1 year in 10 freezes this soon) | Dec 11 |
| 50% (the "average" first frost) | Jan 2 (next year) |
| 90% (late: most years have frozen by now) | Feb 6 (next year) |
Light frost, freeze and hard freeze
| Threshold | Last spring (50%) | First fall (50%) |
|---|---|---|
| 36°F (light frost possible on clear, calm nights) | Jan 25 | Dec 27 |
| 32°F (freeze) | Jan 8 | Jan 2 (next year) |
| 28°F (hard freeze) | Jan 3 | Jan 1 (next year) |
n/a means NOAA did not publish a date at that threshold for this station (usually because it rarely gets that cold).
This week in Edinburg
Soil temperature now
2-inch depth
75°F 55°F or warmer
24-hour average · latest 75°F, as of Oct 17, 8:00 PM CDT
Estimate Not a measurement at this ZIP: distance-weighted average of Weslaco (16 mi), Texas AgriScience (18 mi), Edinburg 17 NNE (19 mi).
4-inch depth
77°F 55°F or warmer
24-hour average · latest 78°F, as of Oct 17, 8:00 PM CDT
Estimate Not a measurement at this ZIP: distance-weighted average of Weslaco (16 mi), Texas AgriScience (18 mi), Edinburg 17 NNE (19 mi).
Fall: Texas A&M AgriLife times fall pre-emergent (for winter weeds such as annual bluegrass) to soil cooling to about 70°F for several days. The 50–55°F band is the spring trigger. Always read and follow the product label.
7-day forecast and frost risk
No frost in the 7-day forecast.
| Period | High | Low | Forecast |
|---|---|---|---|
| Tonight | 56° | Mostly Clear | |
| Sunday | 78° | 64° | Mostly Sunny |
| Monday | 84° | 68° | Partly Sunny then Slight Chance Rain Showers |
| Tuesday | 88° | 70° | Mostly Sunny |
| Wednesday | 89° | 69° | Chance Showers And Thunderstorms |
| Thursday | 90° | 67° | Sunny |
| Friday | 91° | 70° | Sunny |
National Weather Service forecast, issued Oct 17, 8:35 PM CDT. Frost can form above 32°F on clear, calm nights. Full NWS forecast.
Free frost alerts for 78539
An email when the National Weather Service forecasts a freeze for this ZIP, plus the spring soil-temperature heads-up. At most a few a month.
Alerts open soon. This form is a preview and doesn't send anything yet.
Where these numbers come from
Station: Edinburg, TX (NOAA GHCN-Daily ID USC00412758), elevation 96 ft, 2.0 miles from the ZIP's center point. NOAA completeness flag: R (representative, 10+ years).
Nearby stations
| Station | Distance | Last frost (50%) | First frost (50%) |
|---|---|---|---|
| Mcallen, TX | 7 mi | Jan 9 | Jan 1 (next year) |
| Mcallen Miller Intl AP, TX | 8 mi | Jan 9 | Jan 3 (next year) |
| La Joya, TX | 9 mi | Jan 23 | Dec 28 |
The average last-frost dates of these stations span 15 days, a rough guide to local variation. See data sources & methods.
Questions
When is the last frost in 78539?
The average (50% chance) last spring freeze of 32°F for ZIP 78539 is January 8. For a safer planting date, use February 21, when only 1 year in 10 still sees a later freeze.
When is the first frost in 78539?
The average first fall freeze is January 2 (next year). In 1 year in 10 it comes by December 11.
What hardiness zone is 78539?
ZIP 78539 is in USDA zone 10a (30 to 35°F average coldest winter night), per the 2023 USDA Plant Hardiness Zone Map ZIP listing.
Other ZIP codes in Hidalgo County
78501 78503 78504 78516 78537 78538 78540 78541 78542 78543 78549 78557 78558 78560 78562 78563 78565 78570 78572 78573 78574 78576 78577 78579 All Hidalgo County ZIPs