Frost dates / Texas / McAllen
Frost dates in McAllen, TX
The station on this page is MCALLEN, TX US (USC00415701), 2.3 miles from the city point. Population in the Census 2024 estimate is 148,782.
Zone 10aUSDA average annual extreme minimum 30°F to 35°F, from ZIP 78501 (0.7 miles from the city point used on this page).
Outside the median season Growing seasonTicks: 10%, 50%, and 90%
Last 32°F in spring
NCEI’s probability is the chance the last spring minimum of 32°F or lower occurs on or after the date.
| Probability | Date | How to read it |
|---|---|---|
| 90% | December 14 | Earlier date. A last 32°F on or after this day is common. |
| 50% | January 9 | Median. |
| 10% | February 12 | Later date. A last 32°F on or after this day is uncommon. |
First 32°F in fall
NCEI’s probability is the chance the first autumn minimum of 32°F or lower occurs on or before the date.
| Probability | Date | How to read it |
|---|---|---|
| 10% | December 8 | Earlier date. A first 32°F on or before this day is uncommon. |
| 50% | January 1 | Median. |
| 90% | February 4 | Later date. A first 32°F on or before this day is common. |
32°F growing-season length
Days between the last spring 32°F and the first autumn 32°F. The figure is a length the season meets or exceeds at that probability, from NCEI, not a subtraction done on this site.
| Probability the season is at least this long | Days |
|---|---|
| 10% | 365 |
| 50% | 365 |
| 90% | 324 |
28°F threshold
| 10% | 50% | 90% | |
|---|---|---|---|
| Last, on or after | February 9 | January 4 | December 15 |
| First, on or before | December 14 | January 2 | February 6 |
| Season at least | 365 days | 365 days | 354 days |
36°F threshold
| 10% | 50% | 90% | |
|---|---|---|---|
| Last, on or after | March 1 | January 27 | December 20 |
| First, on or before | November 27 | December 19 | January 26 |
| Season at least | 365 days | 330 days | 289 days |
Station MCALLEN, TX US (USC00415701). Completeness flag R, 27 years used for the 32°F dates. NCEI’s annual probability of at least one day at or below 32°F is 48.2%. Freeze dates are conditional on that threshold occurring. Elevation 30.5 m. The same probability language applies to the 28°F and 36°F rows when those dates passed the same quality checks.
Planting calendar for McAllen · Zone 10a
Check a crop against this station
McAllen, TX
Zone 10aAverage annual extreme minimum 30°F to 35°F
Outside the median season Growing seasonTicks: 10%, 50%, and 90%
Texas. Nearest qualified station: MCALLEN, TX US (USC00415701), 2.3 miles. Median last 32°F January 9. Median first 32°F January 1. The 50% growing-season length is 365 days.
Open the ZIP page · Crop guides for Texas
32°F probabilities at this station
| 10% | 50% | 90% | |
|---|---|---|---|
| Last 32°F on or after | February 12 | January 9 | December 14 |
| First 32°F on or before | December 8 | January 1 | February 4 |
Column order matches the NCEI file: for the last freeze, 10% is the later date and 90% is the earlier date. How to read the probabilities.
Planting calendar
Windows below are from Texas A&M AgriLife Extension, Texas Home Vegetable Gardening Guide, retrieved 2026-10-10. Table 8 is statewide and is written as weeks before or after the frost-free date (spring) and the first freeze date (fall). It is not a single calendar date for every Texas city.
Date checks use your device’s calendar and appear after the page loads.