Frost dates / Texas / Allen
Frost dates in Allen, TX
The station on this page is MCKINNEY MUNI AP, TX US (USW00053914), 6.8 miles from the city point. Population in the Census 2024 estimate is 113,746.
Zone 8bUSDA average annual extreme minimum 15°F to 20°F, from ZIP 75013 (1.3 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% | February 28 | Earlier date. A last 32°F on or after this day is common. |
| 50% | March 18 | Median. |
| 10% | April 7 | 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% | October 27 | Earlier date. A first 32°F on or before this day is uncommon. |
| 50% | November 11 | Median. |
| 90% | December 1 | 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% | 266 |
| 50% | 239 |
| 90% | 211 |
28°F threshold
| 10% | 50% | 90% | |
|---|---|---|---|
| Last, on or after | March 22 | March 4 | February 9 |
| First, on or before | November 6 | November 24 | December 14 |
| Season at least | 294 days | 266 days | 237 days |
36°F threshold
| 10% | 50% | 90% | |
|---|---|---|---|
| Last, on or after | April 22 | April 3 | March 14 |
| First, on or before | October 19 | November 1 | November 18 |
| Season at least | 239 days | 213 days | 190 days |
Station MCKINNEY MUNI AP, TX US (USW00053914). Completeness flag R, 21 years used for the 32°F dates. NCEI’s annual probability of at least one day at or below 32°F is 100%. Freeze dates are conditional on that threshold occurring. Elevation 176.8 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 Allen · Zone 8b
Check a crop against this station
Allen, TX
Zone 8bAverage annual extreme minimum 15°F to 20°F
Outside the median season Growing seasonTicks: 10%, 50%, and 90%
Texas. Nearest qualified station: MCKINNEY MUNI AP, TX US (USW00053914), 6.8 miles. Median last 32°F March 18. Median first 32°F November 11. The 50% growing-season length is 239 days.
Open the ZIP page · Crop guides for Texas
32°F probabilities at this station
| 10% | 50% | 90% | |
|---|---|---|---|
| Last 32°F on or after | April 7 | March 18 | February 28 |
| First 32°F on or before | October 27 | November 11 | December 1 |
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.