Frost dates / Texas / San Angelo
Frost dates in San Angelo, TX
The station on this page is SAN ANGELO, TX US (USW00023034), 5.4 miles from the city point. Population in the Census 2024 estimate is 100,159.
Zone 8aUSDA average annual extreme minimum 10°F to 15°F, from ZIP 76909 (0.9 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% | March 1 | Earlier date. A last 32°F on or after this day is common. |
| 50% | March 20 | Median. |
| 10% | April 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% | October 28 | Earlier date. A first 32°F on or before this day is uncommon. |
| 50% | November 10 | Median. |
| 90% | November 28 | 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% | 258 |
| 50% | 232 |
| 90% | 205 |
28°F threshold
| 10% | 50% | 90% | |
|---|---|---|---|
| Last, on or after | March 30 | March 6 | February 17 |
| First, on or before | November 5 | November 22 | December 8 |
| Season at least | 285 days | 259 days | 233 days |
36°F threshold
| 10% | 50% | 90% | |
|---|---|---|---|
| Last, on or after | April 25 | April 7 | March 18 |
| First, on or before | October 19 | November 1 | November 14 |
| Season at least | 231 days | 208 days | 186 days |
Station SAN ANGELO, TX US (USW00023034). Completeness flag S, 26 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 576.1 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 San Angelo · Zone 8a
Check a crop against this station
San Angelo, TX
Zone 8aAverage annual extreme minimum 10°F to 15°F
Outside the median season Growing seasonTicks: 10%, 50%, and 90%
Texas. Nearest qualified station: SAN ANGELO, TX US (USW00023034), 5.4 miles. Median last 32°F March 20. Median first 32°F November 10. The 50% growing-season length is 232 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 12 | March 20 | March 1 |
| First 32°F on or before | October 28 | November 10 | November 28 |
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.