Frost dates / Texas / Sugar Land
Frost dates in Sugar Land, TX
The station on this page is SUGAR LAND, TX US (USC00418728), 2.4 miles from the city point. Population in the Census 2024 estimate is 109,851.
Zone 9bUSDA average annual extreme minimum 25°F to 30°F, from ZIP 77479 (1.9 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% | January 13 | Earlier date. A last 32°F on or after this day is common. |
| 50% | February 9 | Median. |
| 10% | March 11 | 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% | November 19 | Earlier date. A first 32°F on or before this day is uncommon. |
| 50% | December 13 | Median. |
| 90% | January 13 | 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% | 340 |
| 50% | 305 |
| 90% | 269 |
28°F threshold
| 10% | 50% | 90% | |
|---|---|---|---|
| Last, on or after | February 28 | January 28 | December 26 |
| First, on or before | November 30 | January 1 | February 2 |
| Season at least | 365 days | 337 days | 296 days |
36°F threshold
| 10% | 50% | 90% | |
|---|---|---|---|
| Last, on or after | March 25 | March 2 | February 2 |
| First, on or before | November 9 | November 29 | December 20 |
| Season at least | 306 days | 272 days | 243 days |
Station SUGAR LAND, TX US (USC00418728). Completeness flag R, 14 years used for the 32°F dates. NCEI’s annual probability of at least one day at or below 32°F is 97.6%. Freeze dates are conditional on that threshold occurring. Elevation 25.6 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 Sugar Land · Zone 9b
Check a crop against this station
Sugar Land, TX
Zone 9bAverage annual extreme minimum 25°F to 30°F
Outside the median season Growing seasonTicks: 10%, 50%, and 90%
Texas. Nearest qualified station: SUGAR LAND, TX US (USC00418728), 2.4 miles. Median last 32°F February 9. Median first 32°F December 13. The 50% growing-season length is 305 days.
Open the ZIP page · Crop guides for Texas
32°F probabilities at this station
| 10% | 50% | 90% | |
|---|---|---|---|
| Last 32°F on or after | March 11 | February 9 | January 13 |
| First 32°F on or before | November 19 | December 13 | January 13 |
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.