Frost dates / Texas / Bryan

Frost dates in Bryan, TX

The station on this page is COLLEGE STN, TX US (USW00003904), 5.4 miles from the city point. Population in the Census 2024 estimate is 91,541.

Zone 9aUSDA average annual extreme minimum 20°F to 25°F, from ZIP 77803 (0.9 miles from the city point used on this page).

Median last 32°F is February 27. Median first 32°F is November 30. The 50% growing-season length is 278 days. The green band runs from the median last frost to the median first frost. Thin ticks mark the 10%, 50%, and 90% dates.

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 31	Earlier date. A last 32°F on or after this day is common.
50%	February 27	Median.
10%	March 18	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 10	Earlier date. A first 32°F on or before this day is uncommon.
50%	November 30	Median.
90%	December 26	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%	315
50%	278
90%	247

28°F threshold

	10%	50%	90%
Last, on or after	March 9	February 7	January 6
First, on or before	November 23	December 18	January 22
Season at least	353 days	316 days	274 days

36°F threshold

	10%	50%	90%
Last, on or after	April 2	March 11	February 22
First, on or before	November 1	November 17	December 5
Season at least	280 days	250 days	223 days

Station COLLEGE STN, TX US (USW00003904). 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 93 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 Bryan · Zone 9a

Check a crop against this station

Bryan, TX

Zone 9aAverage annual extreme minimum 20°F to 25°F

Outside the median season Growing seasonTicks: 10%, 50%, and 90%

Texas. Nearest qualified station: COLLEGE STN, TX US (USW00003904), 5.4 miles. Median last 32°F February 27. Median first 32°F November 30. The 50% growing-season length is 278 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 18	February 27	January 31
First 32°F on or before	November 10	November 30	December 26

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.

A wall calendar surrounded by vegetables, herbs, seed packets, and watering cans.

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.

Crop

Date checks use your device’s calendar and appear after the page loads.