Frost dates for ZIP 77845 (College Station, TX)
Average last spring and first fall frost dates with 10%, 50% and 90% odds, from NOAA's 1991–2020 climate normals for the nearest weather station, College STN, TX (6 miles away).
- Average last spring frostFeb 2750% chance of a 32°F freeze after this date
- Average first fall frostNov 3050% chance of a 32°F freeze by this date
- Growing season (frost-free)278 daysmedian, 32°F threshold
- USDA hardiness zone9a20 to 25°F avg. coldest night
Last spring frost odds
| Chance of a 32°F freeze after this date | Date |
|---|---|
| 90% (early: most years still freeze after this) | Jan 31 |
| 50% (the "average" last frost) | Feb 27 |
| 10% (safe-side: only 1 year in 10 freezes later) | Mar 18 |
Most gardeners plant frost-tender crops (tomatoes, peppers, basil) after the 50% date, and closer to the 10% date for less risk.
First fall frost odds
| Chance the first 32°F freeze has happened by this date | Date |
|---|---|
| 10% (early: 1 year in 10 freezes this soon) | Nov 10 |
| 50% (the "average" first frost) | Nov 30 |
| 90% (late: most years have frozen by now) | Dec 26 |
Light frost, freeze and hard freeze
| Threshold | Last spring (50%) | First fall (50%) |
|---|---|---|
| 36°F (light frost possible on clear, calm nights) | Mar 11 | Nov 17 |
| 32°F (freeze) | Feb 27 | Nov 30 |
| 28°F (hard freeze) | Feb 7 | Dec 18 |
n/a means NOAA did not publish a date at that threshold for this station (usually because it rarely gets that cold).
This week in College Station
Soil temperature now
2-inch depth
72°F 55°F or warmer
24-hour average · latest 75°F, as of Oct 17, 8:00 PM CDT
Estimate Not a measurement at this ZIP: distance-weighted average of Goetsch Ranch (34 mi), Prairie View #1 (37 mi), City of Rogers (62 mi).
4-inch depth
74°F 55°F or warmer
24-hour average · latest 76°F, as of Oct 17, 8:00 PM CDT
Estimate Not a measurement at this ZIP: distance-weighted average of Goetsch Ranch (34 mi), Prairie View #1 (37 mi), City of Rogers (62 mi).
Fall: Texas A&M AgriLife times fall pre-emergent (for winter weeds such as annual bluegrass) to soil cooling to about 70°F for several days. The 50–55°F band is the spring trigger. Always read and follow the product label.
7-day forecast and frost risk
No frost in the 7-day forecast.
| Period | High | Low | Forecast |
|---|---|---|---|
| Tonight | 46° | Mostly Clear | |
| Sunday | 73° | 49° | Sunny |
| Monday | 77° | 53° | Mostly Sunny |
| Tuesday | 81° | 55° | Sunny |
| Wednesday | 86° | 56° | Sunny |
| Thursday | 88° | 57° | Sunny |
| Friday | 88° | 60° | Sunny |
National Weather Service forecast, issued Oct 17, 8:28 PM CDT. Frost can form above 32°F on clear, calm nights. Full NWS forecast.
Free frost alerts for 77845
An email when the National Weather Service forecasts a freeze for this ZIP, plus the spring soil-temperature heads-up. At most a few a month.
Alerts open soon. This form is a preview and doesn't send anything yet.
Where these numbers come from
Station: College STN, TX (NOAA GHCN-Daily ID USW00003904), elevation 305 ft, 5.7 miles from the ZIP's center point. NOAA completeness flag: S (standard, 24+ years).
Nearby stations
| Station | Distance | Last frost (50%) | First frost (50%) |
|---|---|---|---|
| Washington Sp, TX | 18 mi | Mar 7 | Nov 19 |
| Somerville Dam, TX | 22 mi | Mar 18 | Nov 9 |
| Brenham, TX | 29 mi | Mar 2 | Nov 30 |
The average last-frost dates of these stations span 22 days, a rough guide to local variation. See data sources & methods.
Questions
When is the last frost in 77845?
The average (50% chance) last spring freeze of 32°F for ZIP 77845 is February 27. For a safer planting date, use March 18, when only 1 year in 10 still sees a later freeze.
When is the first frost in 77845?
The average first fall freeze is November 30. In 1 year in 10 it comes by November 10.
What hardiness zone is 77845?
ZIP 77845 is in USDA zone 9a (20 to 25°F average coldest winter night), per the 2023 USDA Plant Hardiness Zone Map ZIP listing.
Other ZIP codes in Brazos County
77801 77802 77803 77807 77808 77840 77843 77866 All Brazos County ZIPs