Frost dates for ZIP 78951 (Colorado County, 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, Hallettsville 2 N, TX (12 miles away).
- Average last spring frostFeb 1750% chance of a 32°F freeze after this date
- Average first fall frostDec 450% chance of a 32°F freeze by this date
- Growing season (frost-free)297 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 19 |
| 50% (the "average" last frost) | Feb 17 |
| 10% (safe-side: only 1 year in 10 freezes later) | Mar 13 |
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 14 |
| 50% (the "average" first frost) | Dec 4 |
| 90% (late: most years have frozen by now) | Jan 8 (next year) |
Light frost, freeze and hard freeze
| Threshold | Last spring (50%) | First fall (50%) |
|---|---|---|
| 36°F (light frost possible on clear, calm nights) | Mar 5 | Nov 23 |
| 32°F (freeze) | Feb 17 | Dec 4 |
| 28°F (hard freeze) | Jan 30 | Dec 27 |
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 78951
Soil temperature now
2-inch depth
75°F 55°F or warmer
24-hour average · latest 77°F, as of Oct 17, 7:00 PM CDT
Measured at TexMesonet (TWDB) station Wegenhoft, 11 mi away. Daily averages: Thu 81°, Fri 78°.
4-inch depth
76°F 55°F or warmer
24-hour average · latest 77°F, as of Oct 17, 7:00 PM CDT
Measured at TexMesonet (TWDB) station Wegenhoft, 11 mi away. Daily averages: Thu 81°, Fri 79°.
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 | 48° | Partly Cloudy | |
| Sunday | 75° | 52° | Sunny |
| Monday | 80° | 57° | Mostly Sunny |
| Tuesday | 84° | 59° | Sunny |
| Wednesday | 88° | 58° | Sunny |
| Thursday | 90° | 59° | Sunny |
| Friday | 91° | 62° | Sunny |
National Weather Service forecast, issued Oct 17, 8:29 PM CDT. Frost can form above 32°F on clear, calm nights. Full NWS forecast.
Free frost alerts for 78951
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: Hallettsville 2 N, TX (NOAA GHCN-Daily ID USC00413873), elevation 275 ft, 12.1 miles from the ZIP's center point. NOAA completeness flag: S (standard, 24+ years).
Nearby stations
| Station | Distance | Last frost (50%) | First frost (50%) |
|---|---|---|---|
| Flatonia 4SE, TX | 14 mi | Mar 2 | Nov 27 |
| Columbus, TX | 17 mi | Mar 9 | Nov 20 |
| La Grange, TX | 21 mi | Mar 4 | Nov 25 |
The average last-frost dates of these stations span 23 days, a rough guide to local variation. See data sources & methods.
Questions
When is the last frost in 78951?
The average (50% chance) last spring freeze of 32°F for ZIP 78951 is February 17. For a safer planting date, use March 13, when only 1 year in 10 still sees a later freeze.
When is the first frost in 78951?
The average first fall freeze is December 4. In 1 year in 10 it comes by November 14.
What hardiness zone is 78951?
ZIP 78951 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 Colorado County
77412 77434 77442 77460 77470 77475 78933 78934 78935 78943 78962 All Colorado County ZIPs