Frost dates for ZIP 76573 (Williamson 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, Granger Dam, TX (13 miles away).
- Average last spring frostMar 550% chance of a 32°F freeze after this date
- Average first fall frostNov 2250% chance of a 32°F freeze by this date
- Growing season (frost-free)261 daysmedian, 32°F threshold
- USDA hardiness zone8b15 to 20°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) | Feb 13 |
| 50% (the "average" last frost) | Mar 5 |
| 10% (safe-side: only 1 year in 10 freezes later) | Mar 31 |
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 4 |
| 50% (the "average" first frost) | Nov 22 |
| 90% (late: most years have frozen by now) | Dec 11 |
Light frost, freeze and hard freeze
| Threshold | Last spring (50%) | First fall (50%) |
|---|---|---|
| 36°F (light frost possible on clear, calm nights) | Mar 20 | Nov 11 |
| 32°F (freeze) | Mar 5 | Nov 22 |
| 28°F (hard freeze) | Feb 20 | Dec 6 |
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 76573
Soil temperature now
2-inch depth
70°F 55°F or warmer
24-hour average · latest 71°F, as of Oct 17, 7:00 PM CDT
Measured at TexMesonet (TWDB) station Doc Curb Pump Station, 12 mi away. Daily averages: Thu 78°, Fri 74°.
4-inch depth
72°F 55°F or warmer
24-hour average · latest 72°F, as of Oct 17, 7:00 PM CDT
Measured at TexMesonet (TWDB) station Doc Curb Pump Station, 12 mi away. Daily averages: Thu 78°, Fri 76°.
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 | 47° | Mostly Clear | |
| Sunday | 72° | 49° | Sunny |
| Monday | 77° | 54° | Mostly Sunny |
| Tuesday | 81° | 56° | Sunny |
| Wednesday | 84° | 57° | Sunny |
| Thursday | 87° | 59° | Sunny |
| Friday | 87° | 61° | 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 76573
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: Granger Dam, TX (NOAA GHCN-Daily ID USC00413686), elevation 555 ft, 12.8 miles from the ZIP's center point. NOAA completeness flag: R (representative, 10+ years).
Nearby stations
| Station | Distance | Last frost (50%) | First frost (50%) |
|---|---|---|---|
| Stillhouse Hollow Dam, TX | 15 mi | Mar 14 | Nov 20 |
| Georgetown Lake, TX | 16 mi | Mar 6 | Nov 24 |
| Taylor 1NW, TX | 17 mi | Mar 8 | Nov 21 |
The average last-frost dates of these stations span 9 days, a rough guide to local variation. See data sources & methods.
Questions
When is the last frost in 76573?
The average (50% chance) last spring freeze of 32°F for ZIP 76573 is March 5. For a safer planting date, use March 31, when only 1 year in 10 still sees a later freeze.
When is the first frost in 76573?
The average first fall freeze is November 22. In 1 year in 10 it comes by November 4.
What hardiness zone is 76573?
ZIP 76573 is in USDA zone 8b (15 to 20°F average coldest winter night), per the 2023 USDA Plant Hardiness Zone Map ZIP listing.
Other ZIP codes in Williamson County
76527 76530 76537 76574 76578 78613 78615 78626 78628 78633 78634 78642 78664 78665 78674 78681 78717 78729 All Williamson County ZIPs