Frost dates for ZIP 76631 (Bynum, 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, Hillsboro, TX (9 miles away).
- Average last spring frostMar 2150% chance of a 32°F freeze after this date
- Average first fall frostNov 1050% chance of a 32°F freeze by this date
- Growing season (frost-free)235 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) | Mar 2 |
| 50% (the "average" last frost) | Mar 21 |
| 10% (safe-side: only 1 year in 10 freezes later) | Apr 8 |
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) | Oct 28 |
| 50% (the "average" first frost) | Nov 10 |
| 90% (late: most years have frozen by now) | Nov 29 |
Light frost, freeze and hard freeze
| Threshold | Last spring (50%) | First fall (50%) |
|---|---|---|
| 36°F (light frost possible on clear, calm nights) | Apr 2 | Nov 3 |
| 32°F (freeze) | Mar 21 | Nov 10 |
| 28°F (hard freeze) | Mar 9 | Nov 22 |
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 Bynum
Soil temperature now
2-inch depth
68°F 55°F or warmer
24-hour average · latest 74°F, as of Oct 17, 7:00 PM CDT
Measured at TexMesonet (TWDB) station Aquilla Water Supply District, 13 mi away. Daily averages: Thu 82°, Fri 72°.
4-inch depth
69°F 55°F or warmer
24-hour average · latest 72°F, as of Oct 17, 7:00 PM CDT
Measured at TexMesonet (TWDB) station Aquilla Water Supply District, 13 mi away. Daily averages: Thu 80°, Fri 74°.
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 | 43° | Mostly Clear | |
| Sunday | 70° | 47° | Sunny |
| Monday | 76° | 53° | Sunny |
| Tuesday | 80° | 55° | Sunny |
| Wednesday | 84° | 58° | Sunny |
| Thursday | 87° | 60° | Sunny |
| Friday | 87° | 64° | Mostly 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 76631
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: Hillsboro, TX (NOAA GHCN-Daily ID USC00414182), elevation 550 ft, 8.6 miles from the ZIP's center point. NOAA completeness flag: S (standard, 24+ years).
Nearby stations
| Station | Distance | Last frost (50%) | First frost (50%) |
|---|---|---|---|
| Navarro Mills Dam, TX | 16 mi | Mar 13 | Nov 14 |
| Whitney Dam, TX | 26 mi | Mar 15 | Nov 14 |
| Bardwell Dam, TX | 27 mi | Mar 8 | Nov 21 |
The average last-frost dates of these stations span 13 days, a rough guide to local variation. See data sources & methods.
Questions
When is the last frost in 76631?
The average (50% chance) last spring freeze of 32°F for ZIP 76631 is March 21. For a safer planting date, use April 8, when only 1 year in 10 still sees a later freeze.
When is the first frost in 76631?
The average first fall freeze is November 10. In 1 year in 10 it comes by October 28.
What hardiness zone is 76631?
ZIP 76631 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 Hill County
76055 76621 76622 76627 76628 76636 76645 76648 76650 76660 76666 76673 76676 76692 All Hill County ZIPs