Frost dates for ZIP 79121 (Amarillo, 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, Bushland 1 WSW, TX (9 miles away).
- Average last spring frostApr 2250% chance of a 32°F freeze after this date
- Average first fall frostOct 2150% chance of a 32°F freeze by this date
- Growing season (frost-free)182 daysmedian, 32°F threshold
- USDA hardiness zone7a0 to 5°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) | Apr 10 |
| 50% (the "average" last frost) | Apr 22 |
| 10% (safe-side: only 1 year in 10 freezes later) | May 3 |
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 6 |
| 50% (the "average" first frost) | Oct 21 |
| 90% (late: most years have frozen by now) | Nov 1 |
Light frost, freeze and hard freeze
| Threshold | Last spring (50%) | First fall (50%) |
|---|---|---|
| 36°F (light frost possible on clear, calm nights) | May 2 | Oct 13 |
| 32°F (freeze) | Apr 22 | Oct 21 |
| 28°F (hard freeze) | Apr 12 | Oct 31 |
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 Amarillo
Soil temperature now
2-inch depth
54°F 50–55°F
24-hour average · latest 58°F, as of Oct 17, 8:00 PM CDT
Measured at USDA NRCS SCAN station Bushland #1, 9 mi away. Daily averages: Thu 63°, Fri 57°.
4-inch depth
58°F 55°F or warmer
24-hour average · latest 60°F, as of Oct 17, 8:00 PM CDT
Measured at USDA NRCS SCAN station Bushland #1, 9 mi away. Daily averages: Thu 66°, Fri 61°.
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 | 39° | Mostly Clear | |
| Sunday | 65° | 49° | Sunny |
| Monday | 71° | 53° | Sunny |
| Tuesday | 73° | 57° | Sunny |
| Wednesday | 78° | 59° | Mostly Sunny |
| Thursday | 77° | 60° | Partly Sunny |
| Friday | 75° | 59° | Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms |
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 79121
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: Bushland 1 WSW, TX (NOAA GHCN-Daily ID USC00411267), elevation 3,819 ft, 8.5 miles from the ZIP's center point. NOAA completeness flag: R (representative, 10+ years).
Nearby stations
| Station | Distance | Last frost (50%) | First frost (50%) |
|---|---|---|---|
| Amarillo 7ENE, TX | 13 mi | Apr 15 | Oct 29 |
| Amarillo, TX | 13 mi | Apr 13 | Oct 27 |
| Canyon, TX | 13 mi | Apr 15 | Oct 25 |
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 79121?
The average (50% chance) last spring freeze of 32°F for ZIP 79121 is April 22. For a safer planting date, use May 3, when only 1 year in 10 still sees a later freeze.
When is the first frost in 79121?
The average first fall freeze is October 21. In 1 year in 10 it comes by October 6.
What hardiness zone is 79121?
ZIP 79121 is in USDA zone 7a (0 to 5°F average coldest winter night), per the 2023 USDA Plant Hardiness Zone Map ZIP listing.
Other ZIP codes in Randall County
79012 79015 79016 79042 79091 79109 79110 79118 79119 All Randall County ZIPs