Frost dates for ZIP 78045 (Laredo, 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, Encinal, TX (21 miles away).
- Average last spring frostFeb 2150% chance of a 32°F freeze after this date
- Average first fall frostDec 950% chance of a 32°F freeze by this date
- Growing season (frost-free)296 daysmedian, 32°F threshold
- USDA hardiness zone9b25 to 30°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 16 |
| 50% (the "average" last frost) | Feb 21 |
| 10% (safe-side: only 1 year in 10 freezes later) | Mar 16 |
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 21 |
| 50% (the "average" first frost) | Dec 9 |
| 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 6 | Nov 26 |
| 32°F (freeze) | Feb 21 | Dec 9 |
| 28°F (hard freeze) | Jan 31 | 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 Laredo
Soil temperature now
2-inch depth
78°F 55°F or warmer
24-hour average · latest 83°F, as of Oct 17, 7:00 PM CDT
Estimate Not a measurement at this ZIP: distance-weighted average of Chaparral WMA (37 mi), Great Horizon Ranch (50 mi).
4-inch depth
80°F 55°F or warmer
24-hour average · latest 84°F, as of Oct 17, 7:00 PM CDT
Estimate Not a measurement at this ZIP: distance-weighted average of Chaparral WMA (37 mi), Great Horizon Ranch (50 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 | 49° | Partly Cloudy | |
| Sunday | 74° | 57° | Mostly Sunny |
| Monday | 82° | 64° | Partly Sunny |
| Tuesday | 88° | 66° | Mostly Sunny |
| Wednesday | 89° | 67° | Mostly Sunny then Slight Chance Rain Showers |
| Thursday | 91° | 67° | Sunny |
| Friday | 92° | 69° | 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 78045
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: Encinal, TX (NOAA GHCN-Daily ID USC00412906), elevation 545 ft, 20.6 miles from the ZIP's center point. NOAA completeness flag: R (representative, 10+ years).
Nearby stations
| Station | Distance | Last frost (50%) | First frost (50%) |
|---|---|---|---|
| Laredo 2, TX | 21 mi | Jan 25 | Dec 17 |
| Laredo AFB, TX | 25 mi | Jan 20 | Dec 25 |
| Carrizo Springs 3S, TX | 47 mi | Mar 5 | Nov 22 |
The average last-frost dates of these stations span 47 days, a rough guide to local variation. See data sources & methods.
Questions
When is the last frost in 78045?
The average (50% chance) last spring freeze of 32°F for ZIP 78045 is February 21. For a safer planting date, use March 16, when only 1 year in 10 still sees a later freeze.
When is the first frost in 78045?
The average first fall freeze is December 9. In 1 year in 10 it comes by November 21.
What hardiness zone is 78045?
ZIP 78045 is in USDA zone 9b (25 to 30°F average coldest winter night), per the 2023 USDA Plant Hardiness Zone Map ZIP listing.
Other ZIP codes in Webb County
78019 78040 78041 78043 78044 78046 78344 78369 78371 All Webb County ZIPs