Frost dates for ZIP 75434 (Lamar 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, Cooper Dam, TX (16 miles away).
- Average last spring frostMar 1850% chance of a 32°F freeze after this date
- Average first fall frostNov 1350% chance of a 32°F freeze by this date
- Growing season (frost-free)241 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 1 |
| 50% (the "average" last frost) | Mar 18 |
| 10% (safe-side: only 1 year in 10 freezes later) | Apr 1 |
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 30 |
| 50% (the "average" first frost) | Nov 13 |
| 90% (late: most years have frozen by now) | Dec 1 |
Light frost, freeze and hard freeze
| Threshold | Last spring (50%) | First fall (50%) |
|---|---|---|
| 36°F (light frost possible on clear, calm nights) | Mar 30 | Nov 4 |
| 32°F (freeze) | Mar 18 | Nov 13 |
| 28°F (hard freeze) | Mar 6 | Nov 26 |
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 75434
Soil temperature now
2-inch depth
65°F 55°F or warmer
24-hour average · latest 68°F, as of Oct 17, 7:00 PM CDT
Estimate Not a measurement at this ZIP: distance-weighted average of Hooten (23 mi), Good Hope Ranch Station (25 mi), Lake Ralph Hall (34 mi).
4-inch depth
68°F 55°F or warmer
24-hour average · latest 70°F, as of Oct 17, 7:00 PM CDT
Estimate Not a measurement at this ZIP: distance-weighted average of Hooten (23 mi), Good Hope Ranch Station (25 mi), Lake Ralph Hall (34 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 | 42° | Clear | |
| Sunday | 71° | 45° | Sunny |
| Monday | 78° | 49° | Sunny |
| Tuesday | 81° | 51° | Sunny |
| Wednesday | 85° | 54° | Sunny |
| Thursday | 87° | 57° | Sunny |
| Friday | 88° | 60° | 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 75434
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: Cooper Dam, TX (NOAA GHCN-Daily ID USC00411968), elevation 463 ft, 16.4 miles from the ZIP's center point. NOAA completeness flag: R (representative, 10+ years).
Nearby stations
| Station | Distance | Last frost (50%) | First frost (50%) |
|---|---|---|---|
| Mt Vernon, TX | 17 mi | Mar 15 | Nov 16 |
| Clarksville 2NE, TX | 21 mi | Mar 20 | Nov 10 |
| Paris, TX | 22 mi | Mar 14 | Nov 16 |
The average last-frost dates of these stations span 6 days, a rough guide to local variation. See data sources & methods.
Questions
When is the last frost in 75434?
The average (50% chance) last spring freeze of 32°F for ZIP 75434 is March 18. For a safer planting date, use April 1, when only 1 year in 10 still sees a later freeze.
When is the first frost in 75434?
The average first fall freeze is November 13. In 1 year in 10 it comes by October 30.
What hardiness zone is 75434?
ZIP 75434 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 Lamar County
75411 75416 75421 75435 75460 75462 75468 75470 75473 75477 75486 All Lamar County ZIPs