Frost dates for ZIP 77440 (Matagorda 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, Bay City Wtr Wks, TX (12 miles away).
- Average last spring frostFeb 2050% chance of a 32°F freeze after this date
- Average first fall frostDec 350% chance of a 32°F freeze by this date
- Growing season (frost-free)290 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 19 |
| 50% (the "average" last frost) | Feb 20 |
| 10% (safe-side: only 1 year in 10 freezes later) | Mar 15 |
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 10 |
| 50% (the "average" first frost) | Dec 3 |
| 90% (late: most years have frozen by now) | Jan 1 (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 7 | Nov 20 |
| 32°F (freeze) | Feb 20 | Dec 3 |
| 28°F (hard freeze) | Jan 31 | Dec 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 77440
Soil temperature now
2-inch depth
75°F 55°F or warmer
24-hour average · latest 77°F, as of Oct 17, 7:00 PM CDT
Estimate Not a measurement at this ZIP: distance-weighted average of Wied Ranch (42 mi), Bobadoo Ranch (49 mi), STXRR Camp Williams (54 mi).
4-inch depth
76°F 55°F or warmer
24-hour average · latest 78°F, as of Oct 17, 7:00 PM CDT
Estimate Not a measurement at this ZIP: distance-weighted average of Wied Ranch (42 mi), Bobadoo Ranch (49 mi), STXRR Camp Williams (54 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 | 52° | Partly Cloudy | |
| Sunday | 76° | 56° | Sunny |
| Monday | 81° | 60° | Mostly Sunny |
| Tuesday | 84° | 61° | Mostly Sunny |
| Wednesday | 87° | 60° | Sunny |
| Thursday | 88° | 61° | Sunny |
| Friday | 88° | 64° | 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 77440
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: Bay City Wtr Wks, TX (NOAA GHCN-Daily ID USC00410569), elevation 52 ft, 12.0 miles from the ZIP's center point. NOAA completeness flag: R (representative, 10+ years).
Nearby stations
| Station | Distance | Last frost (50%) | First frost (50%) |
|---|---|---|---|
| Danevang 1 W, TX | 13 mi | Feb 15 | Dec 8 |
| Palacios Muni AP, TX | 13 mi | Feb 1 | Dec 17 |
| Matagorda No 2, TX | 18 mi | Feb 5 | Dec 16 |
The average last-frost dates of these stations span 19 days, a rough guide to local variation. See data sources & methods.
Questions
When is the last frost in 77440?
The average (50% chance) last spring freeze of 32°F for ZIP 77440 is February 20. For a safer planting date, use March 15, when only 1 year in 10 still sees a later freeze.
When is the first frost in 77440?
The average first fall freeze is December 3. In 1 year in 10 it comes by November 10.
What hardiness zone is 77440?
ZIP 77440 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 Matagorda County
77414 77415 77419 77428 77456 77457 77458 77465 77468 77482 77483 All Matagorda County ZIPs