Frost dates for ZIP 78632 (Harwood, 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, Luling, TX (11 miles away).
- Average last spring frostMar 550% chance of a 32°F freeze after this date
- Average first fall frostNov 2350% chance of a 32°F freeze by this date
- Growing season (frost-free)263 daysmedian, 32°F threshold
- USDA hardiness zone9a20 to 25°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) | Feb 7 |
| 50% (the "average" last frost) | Mar 5 |
| 10% (safe-side: only 1 year in 10 freezes later) | Apr 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) | Nov 3 |
| 50% (the "average" first frost) | Nov 23 |
| 90% (late: most years have frozen by now) | Dec 14 |
Light frost, freeze and hard freeze
| Threshold | Last spring (50%) | First fall (50%) |
|---|---|---|
| 36°F (light frost possible on clear, calm nights) | Mar 22 | Nov 10 |
| 32°F (freeze) | Mar 5 | Nov 23 |
| 28°F (hard freeze) | Feb 17 | Dec 6 |
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 Harwood
Soil temperature now
2-inch depth
74°F 55°F or warmer
24-hour average · latest 76°F, as of Oct 17, 7:00 PM CDT
Estimate Not a measurement at this ZIP: distance-weighted average of Baker Ranch (22 mi), Grones Ranch (26 mi), Pennell Cattle Co (31 mi).
4-inch depth
76°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 Baker Ranch (22 mi), Grones Ranch (26 mi), Pennell Cattle Co (31 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 | 46° | Partly Cloudy | |
| Sunday | 74° | 51° | Sunny |
| Monday | 79° | 56° | Mostly Sunny |
| Tuesday | 83° | 58° | Sunny |
| Wednesday | 87° | 57° | Sunny |
| Thursday | 89° | 59° | Sunny |
| Friday | 89° | 61° | 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 78632
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: Luling, TX (NOAA GHCN-Daily ID USC00415429), elevation 400 ft, 11.2 miles from the ZIP's center point. NOAA completeness flag: S (standard, 24+ years).
Nearby stations
| Station | Distance | Last frost (50%) | First frost (50%) |
|---|---|---|---|
| Gonzales 2S, TX | 15 mi | Feb 26 | Nov 28 |
| Cedar Creek 5 S, TX | 23 mi | Mar 14 | Nov 19 |
| Flatonia 4SE, TX | 25 mi | Mar 2 | Nov 27 |
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 78632?
The average (50% chance) last spring freeze of 32°F for ZIP 78632 is March 5. For a safer planting date, use April 3, when only 1 year in 10 still sees a later freeze.
When is the first frost in 78632?
The average first fall freeze is November 23. In 1 year in 10 it comes by November 3.
What hardiness zone is 78632?
ZIP 78632 is in USDA zone 9a (20 to 25°F average coldest winter night), per the 2023 USDA Plant Hardiness Zone Map ZIP listing.
Other ZIP codes in Gonzales County
78122 78140 78159 78614 78629 78658 78677 78959 All Gonzales County ZIPs