Frost dates for ZIP 78011 (Charlotte, 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, Charlotte 5 NNW, TX (8 miles away).
- Average last spring frostFeb 2650% chance of a 32°F freeze after this date
- Average first fall frostNov 2850% chance of a 32°F freeze by this date
- Growing season (frost-free)278 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) | Jan 27 |
| 50% (the "average" last frost) | Feb 26 |
| 10% (safe-side: only 1 year in 10 freezes later) | Mar 17 |
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 6 |
| 50% (the "average" first frost) | Nov 28 |
| 90% (late: most years have frozen by now) | Dec 26 |
Light frost, freeze and hard freeze
| Threshold | Last spring (50%) | First fall (50%) |
|---|---|---|
| 36°F (light frost possible on clear, calm nights) | Mar 10 | Nov 15 |
| 32°F (freeze) | Feb 26 | Nov 28 |
| 28°F (hard freeze) | Feb 6 | Dec 10 |
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 Charlotte
Soil temperature now
2-inch depth
72°F 55°F or warmer
24-hour average · latest 74°F, as of Oct 17, 7:00 PM CDT
Estimate Not a measurement at this ZIP: distance-weighted average of Y Bar Ranch West (19 mi), Three Oaks (38 mi), Great Horizon Ranch (49 mi).
4-inch depth
75°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 Y Bar Ranch West (19 mi), Three Oaks (38 mi), Great Horizon Ranch (49 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 | 47° | Mostly Clear | |
| Sunday | 74° | 54° | Mostly Sunny |
| Monday | 79° | 60° | Mostly Sunny |
| Tuesday | 85° | 61° | Mostly Sunny |
| Wednesday | 87° | 61° | Mostly Sunny |
| Thursday | 89° | 61° | Sunny |
| Friday | 90° | 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 78011
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: Charlotte 5 NNW, TX (NOAA GHCN-Daily ID USC00411663), elevation 441 ft, 8.0 miles from the ZIP's center point. NOAA completeness flag: R (representative, 10+ years).
Nearby stations
| Station | Distance | Last frost (50%) | First frost (50%) |
|---|---|---|---|
| Poteet, TX | 18 mi | Feb 22 | Dec 1 |
| Cross, TX | 18 mi | Mar 8 | Nov 17 |
| Pleasanton, TX | 18 mi | Feb 27 | Nov 28 |
The average last-frost dates of these stations span 17 days, a rough guide to local variation. See data sources & methods.
Questions
When is the last frost in 78011?
The average (50% chance) last spring freeze of 32°F for ZIP 78011 is February 26. For a safer planting date, use March 17, when only 1 year in 10 still sees a later freeze.
When is the first frost in 78011?
The average first fall freeze is November 28. In 1 year in 10 it comes by November 6.
What hardiness zone is 78011?
ZIP 78011 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 Atascosa County
78008 78012 78026 78050 78052 78062 78064 78065 78069 All Atascosa County ZIPs