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Will it freeze in Crystal City in the next 7 nights?
No overnight lows at or below 32°F are forecast in Crystal City during the next 7 nights in the available NWS frost forecast.
Tonight: forecast low 60°F. Above 36°F.
NWS forecast period: Thu, Nov 5, 6:00 PM CST to Fri, Nov 6, 6:00 AM CST.
No nights at or below 36°F in the National Weather Service forecast for the next 7 nights.
- Tonight 60°F Above 36°F · Partly Cloudy
- Fri, Nov 6 58°F Above 36°F · Partly Cloudy
- Sat, Nov 7 55°F Above 36°F · Showers And Thunderstorms
- Sun, Nov 8 52°F Above 36°F · Chance Rain Showers
- Mon, Nov 9 52°F Above 36°F · Partly Cloudy
- Tue, Nov 10 54°F Above 36°F · Partly Cloudy
- Wed, Nov 11 55°F Above 36°F · Mostly Cloudy
Overnight lows from the National Weather Service forecast for this location. This covers the available forecast window, not the first freeze of the whole season. Frost can form above 32°F on clear, calm nights.
Frost and freeze probabilities
Freeze dates shift from year to year. Spring percentages describe the chance of a freeze after the stated date; fall percentages describe the chance of a freeze by that date. The 10% spring date is the cautious one: a later freeze happens about 1 year in 10.
These dates describe historical probabilities, not this year’s forecast or the earliest and latest possible freezes. Different weather stations or probability thresholds can produce different published dates for the same city.
Average first hard freeze in Crystal City
The median first fall hard-freeze date (28°F) is December 26, from NOAA’s 1991–2020 Climate Normals at Crystal City. This is the 50% probability date, not a forecast for this year.
| Temperature | Last spring date 90% · 50% · 10% chance of a later freeze | First fall date 10% · 50% · 90% chance of an earlier freeze | Season |
|---|---|---|---|
| 36°F frost possible | Feb 2 · Feb 28 · Mar 18 | Nov 8 · Nov 28 · Dec 19 | 275 days |
| 32°F freeze | Jan 6 · Feb 10 · Mar 9 | Nov 19 · Dec 10 · Jan 9 | 307 days |
| 28°F hard freeze | Dec 15 · Jan 20 · Feb 28 | Dec 1 · Dec 26 · Feb 6 | 346 days |
Average high temperature by month
1991–2020 normals at Crystal City
Average low temperature by month
Months with lows near or below freezing carry frost risk
Where these frost dates come from
The frost dates for Crystal City, TX come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Crystal City (station USC00412160, elevation 580 ft), 0.8 mi from Crystal City. Local conditions (valleys, hilltops, distance to water, city heat) can shift frost dates by days or weeks. The hardiness zone is from the 2023 USDA Plant Hardiness Zone Map (USDA ARS and Oregon State University PRISM). See our methodology.
Frost dates near Crystal City
| City | Distance | Last spring frost | First fall frost |
|---|---|---|---|
| Uvalde, TX | 37 mi | Mar 12 | Nov 14 |
| Eagle Pass, TX | 39 mi | Feb 19 | Dec 1 |
| Pearsall, TX | 47 mi | Feb 16 | Dec 6 |
| Hondo, TX | 61 mi | Mar 6 | Nov 20 |
| Del Rio, TX | 80 mi | Feb 16 | Dec 3 |
| Laredo, TX | 81 mi | Jan 25 | Dec 17 |
| Pleasanton, TX | 83 mi | Feb 27 | Nov 28 |
| Leon Valley, TX | 92 mi | Feb 18 | Dec 9 |
| Sandy Oaks, TX | 92 mi | Feb 20 | Dec 3 |
| Helotes, TX | 93 mi | Feb 18 | Dec 9 |
Frequently asked questions
When is the last frost in Crystal City?
On average, the last spring frost (32°F) in Crystal City is around February 10. In about 1 year in 10 it comes after March 9, and in 9 years in 10 it comes after January 6.
When is the first frost in Crystal City?
The first fall frost (32°F) usually arrives around December 10. There’s a 10% chance of a freeze by November 19 and a 90% chance by January 9.
Can it frost in Crystal City after the last frost date?
Yes. Frost can form on clear, calm nights even when the air stays above 32°F. Temperatures of 36°F or lower, cold enough for frost on exposed plants, have a 50% chance of occurring after February 28.
What growing zone is Crystal City?
Crystal City is in USDA Plant Hardiness Zone 9a (average annual extreme minimum temperature 20 to 25°F), based on the 2023 USDA map for ZIP code 78839. See growing zones in Texas.
More: all Texas frost dates · Texas growing zones · frost vs. freeze