Crystal City, TX Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Crystal City, a city in Zavala County, Texas.
Overnight
75°F
Partly Cloudy
Partly cloudy, with a low around 75. Southeast wind around 5 mph.
7-day forecast for Crystal City
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 75°F | Partly Cloudy | 5 mph SE | 4% |
| Saturday | 100°F | Sunny | 5 mph ESE | 3% |
| Saturday Night | 74°F | Mostly Clear | 5 to 10 mph SE | 1% |
| Sunday | 100°F | Mostly Sunny | 5 mph SE | 0% |
| Sunday Night | 75°F | Partly Cloudy | 5 to 10 mph SE | 8% |
| Monday | 101°F | Sunny | 5 mph ESE | 8% |
| Monday Night | 75°F | Mostly Clear | 5 mph ESE | 5% |
| Tuesday | 100°F | Sunny | 0 to 5 mph E | 7% |
| Tuesday Night | 74°F | Slight Chance Showers And Thunderstorms | 0 to 5 mph ESE | 17% |
| Wednesday | 100°F | Mostly Sunny | 0 to 10 mph E | 11% |
| Wednesday Night | 74°F | Partly Cloudy | 0 to 10 mph ESE | 14% |
| Thursday | 99°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 0 to 10 mph E | 15% |
| Thursday Night | 74°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 0 to 10 mph ESE | 15% |
| Friday | 98°F | Mostly Sunny | 0 to 5 mph E | 10% |
Forecast source: National Weather Service (api.weather.gov) for Crystal City (28.691, -99.827). Updated through the day.
Growing snapshot for Crystal City
Last spring frost
Feb 10
First fall frost
Dec 10
Growing season
307 days
Hardiness zone
9a
More local growing data for Crystal City: nearby ZIP 78839 weather · frost dates · planting calendar · Texas frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Crystal City, Tx (6 mi from Crystal City). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.