Santa Cruz, TX Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Santa Cruz, a community in Starr County, Texas.
Today
102°F
Sunny
Sunny, with a high near 102. Heat index values as high as 111. East southeast wind 2 to 6 mph.
7-day forecast for Santa Cruz
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 102°F | Sunny | 2 to 6 mph ESE | 0% |
| Tonight | 78°F | Mostly Clear | 2 to 9 mph ESE | 0% |
| Sunday | 103°F | Mostly Sunny | 5 mph ESE | 1% |
| Sunday Night | 78°F | Partly Cloudy | 2 to 8 mph ESE | 0% |
| Monday | 102°F | Sunny | 1 to 7 mph ESE | 13% |
| Monday Night | 78°F | Mostly Clear | 1 to 10 mph ESE | 13% |
| Tuesday | 100°F | Sunny then Chance Showers And Thunderstorms | 1 to 8 mph E | 31% |
| Tuesday Night | 78°F | Chance Showers And Thunderstorms then Mostly Clear | 0 to 9 mph E | 31% |
| Wednesday | 100°F | Chance Showers And Thunderstorms | 0 to 8 mph ENE | 45% |
| Wednesday Night | 78°F | Chance Showers And Thunderstorms | 0 to 8 mph NE | 45% |
| Thursday | 98°F | Chance Rain Showers | 1 to 7 mph ENE | 49% |
| Thursday Night | 77°F | Chance Showers And Thunderstorms | 0 to 7 mph ENE | 49% |
| Friday | 100°F | Chance Rain Showers | 1 to 8 mph ENE | 32% |
| Friday Night | 76°F | Chance Showers And Thunderstorms | 1 to 8 mph ENE | 32% |
Forecast source: National Weather Service (api.weather.gov) for Santa Cruz (26.354, -98.768). Updated through the day.
Growing snapshot for Santa Cruz
Last spring frost
Jan 31
First fall frost
Dec 17
Growing season
321 days
Hardiness zone
9b
More local growing data for Santa Cruz: nearby ZIP 78547 weather · frost dates · planting calendar · Texas frost dates
Nearby towns & communities
Airport Heights
Alto Bonito Heights
Amada Acres
Anacua
B and E
Barrera
Benjamin Perez
Buena Vista
Camargito
Campo Verde
Casa Blanca
Casas
Chaparrito
Chapeno
Delmita
E. Lopez
East Alto Bonito
El Brazil
El Castillo
El Cenizo
El Chaparral
El Mesquite
El Quiote
El Rancho Vela
El Refugio
El Socio
Escobares
Eugenio Saenz
Evergreen
Falcon Heights
Climate data from the nearest NOAA station, Rio Grande City, Tx (8.7 mi from Santa Cruz). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.