Casa Blanca, TX Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Casa Blanca, a community in Starr County, Texas.
Today
85°F
Sunny
Sunny, with a high near 85. Northeast wind around 6 mph.
7-day forecast for Casa Blanca
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 85°F | Sunny | 6 mph NE | 1% |
| Tonight | 66°F | Mostly Clear | 5 mph E | 2% |
| Thursday | 90°F | Mostly Sunny | 3 to 7 mph ESE | 4% |
| Thursday Night | 71°F | Showers And Thunderstorms Likely | 5 mph NNE | 72% |
| Friday | 83°F | Chance Rain Showers then Partly Sunny | 6 to 12 mph N | 36% |
| Friday Night | 65°F | Mostly Cloudy | 2 to 6 mph NNE | 4% |
| Saturday | 79°F | Partly Sunny then Slight Chance Rain Showers | 8 mph NNE | 20% |
| Saturday Night | 62°F | Chance Rain Showers | 5 to 13 mph NNE | 38% |
| Sunday | 73°F | Chance Rain Showers | 8 to 13 mph N | 36% |
| Sunday Night | 57°F | Mostly Cloudy | 2 to 7 mph N | 14% |
| Monday | 76°F | Mostly Sunny | 6 mph NNE | 5% |
| Monday Night | 57°F | Mostly Cloudy | 2 mph ENE | 3% |
| Tuesday | 80°F | Partly Sunny | 1 to 5 mph E | 2% |
| Tuesday Night | 61°F | Mostly Cloudy | 3 mph ESE | 1% |
Forecast source: National Weather Service (api.weather.gov) for Casa Blanca (26.298, -98.610). Updated through the day.
Growing snapshot for Casa Blanca
Last spring frost
Jan 31
First fall frost
Dec 17
Growing season
321 days
Hardiness zone
10a
More local growing data for Casa Blanca: nearby ZIP 78548 weather · frost dates · planting calendar · Texas frost dates
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Climate data from the nearest NOAA station, Rio Grande City, Tx (11.9 mi from Casa Blanca). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.