Castle Hills, TX Weather & Growing Conditions
Overnight
55°F
Clear
Clear, with a low around 55. North wind around 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 55°F | Clear | 5 mph N | 0% |
| Wednesday | 75°F | Sunny | 0 to 5 mph NNE | 0% |
| Wednesday Night | 55°F | Clear | 0 mph | 0% |
| Thursday | 79°F | Sunny | 0 to 5 mph SSE | 0% |
| Thursday Night | 59°F | Partly Cloudy | 0 to 20 mph N | 1% |
| Friday | 74°F | Sunny | 5 to 15 mph N | 0% |
| Friday Night | 55°F | Partly Cloudy | 5 to 15 mph NNE | 0% |
| Saturday | 68°F | Partly Sunny then Slight Chance Rain Showers | 10 to 15 mph NNE | 18% |
| Saturday Night | 53°F | Chance Rain Showers | 5 to 15 mph NNE | 29% |
| Sunday | 67°F | Slight Chance Rain Showers then Partly Sunny | 5 to 10 mph NNE | 15% |
| Sunday Night | 49°F | Partly Cloudy | 0 to 5 mph N | 5% |
| Monday | 69°F | Sunny | 0 to 5 mph ENE | 5% |
| Monday Night | 50°F | Partly Cloudy | 0 mph | 3% |
| Tuesday | 71°F | Mostly Sunny | 0 to 5 mph ESE | 5% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Castle Hills, TX
Last spring frost
Feb 26
First fall frost
Nov 28
Growing season
277 days
Hardiness zone
9a
Explore more for Castle Hills, TX: full frost dates · planting calendar · Texas frost dates
Climate data from the nearest NOAA station, San Antonio Intl Ap, Tx (3 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.