National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Prolonged Atmospheric River in the Northwest; Snow in the North-Central US

A prolonged atmospheric river will bring heavy rainfall which may lead to widespread urban and river flooding, heavy mountain snow, along with gusty winds to the Pacific Northwest into the northern Rockies through much of the week. A clipper will bring a period of snow across the upper Midwest and the Great Lakes into Tuesday, before a stronger system bring more wintry impacts. Read More >

Hazardous Weather Conditions

Current conditions at

San Antonio, San Antonio International Airport (KSAT)

Lat: 29.53°NLon: 98.46°WElev: 807ft.

Fair

36°F

2°C

Humidity 82%
Wind Speed NW 3 mph
Barometer 30.20 in (1022.0 mb)
Dewpoint 31°F (-1°C)
Visibility 10.00 mi
Last update 9 Dec 5:51 am CST
Extended Forecast for

Castle Hills TX

Freeze Warning until December 9, 09:00am
Click here for hazard details and duration
...
  •  
    Freeze Warning until December 9, 09:00am

    NOW until 9:00am Tue

    Freeze Warning

  • Today

    High: 66 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 46. South southwest wind around 5 mph.

    Low: 46 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 74. West southwest wind around 5 mph becoming northeast in the afternoon.

    High: 74 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 47. North northeast wind around 5 mph.

    Low: 47 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 70. North northeast wind around 5 mph becoming south in the afternoon.

    High: 70 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 54. South southwest wind around 5 mph.

    Low: 54 °F

    Partly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 75. South southwest wind around 5 mph becoming east southeast in the afternoon.

    High: 75 °F

    Partly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 59. East wind around 5 mph.

    Low: 59 °F

    Partly Cloudy

Detailed Forecast

Today
Sunny, with a high near 66. Light and variable wind becoming south southwest 5 to 10 mph in the afternoon.
Tonight
Clear, with a low around 46. South southwest wind around 5 mph.
Wednesday
Sunny, with a high near 74. West southwest wind around 5 mph becoming northeast in the afternoon.
Wednesday Night
Mostly clear, with a low around 47. North northeast wind around 5 mph.
Thursday
Sunny, with a high near 70. North northeast wind around 5 mph becoming south in the afternoon.
Thursday Night
Partly cloudy, with a low around 54. South southwest wind around 5 mph.
Friday
Partly sunny, with a high near 75. South southwest wind around 5 mph becoming east southeast in the afternoon.
Friday Night
Partly cloudy, with a low around 59. East wind around 5 mph.
Saturday
Partly sunny, with a high near 76. East wind around 5 mph becoming south in the morning.
Saturday Night
Mostly cloudy, with a low around 57.
Sunday
Mostly cloudy, with a high near 65.
Sunday Night
Mostly cloudy, with a low around 51.
Monday
A 20 percent chance of showers. Mostly cloudy, with a high near 62.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Castle Hills TX
 29.53°N 98.51°W (Elev. 869 ft)
Last Update:
5:44 am CST Dec 9, 2025
Forecast Valid:
6am CST Dec 9, 2025-6pm CST Dec 15, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation