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

Another Arctic Blast in the East; Eastern U.S. Winter Storm

A powerful Arctic blast will bring dangerously cold, record low temperatures to the upper Ohio Valley, Mid-Atlantic, Gulf Coast and Southeast U.S. this weekend. A rapidly deepening storm will produce widespread heavy snow and wind from the southern Appalachians across the Carolinas and southern Virginia into Sunday. Storm-force winds and coastal flooding will be possible along the East Coast. Read More >

Hazardous Weather Conditions

Current conditions at

San Marcos, San Marcos Municipal Airport (KHYI)

Lat: 29.89°NLon: 97.86°WElev: 597ft.

Fair

52°F

11°C

Humidity 38%
Wind Speed N 12 mph
Barometer 30.37 in (1028.3 mb)
Dewpoint 27°F (-3°C)
Visibility 10.00 mi
Wind Chill48°F (9°C)
Last update 30 Jan 12:56 pm CST
Extended Forecast for

Lockhart TX

Cold Weather Advisory January 31, 03:00am until January 31, 10:00am
Click here for hazard details and duration
Cold Weather Advisory

  • This Afternoon

    This Afternoon: Mostly cloudy, with a high near 55. North wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 55 °F

    Mostly Cloudy

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming clear, with a low around 28. North northeast wind 5 to 15 mph, with gusts as high as 20 mph.

    Low: 28 °F

    Decreasing
    Clouds

  • Saturday

    Saturday: Sunny, with a high near 45. North northeast wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 45 °F

    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 22. North northeast wind around 5 mph becoming calm in the evening.

    Low: 22 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 58. Calm wind becoming south southwest around 5 mph in the afternoon.

    High: 58 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 35. South southwest wind around 5 mph.

    Low: 35 °F

    Partly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 67. South southwest wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 67 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 54. South wind around 10 mph.

    Low: 54 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 72. South southwest wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 72 °F

    Mostly Cloudy

Detailed Forecast

This Afternoon
Mostly cloudy, with a high near 55. North wind 10 to 15 mph, with gusts as high as 20 mph.
Tonight
Mostly cloudy, then gradually becoming clear, with a low around 28. North northeast wind 5 to 15 mph, with gusts as high as 20 mph.
Saturday
Sunny, with a high near 45. North northeast wind 10 to 15 mph, with gusts as high as 25 mph.
Saturday Night
Clear, with a low around 22. North northeast wind around 5 mph becoming calm in the evening.
Sunday
Sunny, with a high near 58. Calm wind becoming south southwest around 5 mph in the afternoon.
Sunday Night
Partly cloudy, with a low around 35. South southwest wind around 5 mph.
Monday
Partly sunny, with a high near 67. South southwest wind 5 to 10 mph, with gusts as high as 20 mph.
Monday Night
Mostly cloudy, with a low around 54. South wind around 10 mph.
Tuesday
Mostly cloudy, with a high near 72. South southwest wind 10 to 15 mph, with gusts as high as 20 mph.
Tuesday Night
A 30 percent chance of showers, mainly after midnight. Mostly cloudy, with a low around 47.
Wednesday
Mostly sunny, with a high near 66.
Wednesday Night
Mostly clear, with a low around 37.
Thursday
Sunny, with a high near 62.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Lockhart TX
 29.88°N 97.7°W (Elev. 564 ft)
Last Update:
12:48 pm CST Jan 30, 2026
Forecast Valid:
1pm CST Jan 30, 2026-6pm CST Feb 5, 2026
 
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