High-Impact and Far-Reaching Winter Storm Continues; Cold Expands and Persists

A major winter storm will shift its impacts into the Northeast U.S. with heavy snow through tonight while over the Mid-Atlantic, sleet and freezing rain will diminish. Extremely cold air behind the storm will prolong dangerous travel and infrastructure impacts. Sub-zero low temperatures are expected nearly every morning from the Northern Plains through the Ohio Valley and into the Northeast. Read More >

Current conditions at

San Marcos, San Marcos Municipal Airport (KHYI)

Lat: 29.89°NLon: 97.86°WElev: 597ft.

Overcast with Haze

25°F

-4°C

Humidity 81%
Wind Speed N 16 G 28 mph
Barometer 30.33 in (1027.7 mb)
Dewpoint 20°F (-7°C)
Visibility 3.00 mi
Wind Chill12°F (-11°C)
Last update 25 Jan 6:56 pm CST
Extended Forecast for

3 Miles WSW San Marcos TX

Extreme Cold Warning January 25, 07:42pm until January 26, 12:00pm
Click here for hazard details and duration
Extreme Cold Warning
  •  
    Extreme Cold Warning January 25, 07:42pm until January 26, 12:00pm

    NOW until 12:00pm Mon

    Extreme Cold Warning

  • Tonight

    Low: 17 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 35. North wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 35 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 14. North wind around 5 mph becoming calm  in the evening.

    Low: 14 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 45. Calm wind becoming south southwest around 5 mph in the afternoon.

    High: 45 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 24. Calm wind becoming west northwest around 5 mph after midnight.

    Low: 24 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 50. North wind around 5 mph.

    High: 50 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 26. North wind around 5 mph becoming calm.

    Low: 26 °F

    Partly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 53. Calm wind becoming south southeast around 5 mph in the morning.

    High: 53 °F

    Partly Sunny

Detailed Forecast

Tonight
Mostly clear, with a low around 17. North wind 10 to 15 mph, with gusts as high as 25 mph.
Monday
Sunny, with a high near 35. North wind 5 to 10 mph, with gusts as high as 20 mph.
Monday Night
Mostly clear, with a low around 14. North wind around 5 mph becoming calm in the evening.
Tuesday
Mostly sunny, with a high near 45. Calm wind becoming south southwest around 5 mph in the afternoon.
Tuesday Night
Mostly clear, with a low around 24. Calm wind becoming west northwest around 5 mph after midnight.
Wednesday
Sunny, with a high near 50. North wind around 5 mph.
Wednesday Night
Partly cloudy, with a low around 26. North wind around 5 mph becoming calm.
Thursday
Partly sunny, with a high near 53. Calm wind becoming south southeast around 5 mph in the morning.
Thursday Night
A 20 percent chance of showers after midnight. Mostly cloudy, with a low around 37. Southeast wind around 5 mph becoming north after midnight.
Friday
A 30 percent chance of showers. Mostly cloudy, with a high near 49.
Friday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 25.
Saturday
Mostly sunny, with a high near 43.
Saturday Night
Mostly clear, with a low around 22.
Sunday
Sunny, with a high near 51.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles WSW San Marcos TX
 29.86°N 97.97°W (Elev. 646 ft)
7:00 pm CST Jan 25, 2026
7pm CST Jan 25, 2026-6pm CST Feb 1, 2026
 
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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