Prolonged Extreme Cold; Eastern U.S. Winter Storm
Another Arctic blast will surge south across the northern Plains Thursday night, crossing the Midwest and reaching the Gulf Coast Friday night. Confidence continues to increase for significant heavy snow across much of the Southern Appalachians, Carolinas, and southern Mid-Atlantic Friday into Sunday. Read More >
Current conditions at
San Marcos, San Marcos Municipal Airport (KHYI)
Lat: 29.89°NLon: 97.86°WElev: 597ft.
Fair
36°F
2°C
| Humidity | 82% |
| Wind Speed | NW 6 mph |
| Barometer | 30.30 in (1026.2 mb) |
| Dewpoint | 31°F (-1°C) |
| Visibility | 10.00 mi |
| Wind Chill | 31°F (-1°C) |
| Last update | 28 Jan 10:56 pm CST |
Extended Forecast for
4 Miles SSW San Marcos TX
Tonight
Low: 32 °F
Partly Cloudy
Thursday
High: 67 °F
Mostly Sunny
Thursday Night
Low: 36 °F
Mostly Cloudy
Friday
High: 56 °F
Partly Sunny
Friday Night
Low: 29 °F
Mostly Clear
Saturday
High: 44 °F
Sunny
Saturday Night
Low: 21 °F
Clear
Sunday
High: 52 °F
Sunny
Sunday Night
Low: 32 °F
Mostly Clear
Detailed Forecast
Tonight
Partly cloudy, with a low around 32. Calm wind.
Thursday
Mostly sunny, with a high near 67. Light southwest wind becoming south southwest 5 to 10 mph in the morning. Winds could gust as high as 20 mph.
Thursday Night
Mostly cloudy, with a low around 36. West wind 10 to 15 mph becoming north in the evening. Winds could gust as high as 25 mph.
Friday
Partly sunny, with a high near 56. North wind 10 to 15 mph, with gusts as high as 20 mph.
Friday Night
Mostly clear, with a low around 29. North wind 5 to 10 mph, with gusts as high as 20 mph.
Saturday
Sunny, with a high near 44. North northeast wind 10 to 15 mph, with gusts as high as 25 mph.
Saturday Night
Clear, with a low around 21. Northeast wind around 5 mph becoming calm in the evening.
Sunday
Sunny, with a high near 52. Calm wind becoming south around 5 mph in the morning.
Sunday Night
Mostly clear, with a low around 32. South wind around 5 mph becoming calm in the evening.
Monday
Mostly sunny, with a high near 62.
Monday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 47.
Tuesday
A 20 percent chance of showers. Mostly cloudy, with a high near 67.
Tuesday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 52.
Wednesday
A 40 percent chance of showers. Mostly cloudy, with a high near 64.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
4 Miles SSW San Marcos TX
29.83°N 97.94°W (Elev. 610 ft)
29.83°N 97.94°W (Elev. 610 ft)
10:32 pm CST Jan 28, 2026
11pm CST Jan 28, 2026-6pm CST Feb 4, 2026
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