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 WNW San Marcos TX
Tonight
Low: 31 °F
Partly Cloudy
Thursday
High: 67 °F
Mostly Sunny
Thursday Night
Low: 35 °F
Mostly Cloudy
Friday
High: 55 °F
Decreasing
CloudsFriday Night
Low: 28 °F
Mostly Clear
Saturday
High: 43 °F
Sunny
Saturday Night
Low: 20 °F
Clear
Sunday
High: 51 °F
Sunny
Sunday Night
Low: 32 °F
Mostly Clear
Detailed Forecast
Tonight
Partly cloudy, with a low around 31. Calm wind becoming southwest around 5 mph.
Thursday
Mostly sunny, with a high near 67. Southwest wind 5 to 10 mph, with gusts as high as 20 mph.
Thursday Night
Mostly cloudy, with a low around 35. North wind 5 to 15 mph, with gusts as high as 20 mph.
Friday
Mostly cloudy, then gradually becoming sunny, with a high near 55. North wind 10 to 15 mph, with gusts as high as 20 mph.
Friday Night
Mostly clear, with a low around 28. North wind 5 to 10 mph, with gusts as high as 20 mph.
Saturday
Sunny, with a high near 43. North northeast wind 5 to 15 mph, with gusts as high as 20 mph.
Saturday Night
Clear, with a low around 20. Northeast wind around 5 mph becoming calm in the evening.
Sunday
Sunny, with a high near 51. 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 west southwest after midnight.
Monday
Mostly sunny, with a high near 61.
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 66.
Tuesday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 50.
Wednesday
A 40 percent chance of showers. Mostly cloudy, with a high near 63.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
4 Miles WNW San Marcos TX
29.9°N 97.99°W (Elev. 850 ft)
29.9°N 97.99°W (Elev. 850 ft)
10:32 pm CST Jan 28, 2026
11pm CST Jan 28, 2026-6pm CST Feb 4, 2026
Additional Resources
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