Great Lakes Snow through Friday; High Winds in the Northern and Central Plains
A clipper storm will drop south from Canada today bringing wintry weather from the Upper Midwest to the Great Lakes through Friday. This system is expected to bring strong northerly winds to much of the northern and central High Plains this afternoon through Friday, with gusts up to 60 mph expected. Read More >
Current conditions at
San Marcos, San Marcos Municipal Airport (KHYI)
Lat: 29.89°NLon: 97.86°WElev: 597ft.
Fair
52°F
11°C
| Humidity | 43% |
| Wind Speed | NE 13 mph |
| Barometer | 30.32 in (1026.8 mb) |
| Dewpoint | 30°F (-1°C) |
| Visibility | 10.00 mi |
| Wind Chill | 48°F (9°C) |
| Last update | 15 Jan 9:56 am CST |
Extended Forecast for
San Marcos TX
Today
High: 65 °F
Sunny
Tonight
Low: 44 °F
Clear
Friday
High: 72 °F
Sunny
Friday Night
Low: 42 °F
Mostly Clear
Saturday
High: 54 °F
Mostly Sunny
Saturday Night
Low: 30 °F
Mostly Clear
Sunday
High: 60 °F
Sunny
Sunday Night
Low: 38 °F
Mostly Clear
M.L.King Day
High: 63 °F
Mostly Sunny
Detailed Forecast
Today
Sunny, with a high near 65. North northeast wind around 5 mph becoming south in the afternoon.
Tonight
Clear, with a low around 44. South southwest wind 5 to 10 mph.
Friday
Sunny, with a high near 72. Southwest wind around 10 mph becoming north in the afternoon. Winds could gust as high as 20 mph.
Friday Night
Mostly clear, with a low around 42. North northeast wind around 10 mph, with gusts as high as 20 mph.
Saturday
Mostly sunny, with a high near 54. North northeast wind around 10 mph, with gusts as high as 20 mph.
Saturday Night
Mostly clear, with a low around 30. North northeast wind 5 to 10 mph becoming light and variable after midnight.
Sunday
Sunny, with a high near 60. West northwest wind around 5 mph becoming south southwest in the morning.
Sunday Night
Mostly clear, with a low around 38. South southwest wind around 5 mph.
M.L.King Day
Mostly sunny, with a high near 63. South southwest wind 5 to 10 mph becoming east southeast in the afternoon.
Monday Night
Mostly cloudy, with a low around 42.
Tuesday
A 20 percent chance of showers. Cloudy, with a high near 53.
Tuesday Night
A 30 percent chance of showers. Cloudy, with a low around 44.
Wednesday
A 30 percent chance of showers. Mostly cloudy, with a high near 60.
Additional Forecasts and Information
Basemap Options
Click map to change the forecast location
Loading map...
Forecast AreaABOUT THIS FORECAST
Point Forecast:
San Marcos TX
29.88°N 97.94°W (Elev. 577 ft)
29.88°N 97.94°W (Elev. 577 ft)
8:44 am CST Jan 15, 2026
10am CST Jan 15, 2026-6pm CST Jan 21, 2026
Additional Resources
Radar & Satellite Image
Hourly Weather Forecast
