Lake-Effect Snow through Friday; Strong Winds in the Northern and Central Plains
A clipper-like system will drop down from Canada on Thursday, 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 Thursday 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
56°F
13°C
| Humidity | 36% |
| Wind Speed | N 9 mph |
| Barometer | 30.24 in (1023.6 mb) |
| Dewpoint | 29°F (-2°C) |
| Visibility | 10.00 mi |
| Last update | 14 Jan 8:56 pm CST |
Extended Forecast for
San Marcos TX
Tonight
Low: 36 °F
Clear
Thursday
High: 66 °F
Sunny
Thursday Night
Low: 43 °F
Clear
Friday
High: 72 °F
Sunny
Friday Night
Low: 40 °F
Mostly Clear
Saturday
High: 56 °F
Mostly Sunny
Saturday Night
Low: 30 °F
Mostly Clear
Sunday
High: 62 °F
Sunny
Sunday Night
Low: 40 °F
Mostly Clear
Detailed Forecast
Tonight
Clear, with a low around 36. North northwest wind 5 to 10 mph.
Thursday
Sunny, with a high near 66. Calm wind becoming south southwest around 5 mph in the afternoon.
Thursday Night
Clear, with a low around 43. 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 40. North northeast wind 5 to 10 mph, with gusts as high as 20 mph.
Saturday
Mostly sunny, with a high near 56. Northeast wind 5 to 10 mph, with gusts as high as 20 mph.
Saturday Night
Mostly clear, with a low around 30. Northeast wind around 5 mph becoming calm in the evening.
Sunday
Sunny, with a high near 62. West wind 5 to 10 mph becoming south in the afternoon.
Sunday Night
Mostly clear, with a low around 40. South wind around 5 mph.
M.L.King Day
Partly sunny, with a high near 66.
Monday Night
Mostly cloudy, with a low around 42.
Tuesday
Mostly cloudy, with a high near 57.
Tuesday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 44.
Wednesday
A 20 percent chance of showers. Mostly cloudy, with a high near 62.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
San Marcos TX
29.9°N 97.91°W (Elev. 640 ft)
29.9°N 97.91°W (Elev. 640 ft)
7:46 pm CST Jan 14, 2026
9pm CST Jan 14, 2026-6pm CST Jan 21, 2026
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