Tracking Weekend Storm Impacts
A storm and trailing cold front will continue to slowly move through the Gulf Coast and Southeast U.S. through this weekend with widespread rain showers and isolated thunderstorms. A fast-moving clipper storm may bring several inches of snow to the north-central Plains, Midwest, eastern Great Lakes, and Northeast regions this weekend. Read More >
Current conditions at
San Marcos, San Marcos Municipal Airport (KHYI)
Lat: 29.89°NLon: 97.86°WElev: 597ft.
Fair
48°F
9°C
| Humidity | 83% |
| Wind Speed | S 5 mph |
| Barometer | 30.02 in (1016.6 mb) |
| Dewpoint | 43°F (6°C) |
| Visibility | 10.00 mi |
| Wind Chill | 46°F (8°C) |
| Last update | 5 Dec 10:56 pm CST |
Extended Forecast for
San Marcos Municipal Airport TX
Tonight
Low: 43 °F
Mostly Cloudy
Saturday
High: 74 °F
Becoming
SunnySaturday Night
Low: 51 °F
Mostly Clear
Sunday
High: 71 °F
Sunny
Sunday Night
Low: 38 °F
Mostly Clear
Monday
High: 61 °F
Sunny
Monday Night
Low: 34 °F
Clear
Tuesday
High: 67 °F
Sunny
Tuesday Night
Low: 46 °F
Mostly Clear
Detailed Forecast
Tonight
Mostly cloudy, with a low around 43. Southwest wind around 5 mph.
Saturday
Mostly cloudy through mid morning, then gradual clearing, with a high near 74. Southwest wind 5 to 10 mph.
Saturday Night
Mostly clear, with a low around 51. South wind around 5 mph becoming west southwest after midnight.
Sunday
Sunny, with a high near 71. West southwest wind 5 to 10 mph becoming north 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph.
Sunday Night
Mostly clear, with a low around 38. North wind 10 to 15 mph, with gusts as high as 20 mph.
Monday
Sunny, with a high near 61. North wind 5 to 10 mph becoming east northeast in the afternoon.
Monday Night
Clear, with a low around 34. East northeast wind around 5 mph becoming calm in the evening.
Tuesday
Sunny, with a high near 67. Light south southwest wind increasing to 5 to 10 mph in the afternoon.
Tuesday Night
Mostly clear, with a low around 46. South southwest wind 5 to 10 mph.
Wednesday
Sunny, with a high near 76.
Wednesday Night
Mostly clear, with a low around 47.
Thursday
Sunny, with a high near 79.
Thursday Night
Mostly clear, with a low around 49.
Friday
Mostly sunny, with a high near 69.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
San Marcos Municipal Airport TX
29.88°N 97.86°W (Elev. 600 ft)
29.88°N 97.86°W (Elev. 600 ft)
11:42 pm CST Dec 5, 2025
11pm CST Dec 5, 2025-6pm CST Dec 12, 2025
Additional Resources
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