Heavy Mountain Snow in the Northwest U.S.; Wintry Mix in the Northeast U.S.
Two more cold fronts will pass through the Northwest U.S. this week with heavy mountain snow continuing across the Cascades, and northern Rockies. A quick moving storm system will bring mixed precipitation including some freezing rain across the Northeast U.S. overnight into Wednesday. Read More >
Current conditions at
San Marcos, San Marcos Municipal Airport (KHYI)
Lat: 29.89°NLon: 97.86°WElev: 597ft.
Fair
54°F
12°C
| Humidity | 69% |
| Wind Speed | NW 7 mph |
| Barometer | 29.98 in (1014.8 mb) |
| Dewpoint | 44°F (7°C) |
| Visibility | 10.00 mi |
| Wind Chill | 52°F (11°C) |
| Last update | 6 Jan 11:56 pm CST |
Extended Forecast for
San Marcos Municipal Airport TX
Overnight
Low: 54 °F
Partly Cloudy
Wednesday
High: 81 °F
Mostly Sunny
Wednesday Night
Low: 63 °F
Increasing
CloudsThursday
High: 80 °F
Mostly Cloudy
Thursday Night
Low: 60 °F
Mostly Cloudy
Friday
High: 77 °F
Slight Chance
T-stormsFriday Night
Low: 43 °F
Mostly Cloudy
Saturday
High: 59 °F
Partly Sunny
Saturday Night
Low: 38 °F
Mostly Cloudy
Detailed Forecast
Overnight
Partly cloudy, with a low around 54. Calm wind.
Wednesday
Mostly sunny, with a high near 81. Light and variable wind becoming south 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.
Wednesday Night
Increasing clouds, with a low around 63. South southeast wind 10 to 15 mph, with gusts as high as 25 mph.
Thursday
Mostly cloudy, with a high near 80. South southwest wind 5 to 15 mph, with gusts as high as 25 mph.
Thursday Night
Mostly cloudy, with a low around 60. South southwest wind around 5 mph becoming calm in the evening.
Friday
A slight chance of showers and thunderstorms. Mostly cloudy, with a high near 77. Light and variable wind becoming west northwest 5 to 10 mph in the morning. Chance of precipitation is 20%.
Friday Night
Mostly cloudy, with a low around 43. North northwest wind 5 to 15 mph, with gusts as high as 25 mph.
Saturday
Partly sunny, with a high near 59. North wind 10 to 20 mph, with gusts as high as 30 mph.
Saturday Night
Mostly cloudy, with a low around 38. North wind 5 to 10 mph, with gusts as high as 20 mph.
Sunday
Partly sunny, with a high near 60.
Sunday Night
Mostly cloudy, with a low around 36.
Monday
Partly sunny, with a high near 57.
Monday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 37.
Tuesday
Mostly sunny, with a high near 61.
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 Jan 6, 2026
12am CST Jan 7, 2026-6pm CST Jan 13, 2026
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