Current conditions at
San Marcos, San Marcos Municipal Airport (KHYI)
Lat: 29.89°NLon: 97.86°WElev: 597ft.
Fair
65°F
18°C
| Humidity | 87% |
| Wind Speed | S 9 mph |
| Barometer | 30.12 in (1019.4 mb) |
| Dewpoint | 61°F (16°C) |
| Visibility | 10.00 mi |
| Last update | 10 Feb 11:56 am CST |
Extended Forecast for
3 Miles NNW San Marcos Municipal Airport TX
This Afternoon
High: 74 °F
Cloudy
Tonight
Low: 56 °F
Chance
ShowersWednesday
High: 75 °F
Patchy Fog
then SunnyWednesday Night
Low: 54 °F
Partly Cloudy
Thursday
High: 79 °F
Mostly Sunny
Thursday Night
Low: 58 °F
Partly Cloudy
Friday
High: 80 °F
Mostly Cloudy
Friday Night
Low: 61 °F
Slight Chance
Showers then
Showers
LikelySaturday
High: 80 °F
Showers
Likely
Detailed Forecast
This Afternoon
Cloudy, with a high near 74. South wind around 10 mph, with gusts as high as 20 mph.
Tonight
A 30 percent chance of showers, mainly before midnight. Mostly cloudy, with a low around 56. South southeast wind around 5 mph becoming calm in the evening.
Wednesday
Patchy fog between 7am and 8am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 75. North wind 5 to 10 mph.
Wednesday Night
Partly cloudy, with a low around 54. Northeast wind around 5 mph becoming calm in the evening.
Thursday
Mostly sunny, with a high near 79. Calm wind becoming south around 5 mph in the afternoon.
Thursday Night
Partly cloudy, with a low around 58. South wind around 5 mph.
Friday
Mostly cloudy, with a high near 80. South wind 5 to 10 mph, with gusts as high as 20 mph.
Friday Night
A slight chance of showers, then showers likely and possibly a thunderstorm after midnight. Mostly cloudy, with a low around 61. South southeast wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 60%.
Saturday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 80. South wind 10 to 15 mph becoming west in the afternoon. Winds could gust as high as 25 mph. Chance of precipitation is 70%.
Saturday Night
A 20 percent chance of showers before midnight. Mostly clear, with a low around 52.
Sunday
Sunny, with a high near 74.
Sunday Night
Clear, with a low around 45.
Washington's Birthday
Sunny, with a high near 77.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
3 Miles NNW San Marcos Municipal Airport TX
29.95°N 97.89°W (Elev. 646 ft)
29.95°N 97.89°W (Elev. 646 ft)
11:45 am CST Feb 10, 2026
12pm CST Feb 10, 2026-6pm CST Feb 16, 2026
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