National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

San Marcos, San Marcos Municipal Airport (KHYI)

Lat: 29.89°NLon: 97.86°WElev: 597ft.

Fair

86°F

30°C

Humidity 40%
Wind Speed S 15 mph
Barometer 29.98 in (1014.4 mb)
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Heat Index85°F (29°C)
Last update 2 Mar 3:56 pm CST
Extended Forecast for

2 Miles SW Hays TX

  • Tonight

    Tonight: Increasing clouds, with a low around 61. South wind around 10 mph, with gusts as high as 20 mph.

    Low: 61 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: Mostly cloudy, then gradually becoming sunny, with a high near 86. South wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 86 °F

    Decreasing
    Clouds

  • Tuesday Night

    Tuesday Night: A slight chance of drizzle after midnight. Increasing clouds, with a low around 65. South wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 65 °F

    Partly Cloudy
    then Slight
    Chance
    Drizzle

  • Wednesday

    Wednesday: A chance of showers and thunderstorms before noon, then a chance of showers between noon and 3pm, then a chance of showers and thunderstorms after 3pm. Mostly cloudy, with a high near 85. South wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 40%.

    High: 85 °F

    Chance
    T-storms then
    Chance
    Showers

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms before midnight, then a slight chance of showers. Mostly cloudy, with a low around 64. South southeast wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.

    Low: 64 °F

    Chance
    T-storms then
    Slight Chance
    Showers

  • Thursday

    Thursday: A 20 percent chance of showers before noon. Partly sunny, with a high near 87. South southeast wind 10 to 15 mph, with gusts as high as 30 mph.

    High: 87 °F

    Slight Chance
    Showers then
    Mostly Sunny

  • Thursday Night

    Thursday Night: A 20 percent chance of showers after midnight. Mostly cloudy, with a low around 66. South southeast wind around 15 mph, with gusts as high as 25 mph.

    Low: 66 °F

    Partly Cloudy
    then Slight
    Chance
    Showers

  • Friday

    Friday: A slight chance of showers, then a chance of showers and thunderstorms after noon. Partly sunny, with a high near 86. South wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 40%.

    High: 86 °F

    Chance
    Showers

  • Friday Night

    Friday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 65. South southeast wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 50%.

    Low: 65 °F

    Chance
    T-storms then
    Chance
    Showers

Detailed Forecast

Tonight
Increasing clouds, with a low around 61. South wind around 10 mph, with gusts as high as 20 mph.
Tuesday
Mostly cloudy, then gradually becoming sunny, with a high near 86. South wind 10 to 15 mph, with gusts as high as 25 mph.
Tuesday Night
A slight chance of drizzle after midnight. Increasing clouds, with a low around 65. South wind 10 to 15 mph, with gusts as high as 25 mph.
Wednesday
A chance of showers and thunderstorms before noon, then a chance of showers between noon and 3pm, then a chance of showers and thunderstorms after 3pm. Mostly cloudy, with a high near 85. South wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 40%.
Wednesday Night
A chance of showers and thunderstorms before midnight, then a slight chance of showers. Mostly cloudy, with a low around 64. South southeast wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.
Thursday
A 20 percent chance of showers before noon. Partly sunny, with a high near 87. South southeast wind 10 to 15 mph, with gusts as high as 30 mph.
Thursday Night
A 20 percent chance of showers after midnight. Mostly cloudy, with a low around 66. South southeast wind around 15 mph, with gusts as high as 25 mph.
Friday
A slight chance of showers, then a chance of showers and thunderstorms after noon. Partly sunny, with a high near 86. South wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 40%.
Friday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 65. South southeast wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 50%.
Saturday
A chance of showers, then showers and possibly a thunderstorm after noon. High near 82. Chance of precipitation is 80%.
Saturday Night
Showers likely and possibly a thunderstorm. Cloudy, with a low around 60. Chance of precipitation is 70%.
Sunday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 73. Chance of precipitation is 70%.
Sunday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 58.
Monday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 76.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SW Hays TX
 30.09°N 97.89°W (Elev. 801 ft)
Last Update:
3:46 pm CST Mar 2, 2026
Forecast Valid:
4pm CST Mar 2, 2026-6pm CDT Mar 9, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation