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.

A Few Clouds and Breezy

77°F

25°C

Humidity 74%
Wind Speed SE 22 G 25 mph
Barometer 29.86 in (1010.4 mb)
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 6 Mar 7:56 pm CST
Extended Forecast for

2 Miles SW Hays TX

  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms before 9pm. Cloudy, with a low around 68. South southeast wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 68 °F

    Slight Chance
    T-storms then
    Cloudy

  • Saturday

    Saturday: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after noon. High near 81. South southeast wind around 10 mph becoming northeast in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    High: 81 °F

    Chance
    Showers then
    Showers

  • Saturday Night

    Saturday Night: Showers and possibly a thunderstorm. Low around 54. North wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 54 °F

    T-storms then
    Showers
    Likely

  • Sunday

    Sunday: Showers likely and possibly a thunderstorm before noon, then a chance of showers and thunderstorms after noon. Cloudy, with a high near 69. North wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 60%.

    High: 69 °F

    Showers
    Likely then
    Chance
    T-storms

  • Sunday Night

    Sunday Night: A 20 percent chance of showers and thunderstorms. Cloudy, with a low around 59. Northeast wind around 5 mph becoming calm in the evening.

    Low: 59 °F

    Slight Chance
    T-storms

  • Monday

    Monday: A chance of showers, with thunderstorms also possible after noon. Cloudy, with a high near 81. South wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 40%.

    High: 81 °F

    Chance
    Showers

  • Monday Night

    Monday Night: A slight chance of showers, then a chance of showers and thunderstorms after midnight. Cloudy, with a low around 66. South southeast wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.

    Low: 66 °F

    Slight Chance
    Showers then
    Chance
    T-storms

  • Tuesday

    Tuesday: A 50 percent chance of showers and thunderstorms. Cloudy, with a high near 81. South wind 10 to 15 mph, with gusts as high as 30 mph.

    High: 81 °F

    Chance
    Showers then
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Showers and thunderstorms likely before midnight, then showers likely and possibly a thunderstorm after midnight. Mostly cloudy, with a low around 62. South southeast wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 70%.

    Low: 62 °F

    T-storms
    Likely then
    Showers
    Likely

Detailed Forecast

Tonight
A 20 percent chance of showers and thunderstorms before 9pm. Cloudy, with a low around 68. South southeast wind 10 to 15 mph, with gusts as high as 20 mph.
Saturday
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after noon. High near 81. South southeast wind around 10 mph becoming northeast in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Saturday Night
Showers and possibly a thunderstorm. Low around 54. North wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.
Sunday
Showers likely and possibly a thunderstorm before noon, then a chance of showers and thunderstorms after noon. Cloudy, with a high near 69. North wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 60%.
Sunday Night
A 20 percent chance of showers and thunderstorms. Cloudy, with a low around 59. Northeast wind around 5 mph becoming calm in the evening.
Monday
A chance of showers, with thunderstorms also possible after noon. Cloudy, with a high near 81. South wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 40%.
Monday Night
A slight chance of showers, then a chance of showers and thunderstorms after midnight. Cloudy, with a low around 66. South southeast wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.
Tuesday
A 50 percent chance of showers and thunderstorms. Cloudy, with a high near 81. South wind 10 to 15 mph, with gusts as high as 30 mph.
Tuesday Night
Showers and thunderstorms likely before midnight, then showers likely and possibly a thunderstorm after midnight. Mostly cloudy, with a low around 62. South southeast wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 70%.
Wednesday
A chance of showers, with thunderstorms also possible after noon. Mostly sunny, with a high near 79. Chance of precipitation is 50%.
Wednesday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 52.
Thursday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 70.
Thursday Night
Mostly clear, with a low around 48.
Friday
Sunny, with a high near 77.
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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:
5:46 pm CST Mar 6, 2026
Forecast Valid:
8pm CST Mar 6, 2026-6pm CDT Mar 13, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation