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

Hazardous Weather Conditions

Current conditions at

San Marcos, San Marcos Municipal Airport (KHYI)

Lat: 29.89°NLon: 97.86°WElev: 597ft.

Thunderstorm Rain

66°F

19°C

Humidity 93%
Wind Speed E 5 mph
Barometer 29.90 in (1011.9 mb)
Dewpoint 64°F (18°C)
Visibility 8.00 mi
Last update 21 May 7:56 pm CDT
Extended Forecast for

Kyle TX

Flood Watch May 22, 07:00pm until May 25, 07:00pm
Click here for hazard details and duration
Flood Watch

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms, mainly before 1am. Mostly cloudy, with a low around 67. East southeast wind around 5 mph becoming calm.

    Low: 67 °F

    Chance
    T-storms then
    Chance
    Showers

  • Friday

    Friday: A slight chance of showers and thunderstorms before 10am, then a slight chance of showers and thunderstorms after 4pm. Mostly cloudy, then gradually becoming sunny, with a high near 86. Calm wind becoming south around 5 mph in the afternoon. Chance of precipitation is 20%.

    High: 86 °F

    Slight Chance
    T-storms

  • Friday Night

    Friday Night: A 20 percent chance of showers and thunderstorms, mainly between 10pm and 1am. Increasing clouds, with a low around 70. South wind around 5 mph.

    Low: 70 °F

    Slight Chance
    T-storms

  • Saturday

    Saturday: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1pm. High near 82. South southeast wind around 5 mph. Chance of precipitation is 90%.

    High: 82 °F

    Chance
    T-storms then
    T-storms

  • Saturday Night

    Saturday Night: Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 67. Southeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 70%.

    Low: 67 °F

    Showers
    Likely

  • Sunday

    Sunday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 83. Calm wind becoming east northeast around 5 mph in the afternoon. Chance of precipitation is 60%.

    High: 83 °F

    Chance
    T-storms then
    Showers
    Likely

  • Sunday Night

    Sunday Night: A 30 percent chance of showers and thunderstorms, mainly before 1am. Partly cloudy, with a low around 68. East northeast wind around 5 mph becoming calm in the evening.

    Low: 68 °F

    Chance
    T-storms

  • Memorial Day

    Memorial Day: A 30 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 84. Northeast wind around 5 mph.

    High: 84 °F

    Chance
    T-storms

  • Monday Night

    Monday Night: A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 69. East wind around 5 mph becoming calm in the evening.

    Low: 69 °F

    Slight Chance
    T-storms

Detailed Forecast

Tonight
A 30 percent chance of showers and thunderstorms, mainly before 1am. Mostly cloudy, with a low around 67. East southeast wind around 5 mph becoming calm.
Friday
A slight chance of showers and thunderstorms before 10am, then a slight chance of showers and thunderstorms after 4pm. Mostly cloudy, then gradually becoming sunny, with a high near 86. Calm wind becoming south around 5 mph in the afternoon. Chance of precipitation is 20%.
Friday Night
A 20 percent chance of showers and thunderstorms, mainly between 10pm and 1am. Increasing clouds, with a low around 70. South wind around 5 mph.
Saturday
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1pm. High near 82. South southeast wind around 5 mph. Chance of precipitation is 90%.
Saturday Night
Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 67. Southeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 70%.
Sunday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 83. Calm wind becoming east northeast around 5 mph in the afternoon. Chance of precipitation is 60%.
Sunday Night
A 30 percent chance of showers and thunderstorms, mainly before 1am. Partly cloudy, with a low around 68. East northeast wind around 5 mph becoming calm in the evening.
Memorial Day
A 30 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 84. Northeast wind around 5 mph.
Monday Night
A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 69. East wind around 5 mph becoming calm in the evening.
Tuesday
A 40 percent chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 85.
Tuesday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 71. Chance of precipitation is 60%.
Wednesday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 82. Chance of precipitation is 70%.
Wednesday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 71.
Thursday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 85.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Kyle TX
 30°N 97.86°W (Elev. 699 ft)
Last Update:
6:42 pm CDT May 21, 2026
Forecast Valid:
8pm CDT May 21, 2026-6pm CDT May 28, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation