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.

Overcast

72°F

22°C

Humidity 94%
Wind Speed NE 5 mph
Barometer 30.02 in (1016.0 mb)
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Last update 21 May 12:56 am CDT
Extended Forecast for

Kyle TX

  • Overnight

    Overnight: A slight chance of showers, then a chance of showers and thunderstorms after 4am. Mostly cloudy, with a low around 69. East wind around 5 mph. Chance of precipitation is 40%.

    Low: 69 °F

    Chance
    T-storms

  • Thursday

    Thursday: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 80. Northeast wind around 5 mph becoming south in the afternoon. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 80 °F

    Chance
    T-storms

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms before 4am, then a slight chance of showers. Mostly cloudy, with a low around 68. South wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%.

    Low: 68 °F

    Chance
    T-storms

  • Friday

    Friday: Mostly cloudy, then gradually becoming sunny, with a high near 87. Calm wind becoming south around 5 mph in the morning.

    High: 87 °F

    Decreasing
    Clouds

  • Friday Night

    Friday Night: A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 71. South southeast wind 5 to 10 mph.

    Low: 71 °F

    Chance
    T-storms

  • Saturday

    Saturday: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1pm. High near 83. South southeast wind around 5 mph. Chance of precipitation is 90%.

    High: 83 °F

    Chance
    T-storms then
    Showers

  • Saturday Night

    Saturday Night: Showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Low around 68. East southeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 80%.

    Low: 68 °F

    Heavy Rain

  • Sunday

    Sunday: Showers and thunderstorms likely, mainly after 1pm. Partly sunny, with a high near 83. East wind around 5 mph. Chance of precipitation is 70%.

    High: 83 °F

    T-storms
    Likely

  • Sunday Night

    Sunday Night: A 40 percent chance of showers and thunderstorms, mainly before 1am. Partly cloudy, with a low around 68. Northeast wind around 5 mph becoming calm in the evening.

    Low: 68 °F

    Chance
    T-storms

Detailed Forecast

Overnight
A slight chance of showers, then a chance of showers and thunderstorms after 4am. Mostly cloudy, with a low around 69. East wind around 5 mph. Chance of precipitation is 40%.
Thursday
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 80. Northeast wind around 5 mph becoming south in the afternoon. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday Night
A chance of showers and thunderstorms before 4am, then a slight chance of showers. Mostly cloudy, with a low around 68. South wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%.
Friday
Mostly cloudy, then gradually becoming sunny, with a high near 87. Calm wind becoming south around 5 mph in the morning.
Friday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 71. South southeast wind 5 to 10 mph.
Saturday
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1pm. High near 83. South southeast wind around 5 mph. Chance of precipitation is 90%.
Saturday Night
Showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Low around 68. East southeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 80%.
Sunday
Showers and thunderstorms likely, mainly after 1pm. Partly sunny, with a high near 83. East wind around 5 mph. Chance of precipitation is 70%.
Sunday Night
A 40 percent chance of showers and thunderstorms, mainly before 1am. Partly cloudy, with a low around 68. Northeast wind around 5 mph becoming calm in the evening.
Memorial Day
A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 84.
Monday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 70.
Tuesday
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 85.
Tuesday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 72.
Wednesday
Showers and thunderstorms likely. Mostly cloudy, with a high near 84. Chance of precipitation is 70%.
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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:
1:42 am CDT May 21, 2026
Forecast Valid:
1am CDT May 21, 2026-6pm CDT May 27, 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