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Hazardous Weather Conditions

Current conditions at

San Marcos, San Marcos Municipal Airport (KHYI)

Lat: 29.89°NLon: 97.86°WElev: 597ft.

Thunderstorm in Vicinity

21°C

70°F

Humidity 100%
Wind Speed NE 19 km/h
Barometer 1017.4 mb (30.07 in)
Dewpoint 21°C (70°F)
Visibility 11 km
Last update 29 May 12:56 am CDT
Extended Forecast for

San Marcos TX

  • Overnight

    Overnight: Showers and possibly a thunderstorm before 3am, then a chance of showers and thunderstorms after 3am. Some of the storms could be severe. Low around 22. East northeast wind 10 to 15 km/h. Chance of precipitation is 80%. New rainfall amounts between 5 and 7.5 mm possible.

    Low: 22 °C

    Severe
    Thunderstorms

  • Wednesday

    Wednesday: A 30 percent chance of showers and thunderstorms, mainly before 7am. Partly sunny, with a high near 32. Heat index values as high as 38. East wind 10 to 15 km/h, with gusts as high as 30 km/h.

    High: 32 °C

    Chance
    Showers then
    Slight Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers and thunderstorms before 10pm. Mostly cloudy, with a low around 23. East southeast wind 10 to 15 km/h, with gusts as high as 30 km/h.

    Low: 23 °C

    Slight Chance
    T-storms then
    Mostly Cloudy

  • Thursday

    Thursday: A 20 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 33. Heat index values as high as 39. South southeast wind 10 to 15 km/h, with gusts as high as 30 km/h.

    High: 33 °C

    Mostly Cloudy
    then Slight
    Chance
    T-storms

  • Thursday Night

    Thursday Night: A 30 percent chance of showers and thunderstorms, mainly before 1am. Mostly cloudy, with a low around 23. Southeast wind 10 to 20 km/h, with gusts as high as 30 km/h.

    Low: 23 °C

    Chance
    T-storms

  • Friday

    Friday: A 40 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 32. South southeast wind 10 to 20 km/h, with gusts as high as 30 km/h.

    High: 32 °C

    Mostly Cloudy
    then Chance
    T-storms

  • Friday Night

    Friday Night: A 40 percent chance of showers and thunderstorms, mainly before 1am. Mostly cloudy, with a low around 21. Southeast wind 10 to 20 km/h, with gusts as high as 30 km/h.

    Low: 21 °C

    Chance
    T-storms

  • Saturday

    Saturday: A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 32. Southeast wind 10 to 15 km/h.

    High: 32 °C

    Slight Chance
    T-storms

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 23. Southeast wind 10 to 15 km/h.

    Low: 23 °C

    Mostly Cloudy

Detailed Forecast

Overnight
Showers and possibly a thunderstorm before 3am, then a chance of showers and thunderstorms after 3am. Some of the storms could be severe. Low around 22. East northeast wind 10 to 15 km/h. Chance of precipitation is 80%. New rainfall amounts between 5 and 7.5 mm possible.
Wednesday
A 30 percent chance of showers and thunderstorms, mainly before 7am. Partly sunny, with a high near 32. Heat index values as high as 38. East wind 10 to 15 km/h, with gusts as high as 30 km/h.
Wednesday Night
A 20 percent chance of showers and thunderstorms before 10pm. Mostly cloudy, with a low around 23. East southeast wind 10 to 15 km/h, with gusts as high as 30 km/h.
Thursday
A 20 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 33. Heat index values as high as 39. South southeast wind 10 to 15 km/h, with gusts as high as 30 km/h.
Thursday Night
A 30 percent chance of showers and thunderstorms, mainly before 1am. Mostly cloudy, with a low around 23. Southeast wind 10 to 20 km/h, with gusts as high as 30 km/h.
Friday
A 40 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 32. South southeast wind 10 to 20 km/h, with gusts as high as 30 km/h.
Friday Night
A 40 percent chance of showers and thunderstorms, mainly before 1am. Mostly cloudy, with a low around 21. Southeast wind 10 to 20 km/h, with gusts as high as 30 km/h.
Saturday
A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 32. Southeast wind 10 to 15 km/h.
Saturday Night
Mostly cloudy, with a low around 23. Southeast wind 10 to 15 km/h.
Sunday
Partly sunny, with a high near 33.
Sunday Night
Mostly cloudy, with a low around 24.
Monday
Partly sunny, with a high near 34.
Monday Night
Partly cloudy, with a low around 24.
Tuesday
Partly sunny, with a high near 35.
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ABOUT THIS FORECAST

 
Point Forecast:
San Marcos TX
 29.9°N 97.91°W (Elev. 640 m)
Last Update:
1:12 am CDT May 29, 2024
Forecast Valid:
1am CDT May 29, 2024-6pm CDT Jun 4, 2024
 
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