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 in Vicinity and Windy

23°C

73°F

Humidity 84%
Wind Speed NW 54 G 63 km/h
Barometer 1012.4 mb (29.92 in)
Dewpoint 20°C (68°F)
Visibility 16 km
Last update 5 May 2:56 am CDT
Extended Forecast for

San Marcos TX

  • Overnight

    Overnight: Showers and thunderstorms likely, then showers and possibly a thunderstorm after 4am. Some of the storms could be severe. Low around 19. East wind around 15 km/h. Chance of precipitation is 80%. New rainfall amounts between 2.5 and 5 mm possible.

    Low: 19 °C

    Severe
    Thunderstorms

  • Sunday

    Sunday: Showers and thunderstorms, mainly before 1pm. Some of the storms could be severe. High near 27. East wind 15 to 25 km/h, with gusts as high as 35 km/h. Chance of precipitation is 80%. New rainfall amounts between 1 and 2 cm possible.

    High: 27 °C

    Severe
    Thunderstorms

  • Sunday Night

    Sunday Night: Showers and thunderstorms likely, mainly before 7pm. Patchy fog after 4am. Otherwise, increasing clouds, with a low around 21. Southeast wind 10 to 20 km/h, with gusts as high as 30 km/h. Chance of precipitation is 60%. New precipitation amounts between 5 and 7.5 mm possible.

    Low: 21 °C

    T-storms
    Likely then
    Patchy Fog

  • Monday

    Monday: Patchy fog before 11am. Otherwise, mostly cloudy, with a high near 29. South wind 10 to 15 km/h increasing to 20 to 25 km/h in the afternoon. Winds could gust as high as 30 km/h.

    High: 29 °C

    Patchy Fog
    then Partly
    Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 22. South southeast wind 15 to 20 km/h decreasing to 10 to 15 km/h after midnight. Winds could gust as high as 30 km/h.

    Low: 22 °C

    Mostly Cloudy

  • Tuesday

    Tuesday: Patchy fog before 10am. Otherwise, partly sunny, with a high near 32. South wind 10 to 15 km/h.

    High: 32 °C

    Patchy Fog
    then Mostly
    Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 22. South southeast wind 20 to 25 km/h, with gusts as high as 35 km/h.

    Low: 22 °C

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 33. South wind 20 to 25 km/h, with gusts as high as 35 km/h.

    High: 33 °C

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 22. South southeast wind 15 to 20 km/h, with gusts as high as 30 km/h.

    Low: 22 °C

    Partly Cloudy

Detailed Forecast

Overnight
Showers and thunderstorms likely, then showers and possibly a thunderstorm after 4am. Some of the storms could be severe. Low around 19. East wind around 15 km/h. Chance of precipitation is 80%. New rainfall amounts between 2.5 and 5 mm possible.
Sunday
Showers and thunderstorms, mainly before 1pm. Some of the storms could be severe. High near 27. East wind 15 to 25 km/h, with gusts as high as 35 km/h. Chance of precipitation is 80%. New rainfall amounts between 1 and 2 cm possible.
Sunday Night
Showers and thunderstorms likely, mainly before 7pm. Patchy fog after 4am. Otherwise, increasing clouds, with a low around 21. Southeast wind 10 to 20 km/h, with gusts as high as 30 km/h. Chance of precipitation is 60%. New precipitation amounts between 5 and 7.5 mm possible.
Monday
Patchy fog before 11am. Otherwise, mostly cloudy, with a high near 29. South wind 10 to 15 km/h increasing to 20 to 25 km/h in the afternoon. Winds could gust as high as 30 km/h.
Monday Night
Mostly cloudy, with a low around 22. South southeast wind 15 to 20 km/h decreasing to 10 to 15 km/h after midnight. Winds could gust as high as 30 km/h.
Tuesday
Patchy fog before 10am. Otherwise, partly sunny, with a high near 32. South wind 10 to 15 km/h.
Tuesday Night
Mostly cloudy, with a low around 22. South southeast wind 20 to 25 km/h, with gusts as high as 35 km/h.
Wednesday
Partly sunny, with a high near 33. South wind 20 to 25 km/h, with gusts as high as 35 km/h.
Wednesday Night
Partly cloudy, with a low around 22. South southeast wind 15 to 20 km/h, with gusts as high as 30 km/h.
Thursday
Partly sunny, with a high near 32.
Thursday Night
Partly cloudy, with a low around 19.
Friday
Mostly sunny, with a high near 27.
Friday Night
Partly cloudy, with a low around 16.
Saturday
Mostly sunny, with a high near 27.
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ABOUT THIS FORECAST

 
Point Forecast:
San Marcos TX
 29.88°N 97.94°W (Elev. 577 m)
Last Update:
3:42 am CDT May 5, 2024
Forecast Valid:
3am CDT May 5, 2024-6pm CDT May 11, 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