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

Areas of Severe Thunderstorms, Critical Fire Weather, and Excessive Rainfall This Week

Isolated strong to severe thunderstorms capable of gusty winds, hail, and isolated flash flooding will be possible across parts of the Plains through Wednesday. Critical fire weather is possible on Wednesday in southwest New Mexico. Excessive rainfall may result in some flooding in the northern High Plains late this week. Read More >

Current conditions at

San Marcos, San Marcos Municipal Airport (KHYI)

Lat: 29.89°NLon: 97.86°WElev: 597ft.

Fair

70°F

21°C

Humidity 93%
Wind Speed SE 6 mph
Barometer 29.92 in (1012.4 mb)
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Last update 29 May 10:56 pm CDT
Extended Forecast for

San Marcos TX

  • Tonight

    Tonight: Mostly clear, with a low around 65. Southeast wind around 5 mph becoming west southwest after midnight.

    Mostly Clear

    Low: 65 °F

  • Tuesday

    Tuesday: Mostly sunny, with a high near 88. Calm wind becoming east southeast around 5 mph in the afternoon.

    Mostly Sunny

    High: 88 °F

  • Tuesday
    Night

    Tuesday Night: Mostly clear, with a low around 65. Southeast wind 5 to 10 mph.

    Mostly Clear

    Low: 65 °F

  • Wednesday

    Wednesday: Mostly sunny, with a high near 88. Light south southeast wind becoming southeast 5 to 10 mph in the morning.

    Mostly Sunny

    High: 88 °F

  • Wednesday
    Night

    Wednesday Night: Partly cloudy, with a low around 67. Southeast wind around 10 mph.

    Partly Cloudy

    Low: 67 °F

  • Thursday

    Thursday: Partly sunny, with a high near 88. Southeast wind 5 to 15 mph, with gusts as high as 20 mph.

    Partly Sunny

    High: 88 °F

  • Thursday
    Night

    Thursday Night: Mostly cloudy, with a low around 69. Southeast wind 10 to 15 mph, with gusts as high as 20 mph.

    Mostly Cloudy

    Low: 69 °F

  • Friday

    Friday: Partly sunny, with a high near 89. Southeast wind 5 to 15 mph, with gusts as high as 20 mph.

    Partly Sunny

    High: 89 °F

  • Friday
    Night

    Friday Night: A slight chance of showers between 8pm and 2am. Mostly cloudy, with a low around 68. South southeast wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.

    Slight Chance
    Showers

    Low: 68 °F

Detailed Forecast

Tonight
Mostly clear, with a low around 65. Southeast wind around 5 mph becoming west southwest after midnight.
Tuesday
Mostly sunny, with a high near 88. Calm wind becoming east southeast around 5 mph in the afternoon.
Tuesday Night
Mostly clear, with a low around 65. Southeast wind 5 to 10 mph.
Wednesday
Mostly sunny, with a high near 88. Light south southeast wind becoming southeast 5 to 10 mph in the morning.
Wednesday Night
Partly cloudy, with a low around 67. Southeast wind around 10 mph.
Thursday
Partly sunny, with a high near 88. Southeast wind 5 to 15 mph, with gusts as high as 20 mph.
Thursday Night
Mostly cloudy, with a low around 69. Southeast wind 10 to 15 mph, with gusts as high as 20 mph.
Friday
Partly sunny, with a high near 89. Southeast wind 5 to 15 mph, with gusts as high as 20 mph.
Friday Night
A slight chance of showers between 8pm and 2am. Mostly cloudy, with a low around 68. South southeast wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.
Saturday
A 20 percent chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 89.
Saturday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 68.
Sunday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 88.
Sunday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 68.
Monday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 88.
Click Map For Forecast
Disclaimer
Map Legend
Point Forecast:
San Marcos TX
 29.88°N 97.94°W (Elev. 577 ft)
Last Update:
10:44 pm CDT May 29, 2023
Forecast Valid:
11pm CDT May 29, 2023-6pm CDT Jun 5, 2023
 
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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