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.

Fair

79°F

26°C

Humidity 82%
Wind Speed S 7 mph
Barometer 30.09 in (1018.1 mb)
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Heat Index82°F (28°C)
Last update 8 Jul 12:56 am CDT
Extended Forecast for

Fentress TX

  • Overnight

    Overnight: Partly cloudy, with a low around 76. South wind around 5 mph.

    Low: 76 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 97. Heat index values as high as 103. Light south southwest wind becoming south 5 to 10 mph in the morning.

    High: 97 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 75. South wind 5 to 10 mph.

    Low: 75 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 97. Heat index values as high as 103. South wind 5 to 15 mph, with gusts as high as 20 mph.

    High: 97 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 77. South southeast wind 5 to 15 mph, with gusts as high as 20 mph.

    Low: 77 °F

    Mostly Clear

  • Friday

    Friday: A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 95. South wind 5 to 15 mph, with gusts as high as 20 mph.

    High: 95 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Friday Night

    Friday Night: Mostly clear, with a low around 77. South southeast wind 5 to 15 mph, with gusts as high as 20 mph.

    Low: 77 °F

    Mostly Clear

  • Saturday

    Saturday: A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 94. South southeast wind 5 to 10 mph. Chance of precipitation is 40%.

    High: 94 °F

    Slight Chance
    Showers then
    Chance
    T-storms

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 77. South southeast wind 5 to 10 mph.

    Low: 77 °F

    Partly Cloudy

Detailed Forecast

Overnight
Partly cloudy, with a low around 76. South wind around 5 mph.
Wednesday
Mostly sunny, with a high near 97. Heat index values as high as 103. Light south southwest wind becoming south 5 to 10 mph in the morning.
Wednesday Night
Mostly clear, with a low around 75. South wind 5 to 10 mph.
Thursday
Sunny, with a high near 97. Heat index values as high as 103. South wind 5 to 15 mph, with gusts as high as 20 mph.
Thursday Night
Mostly clear, with a low around 77. South southeast wind 5 to 15 mph, with gusts as high as 20 mph.
Friday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 95. South wind 5 to 15 mph, with gusts as high as 20 mph.
Friday Night
Mostly clear, with a low around 77. South southeast wind 5 to 15 mph, with gusts as high as 20 mph.
Saturday
A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 94. South southeast wind 5 to 10 mph. Chance of precipitation is 40%.
Saturday Night
Partly cloudy, with a low around 77. South southeast wind 5 to 10 mph.
Sunday
A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 94. Chance of precipitation is 30%.
Sunday Night
Partly cloudy, with a low around 77.
Monday
A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 95.
Monday Night
Partly cloudy, with a low around 77.
Tuesday
Mostly sunny, with a high near 96.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Fentress TX
 29.75°N 97.78°W (Elev. 436 ft)
Last Update:
12:44 am CDT Jul 8, 2026
Forecast Valid:
1am CDT Jul 8, 2026-6pm CDT Jul 14, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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