Current conditions at

San Marcos, San Marcos Municipal Airport (KHYI)

Lat: 29.89°NLon: 97.86°WElev: 597ft.

Fair

94°F

34°C

Humidity 46%
Wind Speed Vrbl 5 mph
Barometer 29.96 in (1013.6 mb)
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Heat Index100°F (38°C)
Last update 21 Sep 12:56 pm CDT
Extended Forecast for

Fentress TX

  • This Afternoon

    This Afternoon: A 20 percent chance of showers and thunderstorms after 4pm.  Sunny and hot, with a high near 99. Heat index values as high as 105. Calm wind becoming east around 5 mph.

    High: 99 °F

    Slight Chance
    T-storms

  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms before 10pm.  Mostly clear, with a low around 74. East southeast wind around 5 mph becoming calm  in the evening.

    Low: 74 °F

    Slight Chance
    T-storms then
    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 98. Heat index values as high as 102. Calm wind becoming east around 5 mph in the afternoon.

    High: 98 °F

    Sunny

  • Tuesday Night

    Tuesday Night: A slight chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am.  Partly cloudy, with a low around 75. East wind around 5 mph becoming calm  in the evening.  Chance of precipitation is 20%.

    Low: 75 °F

    Slight Chance
    T-storms then
    Slight Chance
    Showers

  • Wednesday

    Wednesday: Mostly sunny and hot, with a high near 99. Light and variable wind becoming east 5 to 10 mph in the morning.

    High: 99 °F

    Hot

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 75. East wind 5 to 10 mph becoming light and variable  in the evening.

    Low: 75 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 98. Light north northeast wind becoming east 5 to 10 mph in the morning.

    High: 98 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 73. East wind 5 to 10 mph becoming light and variable  in the evening.

    Low: 73 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 96. Calm wind becoming east around 5 mph in the afternoon.

    High: 96 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
A 20 percent chance of showers and thunderstorms after 4pm. Sunny and hot, with a high near 99. Heat index values as high as 105. Calm wind becoming east around 5 mph.
Tonight
A 20 percent chance of showers and thunderstorms before 10pm. Mostly clear, with a low around 74. East southeast wind around 5 mph becoming calm in the evening.
Tuesday
Sunny, with a high near 98. Heat index values as high as 102. Calm wind becoming east around 5 mph in the afternoon.
Tuesday Night
A slight chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am. Partly cloudy, with a low around 75. East wind around 5 mph becoming calm in the evening. Chance of precipitation is 20%.
Wednesday
Mostly sunny and hot, with a high near 99. Light and variable wind becoming east 5 to 10 mph in the morning.
Wednesday Night
Partly cloudy, with a low around 75. East wind 5 to 10 mph becoming light and variable in the evening.
Thursday
Mostly sunny, with a high near 98. Light north northeast wind becoming east 5 to 10 mph in the morning.
Thursday Night
Mostly cloudy, with a low around 73. East wind 5 to 10 mph becoming light and variable in the evening.
Friday
Mostly sunny, with a high near 96. Calm wind becoming east around 5 mph in the afternoon.
Friday Night
Partly cloudy, with a low around 72.
Saturday
Mostly sunny, with a high near 96.
Saturday Night
Partly cloudy, with a low around 72.
Sunday
Mostly sunny, with a high near 97.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
Fentress TX
 29.75°N 97.78°W (Elev. 436 ft)
12:46 pm CDT Sep 21, 2026
1pm CDT Sep 21, 2026-6pm CDT Sep 27, 2026
 
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