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

80°F

27°C

Humidity 76%
Wind Speed Calm
Barometer 29.99 in (1014.4 mb)
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Heat Index84°F (29°C)
Last update 2 Sep 1:56 am CDT
Extended Forecast for

3 Miles NE Fentress TX

  • Overnight

    Overnight: Mostly clear, with a low around 76. South southwest wind around 5 mph.

    Low: 76 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny and hot, with a high near 101. Heat index values as high as 106. South southwest wind around 5 mph.

    High: 101 °F

    Hot

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 76. East southeast wind 5 to 10 mph becoming south after midnight.

    Low: 76 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny and hot, with a high near 100. Heat index values as high as 105. South wind 5 to 10 mph.

    High: 100 °F

    Hot

  • Thursday Night

    Thursday Night: A slight chance of showers between 1am and 4am, then a slight chance of showers and thunderstorms after 4am. Partly cloudy, with a low around 75. South southeast wind 5 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.

    Low: 75 °F

    Partly Cloudy
    then Slight
    Chance
    T-storms

  • Friday

    Friday: A slight chance of thunderstorms before 1pm, then a slight chance of showers between 1pm and 4pm, then a slight chance of showers and thunderstorms after 4pm. Mostly sunny, with a high near 97. South wind around 5 mph. Chance of precipitation is 20%.

    High: 97 °F

    Slight Chance
    T-storms

  • Friday Night

    Friday Night: A slight chance of thunderstorms before 7pm. Mostly clear, with a low around 74. Southeast wind 5 to 10 mph becoming light south after midnight. Chance of precipitation is 10%.

    Low: 74 °F

    Slight Chance
    T-storms then
    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 98. Calm wind becoming southeast around 5 mph in the afternoon.

    High: 98 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 74. East southeast wind 5 to 10 mph becoming light and variable in the evening.

    Low: 74 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly clear, with a low around 76. South southwest wind around 5 mph.
Wednesday
Mostly sunny and hot, with a high near 101. Heat index values as high as 106. South southwest wind around 5 mph.
Wednesday Night
Partly cloudy, with a low around 76. East southeast wind 5 to 10 mph becoming south after midnight.
Thursday
Mostly sunny and hot, with a high near 100. Heat index values as high as 105. South wind 5 to 10 mph.
Thursday Night
A slight chance of showers between 1am and 4am, then a slight chance of showers and thunderstorms after 4am. Partly cloudy, with a low around 75. South southeast wind 5 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.
Friday
A slight chance of thunderstorms before 1pm, then a slight chance of showers between 1pm and 4pm, then a slight chance of showers and thunderstorms after 4pm. Mostly sunny, with a high near 97. South wind around 5 mph. Chance of precipitation is 20%.
Friday Night
A slight chance of thunderstorms before 7pm. Mostly clear, with a low around 74. Southeast wind 5 to 10 mph becoming light south after midnight. Chance of precipitation is 10%.
Saturday
Sunny, with a high near 98. Calm wind becoming southeast around 5 mph in the afternoon.
Saturday Night
Mostly clear, with a low around 74. East southeast wind 5 to 10 mph becoming light and variable in the evening.
Sunday
A 20 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 97.
Sunday Night
Mostly clear, with a low around 74.
Labor Day
Sunny, with a high near 98.
Monday Night
Mostly clear, with a low around 73.
Tuesday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 98.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NE Fentress TX
 29.79°N 97.73°W (Elev. 548 ft)
Last Update:
1:38 am CDT Sep 2, 2026
Forecast Valid:
2am CDT Sep 2, 2026-6pm CDT Sep 8, 2026
 
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Additional Resources

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Chance of Precipitation