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.

Partly Cloudy with Haze

97°F

36°C

Humidity 43%
Wind Speed S 12 G 18 mph
Barometer 29.89 in (1011.2 mb)
Dewpoint 71°F (22°C)
Visibility 6.00 mi
Heat Index105°F (41°C)
Last update 29 Jul 3:56 pm CDT
Extended Forecast for

6 Miles NNE Fischer TX

  • Tonight

    Tonight: Increasing clouds, with a low around 74. South wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 74 °F

    Increasing
    Clouds

  • Thursday

    Thursday: Mostly sunny, with a high near 98. Heat index values as high as 101. South wind 5 to 10 mph.

    High: 98 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 73. South wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 73 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 98. Heat index values as high as 104. South southwest wind 5 to 10 mph.

    High: 98 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 75. South wind around 5 mph.

    Low: 75 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 98. Southwest wind around 5 mph becoming west northwest in the afternoon.

    High: 98 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 76. Calm wind.

    Low: 76 °F

    Partly Cloudy
    then Slight
    Chance
    T-storms

  • Sunday

    Sunday: A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 96. North northwest wind around 5 mph becoming northeast in the afternoon.

    High: 96 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 74. Northeast wind around 5 mph becoming calm in the evening.

    Low: 74 °F

    Mostly Clear

Detailed Forecast

Tonight
Increasing clouds, with a low around 74. South wind 5 to 10 mph, with gusts as high as 20 mph.
Thursday
Mostly sunny, with a high near 98. Heat index values as high as 101. South wind 5 to 10 mph.
Thursday Night
Mostly clear, with a low around 73. South wind 5 to 10 mph, with gusts as high as 20 mph.
Friday
Sunny, with a high near 98. Heat index values as high as 104. South southwest wind 5 to 10 mph.
Friday Night
Mostly clear, with a low around 75. South wind around 5 mph.
Saturday
Mostly sunny, with a high near 98. Southwest wind around 5 mph becoming west northwest in the afternoon.
Saturday Night
A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 76. Calm wind.
Sunday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 96. North northwest wind around 5 mph becoming northeast in the afternoon.
Sunday Night
Mostly clear, with a low around 74. Northeast wind around 5 mph becoming calm in the evening.
Monday
Sunny, with a high near 96.
Monday Night
Mostly clear, with a low around 75.
Tuesday
Sunny, with a high near 96.
Tuesday Night
Partly cloudy, with a low around 75.
Wednesday
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:
6 Miles NNE Fischer TX
 30.03°N 98.23°W (Elev. 1020 ft)
Last Update:
2:49 pm CDT Jul 29, 2026
Forecast Valid:
4pm CDT Jul 29, 2026-6pm CDT Aug 5, 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