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.

Rain and Breezy

58°F

14°C

Humidity 93%
Wind Speed N 21 G 28 mph
Barometer 30.13 in (1019.7 mb)
Dewpoint 56°F (13°C)
Visibility 8.00 mi
Last update 4 Apr 3:56 pm CDT
Extended Forecast for

Mountain City TX

  • This Afternoon

    This Afternoon: A 50 percent chance of showers and thunderstorms. Cloudy, with a steady temperature around 61. North wind around 15 mph, with gusts as high as 25 mph. New rainfall amounts between a quarter and half of an inch possible.

    High: 61 °F

    Chance
    T-storms

  • Tonight

    Tonight: A chance of showers and thunderstorms before 1am, then a slight chance of showers between 1am and 4am. Mostly cloudy, with a low around 53. North northeast wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 30%.

    Low: 53 °F

    Chance
    T-storms then
    Slight Chance
    Showers

  • Sunday

    Sunday: Mostly cloudy, with a high near 67. North northeast wind 15 to 20 mph, with gusts as high as 30 mph.

    High: 67 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Cloudy, with a low around 52. North wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 52 °F

    Cloudy

  • Monday

    Monday: Partly sunny, with a high near 70. Northeast wind around 10 mph, with gusts as high as 20 mph.

    High: 70 °F

    Partly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 47. East northeast wind around 5 mph.

    Low: 47 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 70. East wind around 5 mph.

    High: 70 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 50. East wind around 5 mph becoming calm after midnight.

    Low: 50 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 75. Light and variable wind becoming southeast 5 to 10 mph in the morning.

    High: 75 °F

    Partly Sunny

Detailed Forecast

This Afternoon
A 50 percent chance of showers and thunderstorms. Cloudy, with a steady temperature around 61. North wind around 15 mph, with gusts as high as 25 mph. New rainfall amounts between a quarter and half of an inch possible.
Tonight
A chance of showers and thunderstorms before 1am, then a slight chance of showers between 1am and 4am. Mostly cloudy, with a low around 53. North northeast wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 30%.
Sunday
Mostly cloudy, with a high near 67. North northeast wind 15 to 20 mph, with gusts as high as 30 mph.
Sunday Night
Cloudy, with a low around 52. North wind 5 to 10 mph, with gusts as high as 20 mph.
Monday
Partly sunny, with a high near 70. Northeast wind around 10 mph, with gusts as high as 20 mph.
Monday Night
Partly cloudy, with a low around 47. East northeast wind around 5 mph.
Tuesday
Mostly cloudy, with a high near 70. East wind around 5 mph.
Tuesday Night
Mostly cloudy, with a low around 50. East wind around 5 mph becoming calm after midnight.
Wednesday
Partly sunny, with a high near 75. Light and variable wind becoming southeast 5 to 10 mph in the morning.
Wednesday Night
Mostly cloudy, with a low around 58.
Thursday
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 81.
Thursday Night
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 62.
Friday
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 80.
Friday Night
A 30 percent chance of showers and thunderstorms. Cloudy, with a low around 65.
Saturday
A chance of showers and thunderstorms. Mostly cloudy, with a high near 80.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mountain City TX
 30.04°N 97.89°W (Elev. 837 ft)
Last Update:
3:58 pm CDT Apr 4, 2026
Forecast Valid:
4pm CDT Apr 4, 2026-6pm CDT Apr 11, 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