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Hazardous Weather Conditions

Current conditions at

San Marcos, San Marcos Municipal Airport (KHYI)

Lat: 29.89°NLon: 97.86°WElev: 597ft.

Fair

62°F

17°C

Humidity 73%
Wind Speed S 8 mph
Barometer 29.98 in (1014.9 mb)
Dewpoint 53°F (12°C)
Visibility 10.00 mi
Last update 13 Mar 11:56 pm CDT
Extended Forecast for

5 Miles SW San Marcos TX

Fire Weather Watch March 15, 12:00pm until March 16, 08:00pm
Click here for hazard details and duration
Fire Weather Watch

  • Overnight

    Overnight: Mostly clear, with a low around 52. South southwest wind around 5 mph.

    Low: 52 °F

    Mostly Clear

  • Saturday

    Saturday: Partly sunny, then gradually becoming sunny, with a high near 84. South wind 5 to 15 mph, with gusts as high as 20 mph.

    High: 84 °F

    Becoming
    Sunny

  • Saturday Night

    Saturday Night: Increasing clouds, with a low around 63. South southeast wind around 15 mph, with gusts as high as 25 mph.

    Low: 63 °F

    Increasing
    Clouds

  • Sunday

    Sunday: Cloudy through mid morning, then gradual clearing, with a high near 92. South southwest wind 10 to 15 mph becoming west northwest in the afternoon. Winds could gust as high as 25 mph.

    High: 92 °F

    Gradual
    Clearing

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 39. Breezy, with a north wind around 25 mph, with gusts as high as 45 mph.

    Low: 39 °F

    Mostly Clear
    and Breezy

  • Monday

    Monday: Mostly sunny, with a high near 56. North wind 10 to 20 mph, with gusts as high as 35 mph.

    High: 56 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 35. North northeast wind 5 to 10 mph becoming south southeast after midnight.

    Low: 35 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 67. South wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 67 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 45. South wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 45 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly clear, with a low around 52. South southwest wind around 5 mph.
Saturday
Partly sunny, then gradually becoming sunny, with a high near 84. South wind 5 to 15 mph, with gusts as high as 20 mph.
Saturday Night
Increasing clouds, with a low around 63. South southeast wind around 15 mph, with gusts as high as 25 mph.
Sunday
Cloudy through mid morning, then gradual clearing, with a high near 92. South southwest wind 10 to 15 mph becoming west northwest in the afternoon. Winds could gust as high as 25 mph.
Sunday Night
Mostly clear, with a low around 39. Breezy, with a north wind around 25 mph, with gusts as high as 45 mph.
Monday
Mostly sunny, with a high near 56. North wind 10 to 20 mph, with gusts as high as 35 mph.
Monday Night
Mostly cloudy, with a low around 35. North northeast wind 5 to 10 mph becoming south southeast after midnight.
Tuesday
Mostly sunny, with a high near 67. South wind 5 to 10 mph, with gusts as high as 20 mph.
Tuesday Night
Mostly clear, with a low around 45. South wind 5 to 10 mph, with gusts as high as 20 mph.
Wednesday
Sunny, with a high near 78.
Wednesday Night
Mostly clear, with a low around 52.
Thursday
Sunny, with a high near 83.
Thursday Night
Clear, with a low around 55.
Friday
Sunny, with a high near 88.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles SW San Marcos TX
 29.83°N 97.99°W (Elev. 676 ft)
Last Update:
12:44 am CDT Mar 14, 2026
Forecast Valid:
12am CDT Mar 14, 2026-6pm CDT Mar 20, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation