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

85°F

29°C

Humidity 21%
Wind Speed N 14 G 21 mph
Barometer 29.99 in (1014.8 mb)
Dewpoint 41°F (5°C)
Visibility 10.00 mi
Heat Index82°F (28°C)
Last update 11 May 3:56 pm CDT
Extended Forecast for

6 Miles NW San Marcos TX

  • This Afternoon

    This Afternoon: Sunny, with a high near 83. North wind around 10 mph, with gusts as high as 20 mph.

    High: 83 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 54. North wind 5 to 10 mph becoming light north northwest in the evening.

    Low: 54 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 91. Northwest wind around 5 mph.

    High: 91 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 61. Southwest wind around 5 mph becoming south southeast in the evening.

    Low: 61 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny and hot, with a high near 100. South southwest wind 5 to 15 mph, with gusts as high as 25 mph.

    High: 100 °F

    Hot

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 70. South wind around 10 mph, with gusts as high as 20 mph.

    Low: 70 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny and hot, with a high near 102. South wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 102 °F

    Hot

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 69. South wind around 10 mph, with gusts as high as 20 mph.

    Low: 69 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny and hot, with a high near 100. South wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 100 °F

    Hot

Detailed Forecast

This Afternoon
Sunny, with a high near 83. North wind around 10 mph, with gusts as high as 20 mph.
Tonight
Clear, with a low around 54. North wind 5 to 10 mph becoming light north northwest in the evening.
Monday
Sunny, with a high near 91. Northwest wind around 5 mph.
Monday Night
Mostly clear, with a low around 61. Southwest wind around 5 mph becoming south southeast in the evening.
Tuesday
Sunny and hot, with a high near 100. South southwest wind 5 to 15 mph, with gusts as high as 25 mph.
Tuesday Night
Partly cloudy, with a low around 70. South wind around 10 mph, with gusts as high as 20 mph.
Wednesday
Mostly sunny and hot, with a high near 102. South wind 5 to 10 mph, with gusts as high as 20 mph.
Wednesday Night
Partly cloudy, with a low around 69. South wind around 10 mph, with gusts as high as 20 mph.
Thursday
Mostly sunny and hot, with a high near 100. South wind 5 to 10 mph, with gusts as high as 20 mph.
Thursday Night
Mostly cloudy, with a low around 71.
Friday
Partly sunny, with a high near 98.
Friday Night
Mostly cloudy, with a low around 72.
Saturday
Mostly sunny and hot, with a high near 99.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
6 Miles NW San Marcos TX
 29.95°N 98.02°W (Elev. 935 ft)
Last Update:
2:42 pm CDT May 11, 2025
Forecast Valid:
3pm CDT May 11, 2025-6pm CDT May 17, 2025
 
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