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San Marcos, Texas Weather Forecast
San Marcos, Texas Weather
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Weather Forecast for San Marcos, Texas : Hays County
Issued: 8:32 am CST Jan 12, 2026 Latitude: 29.8832749 Longitude: -97.9413941 View on Google Maps

MouseOver for Detail Forecast
Today Tonight Tuesday Wednesday Thursday Friday Saturday Sunday
Partly Sunny on Today 30% chance of rain on Tonight 20% chance of rain on Tuesday Sunny on Wednesday Sunny on Thursday Sunny on Friday Sunny on Saturday Sunny on Sunday
High: 63°F Low: 46°F High: 60°F High: 70°F High: 61°F High: 66°F High: 60°F High: 65°F
Low: 43°F Low: 38°F Low: 39°F Low: 40°F Low: 37°F  
Partly Sunny Rain Rain Sunny Sunny Sunny Sunny Sunny
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Current Conditions at
SAN MARCOS - (KHYI)
50°
Mostly Cloudy
as of 8:56 AM CST
Rel. Humidity: 43%
Dew Point: 28°F
Visibility: 10 Miles
Pressure: 30.50 in.
Flight Rule: VFR
Wind Data
5 MPH
020° North
Cloud Level(s): Broken at 12000ft
Current Conditions at
NEW BRAUNFELS - (KBAZ)
50°
Partly Cloudy
as of 8:51 AM CST
Rel. Humidity: 43%
Dew Point: 28°F
Visibility: 10 Miles
Pressure: 30.48 in.
Flight Rule: VFR
Wind Data
5 MPH
010° North
Cloud Level(s): Scattered at 12000ft
Current Conditions at
AUSTIN/BERGSTROM - (KAUS)
48°
Mostly Cloudy
as of 8:53 AM CST
Rel. Humidity: 57%
Dew Point: 34°F
Visibility: 10 Miles
Pressure: 30.49 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Scattered at 20000ft, Broken at 25000ft
Current Conditions at
RANDOLPH AFB - (KRND)
50°
Mostly Clear
as of 8:55 AM CST
Rel. Humidity: 34%
Dew Point: 23°F
Visibility: 10 Miles
Pressure: 30.48 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Few at 12000ft
Partly Sunny on Today Today... Partly sunny, with a high near 63. Calm wind becoming east northeast around 5 mph.

30% chance of rain Tonight Tonight... A 30 percent chance of showers, mainly between midnight and 3am. Mostly cloudy, with a low around 46. East southeast wind around 5 mph becoming calm.

20% chance of rain Tuesday Tuesday... A 20 percent chance of showers before noon. Cloudy, then gradually becoming mostly sunny, with a high near 60. Southwest wind around 5 mph.

Mostly Clear on Tuesday Night Tuesday Night... Mostly clear, with a low around 43. West southwest wind around 5 mph.

Sunny on Wednesday Wednesday... Sunny, with a high near 70. West wind 5 to 15 mph becoming north in the morning. Winds could gust as high as 25 mph.

Clear on Wednesday Night Wednesday Night... Clear, with a low around 38. North wind 10 to 15 mph, with gusts as high as 20 mph.

Sunny on Thursday Thursday... Sunny, with a high near 61. North wind 5 to 10 mph becoming south southeast in the afternoon.

Clear on Thursday Night Thursday Night... Clear, with a low around 39. South southwest wind around 5 mph.

Sunny on Friday Friday... Sunny, with a high near 66. Southwest wind 5 to 10 mph becoming northeast in the afternoon. Winds could gust as high as 20 mph.

Cloudy on Friday Night Friday Night... Partly cloudy, with a low around 40.

Sunny on Saturday Saturday... Sunny, with a high near 60.

Mostly Clear on Saturday Night Saturday Night... Mostly clear, with a low around 37.

Sunny on Sunday Sunday... Sunny, with a high near 65.

Current Radar Image


Sun Almanac for San Marcos, Texas
Sunrise: 07:28 AM
Sunset: 5:52 PM
Civil Sunrise:07:03 AM
Civil Sunset: 6:18 PM
Nautical Sunrise: 06:33 AM
Nautical Sunset: 6:47 PM
Astro Sunrise: 06:04 AM
Astro Sunset: 7:16 PM
Any use of the information on this page is at your own risk. This information should not be relied upon in life-threatening situations, potential financial loss situations or in lieu of any officially disseminated information. Visit the National Weather Service for official information.