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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: 12:46 am CST Dec 14, 2025 Latitude: 29.8832749 Longitude: -97.9413941 View on Google Maps

MouseOver for Detail Forecast
Overnight Sunday Monday Tuesday Wednesday Thursday Friday Saturday
20% chance of thunderstorms on Overnight Mostly Sunny on Sunday Mostly Sunny on Monday Cloudy on Tuesday Mostly Cloudy on Wednesday Mostly Sunny on Thursday Mostly Sunny on Friday Partly Sunny on Saturday
Low: 46°F High: 44 °F High: 55°F High: 63°F High: 73°F High: 79°F High: 73°F High: 77°F
Low: 32°F Low: 43°F Low: 56°F Low: 61°F Low: 53°F Low: 56°F  
Thunderstorms Mostly Sunny Mostly Sunny Cloudy Mostly Cloudy Mostly Sunny Mostly Sunny Partly Sunny
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Current Conditions at
SAN MARCOS - (KHYI)
64°
Cloudy
as of 1:15 AM CST
Rel. Humidity: 93%
Dew Point: 63°F
Visibility: 10 Miles
Pressure: 30.17 in.
Flight Rule: IFR
Wind Data
14 MPH
030° Northeast
Cloud Level(s): Few at 300ft, Broken at 900ft, Solid Overcast at 1300ft
Current Conditions at
NEW BRAUNFELS - (KBAZ)
64°
Cloudy
Mist
as of 1:33 AM CST
Rel. Humidity: 93%
Dew Point: 63°F
Visibility: 1 3/4 Miles
Pressure: 30.14 in.
Flight Rule: LIFR
Wind Data
12 MPH
030° Northeast
Cloud Level(s): Solid Overcast at 200ft
Current Conditions at
AUSTIN/BERGSTROM - (KAUS)
64°
Cloudy
Mist
as of 12:53 AM CST
Rel. Humidity: 93%
Dew Point: 63°F
Visibility: 3 Miles
Pressure: 30.16 in.
Flight Rule: IFR
Wind Data
13 MPH
Gust: 18 MPH
040° Northeast
Cloud Level(s): Solid Overcast at 500ft
Current Conditions at
RANDOLPH AFB - (KRND)
64°
Mostly Clear
as of 1:25 AM CST
Rel. Humidity: 88%
Dew Point: 61°F
Visibility: 10 Miles
Pressure: 30.13 in.
Flight Rule: VFR
Wind Data
9 MPH
030° Northeast
Cloud Level(s): Few at 400ft
20% chance of thunderstorms Overnight Overnight... A slight chance of showers and thunderstorms. Cloudy, with a low around 46. North northeast wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 20%.
Mostly Sunny on Sunday Sunday... Cloudy, then gradually becoming mostly sunny, with a temperature falling to around 44 by 11am. North wind 15 to 20 mph, with gusts as high as 35 mph.
Mostly Clear on Sunday Night Sunday Night... Mostly clear, with a low around 32. North wind 5 to 10 mph, with gusts as high as 25 mph.
Mostly Sunny on Monday Monday... Mostly sunny, with a high near 55. North wind around 5 mph becoming calm.
Mostly Cloudy on Monday Night Monday Night... Mostly cloudy, with a low around 43. South southeast wind around 5 mph becoming calm after midnight.
Cloudy on Tuesday Tuesday... Cloudy, with a high near 63. Calm wind becoming south around 5 mph in the morning.
Cloudy on Tuesday Night Tuesday Night... Cloudy, with a low around 56. South southeast wind around 5 mph becoming calm in the evening.
Mostly Cloudy on Wednesday Wednesday... Mostly cloudy, with a high near 73. Calm wind becoming south around 5 mph in the morning.
Mostly Cloudy on Wednesday Night Wednesday Night... Mostly cloudy, with a low around 61. South wind 5 to 10 mph.
Mostly Sunny on Thursday Thursday... Mostly sunny, with a high near 79.
Cloudy on Thursday Night Thursday Night... Partly cloudy, with a low around 53.
Mostly Sunny on Friday Friday... Mostly sunny, with a high near 73.
Mostly Cloudy on Friday Night Friday Night... Mostly cloudy, with a low around 56.
Partly Sunny on Saturday Saturday... Partly sunny, with a high near 77.
Current Radar Image


Sun Almanac for San Marcos, Texas
Sunrise: 07:20 AM
Sunset: 5:34 PM
Civil Sunrise:06:53 AM
Civil Sunset: 6:00 PM
Nautical Sunrise: 06:23 AM
Nautical Sunset: 6:30 PM
Astro Sunrise: 05:54 AM
Astro Sunset: 6:59 PM
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