San Marcos, Texas Weather
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Weather Forecast for San Marcos, Texas : Hays County
Issued: 5:42 am CDT Jun 18, 2025 Latitude: 29.8832749 Longitude: -97.9413941 View on Google Maps

MouseOver for Detail Forecast
Today Tonight Juneteenth Friday Saturday Sunday Monday Tuesday
Mostly Cloudy on Today Increasing Clouds on Tonight Mostly Cloudy on Juneteenth Mostly Sunny on Friday Mostly Sunny on Saturday Mostly Sunny on Sunday Mostly Sunny on Monday 20% chance of thunderstorms on Tuesday
High: 94°F Low: 77°F High: 94°F High: 94°F High: 94°F High: 94°F High: 94°F High: 94°F
Low: 75°F Low: 73°F Low: 73°F Low: 72°F Low: 73°F  
Mostly Cloudy Increasing Clouds Mostly Cloudy Mostly Sunny Mostly Sunny Mostly Sunny Mostly Sunny Thunderstorms
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Current Conditions at
SAN MARCOS - (KHYI)
77°
Clear
as of 6:56 AM CDST
Rel. Humidity: 100%
Dew Point: 77°F
Visibility: 10 Miles
Pressure: 29.94 in.
Flight Rule: VFR
Wind Data
7 MPH
160° South
Cloud Level(s): Clear
Current Conditions at
NEW BRAUNFELS - (KBAZ)
75°
Clear
as of 6:51 AM CDST
Rel. Humidity: 94%
Dew Point: 73°F
Visibility: 9 Miles
Pressure: 29.91 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
Current Conditions at
AUSTIN/BERGSTROM - (KAUS)
79°
Partly Cloudy
as of 6:53 AM CDST
Rel. Humidity: 88%
Dew Point: 75°F
Visibility: 9 Miles
Pressure: 29.92 in.
Flight Rule: VFR
Wind Data
5 MPH
150° Southeast
Cloud Level(s): Few at 2300ft, Scattered at 2800ft
Current Conditions at
RANDOLPH AFB - (KRND)
75°
Clear
as of 6:55 AM CDST
Rel. Humidity: 88%
Dew Point: 72°F
Visibility: 10 Miles
Pressure: 29.91 in.
Flight Rule: VFR
Wind Data
6 MPH
150° Southeast
Cloud Level(s): Clear
Mostly Cloudy on Today Today... Mostly cloudy, then gradually becoming sunny, with a high near 94. Heat index values as high as 100. South wind 10 to 15 mph, with gusts as high as 25 mph.
Increasing Clouds on Tonight Tonight... Increasing clouds, with a low around 77. South southeast wind 5 to 15 mph, with gusts as high as 25 mph.
Mostly Cloudy on Juneteenth Juneteenth... Mostly cloudy, then gradually becoming sunny, with a high near 94. Heat index values as high as 102. South southeast wind 5 to 10 mph.
Cloudy on Thursday Night Thursday Night... Partly cloudy, with a low around 75. South southeast wind 5 to 10 mph.
Mostly Sunny on Friday Friday... Mostly sunny, with a high near 94. South wind 5 to 10 mph, with gusts as high as 20 mph.
Cloudy on Friday Night Friday Night... Partly cloudy, with a low around 73. South southeast wind 5 to 10 mph, with gusts as high as 20 mph.
Mostly Sunny on Saturday Saturday... Mostly sunny, with a high near 94. South wind 5 to 15 mph, with gusts as high as 25 mph.
Cloudy on Saturday Night Saturday Night... Partly cloudy, with a low around 73. South southeast wind 5 to 15 mph, with gusts as high as 25 mph.
Mostly Sunny on Sunday Sunday... Mostly sunny, with a high near 94. South southeast wind 5 to 15 mph, with gusts as high as 25 mph.
Cloudy on Sunday Night Sunday Night... Partly cloudy, with a low around 72.
Mostly Sunny on Monday Monday... Mostly sunny, with a high near 94.
Cloudy on Monday Night Monday Night... Partly cloudy, with a low around 73.
20% chance of thunderstorms Tuesday Tuesday... A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 94.
Current Radar Image


Sun Almanac for San Marcos, Texas
Sunrise: 06:31 AM
Sunset: 8:35 PM
Civil Sunrise:06:04 AM
Civil Sunset: 9:02 PM
Nautical Sunrise: 05:30 AM
Nautical Sunset: 9:36 PM
Astro Sunrise: 04:55 AM
Astro Sunset: 10:11 PM
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