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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: 11:44 pm CST Nov 23, 2025 Latitude: 29.8832749 Longitude: -97.9413941 View on Google Maps

MouseOver for Detail Forecast
Overnight Monday Tuesday Wednesday Thanksgiving Day Friday Saturday Sunday
20% chance of rain on Overnight 50% chance of thunderstorms on Monday Sunny on Tuesday Sunny on Wednesday Sunny on Thanksgiving Day Mostly Cloudy on Friday 40% chance of thunderstorms on Saturday 40% chance of rain on Sunday
Low: 64°F High: 76°F High: 80°F High: 65°F High: 67°F High: 71°F High: 76°F High: 74°F
Low: 54°F Low: 51°F Low: 41°F Low: 48°F Low: 61°F Low: 61°F  
Rain Thunderstorms Sunny Sunny Sunny Mostly Cloudy Thunderstorms Rain
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Current Conditions at
SAN MARCOS - (KHYI)
66°
Cloudy
as of 12:03 AM CST
Rel. Humidity: 93%
Dew Point: 64°F
Visibility: 10 Miles
Pressure: 29.99 in.
Flight Rule: IFR
Wind Data
5 MPH
110° East
Cloud Level(s): Solid Overcast at 800ft
Current Conditions at
NEW BRAUNFELS - (KBAZ)
64°
Cloudy
as of 11:51 PM CST
Rel. Humidity: 88%
Dew Point: 61°F
Visibility: 10 Miles
Pressure: 29.97 in.
Flight Rule: IFR
Wind Data
3 MPH
020° North
Cloud Level(s): Solid Overcast at 900ft
Current Conditions at
AUSTIN/BERGSTROM - (KAUS)
66°
Cloudy
as of 11:53 PM CST
Rel. Humidity: 82%
Dew Point: 61°F
Visibility: 10 Miles
Pressure: 29.98 in.
Flight Rule: MVFR
Wind Data
3 MPH
110° East
Cloud Level(s): Solid Overcast at 1100ft
Current Conditions at
RANDOLPH AFB - (KRND)
68°
Cloudy
as of 11:55 PM CST
Rel. Humidity: 82%
Dew Point: 63°F
Visibility: 10 Miles
Pressure: 29.97 in.
Flight Rule: IFR
Wind Data
5 MPH
060° Northeast
Cloud Level(s): Solid Overcast at 800ft
20% chance of rain Overnight Overnight... A 20 percent chance of showers after 3am. Cloudy, with a low around 64. South southeast wind 5 to 10 mph.
50% chance of thunderstorms Monday Monday... A chance of showers, with thunderstorms also possible after 9am. Mostly cloudy, with a high near 76. South wind 5 to 15 mph becoming west northwest in the afternoon. Winds could gust as high as 25 mph. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Mostly Cloudy on Monday Night Monday Night... Mostly cloudy, then gradually becoming clear, with a low around 54. Northwest wind around 5 mph becoming calm in the evening.
Sunny on Tuesday Tuesday... Sunny, with a high near 80. Northwest wind around 5 mph becoming northeast in the afternoon.
Mostly Clear on Tuesday Night Tuesday Night... Mostly clear, with a low around 51. North northeast wind 5 to 15 mph, with gusts as high as 25 mph.
Sunny on Wednesday Wednesday... Sunny, with a high near 65. North northeast wind 10 to 15 mph, with gusts as high as 30 mph.
Mostly Clear on Wednesday Night Wednesday Night... Mostly clear, with a low around 41. North northeast wind around 5 mph.
Sunny on Thanksgiving Day Thanksgiving Day... Sunny, with a high near 67. North northeast wind around 5 mph becoming east in the afternoon.
Cloudy on Thursday Night Thursday Night... Partly cloudy, with a low around 48. East wind around 5 mph.
Mostly Cloudy on Friday Friday... Mostly cloudy, with a high near 71.
30% chance of thunderstorms Friday Night Friday Night... A 30 percent chance of showers and thunderstorms. Cloudy, with a low around 61.
40% chance of thunderstorms Saturday Saturday... A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 76.
30% chance of thunderstorms Saturday Night Saturday Night... A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 61.
40% chance of rain Sunday Sunday... A 40 percent chance of showers. Mostly cloudy, with a high near 74.
Current Radar Image


Sun Almanac for San Marcos, Texas
Sunrise: 07:05 AM
Sunset: 5:33 PM
Civil Sunrise:06:39 AM
Civil Sunset: 5:58 PM
Nautical Sunrise: 06:10 AM
Nautical Sunset: 6:28 PM
Astro Sunrise: 05:41 AM
Astro Sunset: 6:56 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.