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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: 12:50 am CST Nov 29, 2025 Latitude: 29.8832749 Longitude: -97.9413941 View on Google Maps

MouseOver for Detail Forecast
Overnight Saturday Sunday Monday Tuesday Wednesday Thursday Friday
70% chance of rain on Overnight 30% chance of thunderstorms on Saturday Mostly Cloudy on Sunday 50% chance of rain on Monday Mostly Sunny on Tuesday Mostly Cloudy on Wednesday 50% chance of rain on Thursday 20% chance of on Friday
Low: 60°F High: 76°F High: 51°F High: 50°F High: 58°F High: 63°F High: 55°F High: 65°F
Low: 41°F Low: 38°F Low: 40°F Low: 38°F Low: 49°F Low: 46°F  
Rain Thunderstorms Mostly Cloudy Rain Mostly Sunny Mostly Cloudy Rain Partly Sunny
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Current Conditions at
SAN MARCOS - (KHYI)
59°
Cloudy
as of 12:56 AM CST
Rel. Humidity: 93%
Dew Point: 57°F
Visibility: 10 Miles
Pressure: 30.09 in.
Flight Rule: MVFR
Wind Data
3 MPH
130° Southeast
Cloud Level(s): Solid Overcast at 2500ft
Current Conditions at
NEW BRAUNFELS - (KBAZ)
61°
Cloudy
as of 12:51 AM CST
Rel. Humidity: 93%
Dew Point: 59°F
Visibility: 10 Miles
Pressure: 30.06 in.
Flight Rule: MVFR
Wind Data
6 MPH
140° Southeast
Cloud Level(s): Few at 400ft, Solid Overcast at 2600ft
Current Conditions at
AUSTIN/BERGSTROM - (KAUS)
63°
Cloudy
as of 12:53 AM CST
Rel. Humidity: 72%
Dew Point: 54°F
Visibility: 10 Miles
Pressure: 30.08 in.
Flight Rule: MVFR
Wind Data
9 MPH
170° South
Cloud Level(s): Solid Overcast at 2700ft
Current Conditions at
RANDOLPH AFB - (KRND)
63°
Cloudy
as of 12:55 AM CST
Rel. Humidity: 88%
Dew Point: 59°F
Visibility: 10 Miles
Pressure: 30.05 in.
Flight Rule: MVFR
Wind Data
12 MPH
140° Southeast
Cloud Level(s): Few at 1200ft, Broken at 1900ft, Solid Overcast at 3200ft
70% chance of rain Overnight Overnight... Showers likely, mainly before 3am. Cloudy, with a low around 60. South southeast wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
30% chance of thunderstorms Saturday Saturday... A chance of showers before 9am, then a chance of showers and thunderstorms after 3pm. Cloudy, then gradually becoming mostly sunny, with a high near 76. South southwest wind 5 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 30%.
50% chance of thunderstorms Saturday Night Saturday Night... A chance of showers and thunderstorms before midnight, then a chance of showers between midnight and 3am. Mostly cloudy, with a low around 41. South southwest wind 5 to 10 mph becoming north 15 to 20 mph in the evening. Winds could gust as high as 30 mph. Chance of precipitation is 50%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Mostly Cloudy on Sunday Sunday... Mostly cloudy, with a high near 51. North northeast wind 15 to 20 mph, with gusts as high as 35 mph.
30% chance of rain Sunday Night Sunday Night... A 30 percent chance of showers after midnight. Cloudy, with a low around 38. North northeast wind 10 to 15 mph, with gusts as high as 25 mph.
50% chance of rain Monday Monday... A 50 percent chance of showers. Cloudy, with a high near 50. North northeast wind 5 to 10 mph.
Mostly Cloudy on Monday Night Monday Night... Mostly cloudy, with a low around 40. North wind 5 to 10 mph.
Mostly Sunny on Tuesday Tuesday... Mostly sunny, with a high near 58. North wind 5 to 10 mph becoming east northeast in the afternoon.
Cloudy on Tuesday Night Tuesday Night... Partly cloudy, with a low around 38. East wind around 5 mph becoming calm in the evening.
Mostly Cloudy on Wednesday Wednesday... Mostly cloudy, with a high near 63.
30% chance of rain Wednesday Night Wednesday Night... A 30 percent chance of showers. Cloudy, with a low around 49.
50% chance of rain Thursday Thursday... A 50 percent chance of showers. Cloudy, with a high near 55.
40% chance of rain Thursday Night Thursday Night... A 40 percent chance of showers. Cloudy, with a low around 46.
20% chance of Friday Friday... A 20 percent chance of showers. Partly sunny, with a high near 65.
Current Radar Image


Sun Almanac for San Marcos, Texas
Sunrise: 07:09 AM
Sunset: 5:32 PM
Civil Sunrise:06:43 AM
Civil Sunset: 5:58 PM
Nautical Sunrise: 06:13 AM
Nautical Sunset: 6:27 PM
Astro Sunrise: 05:44 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.