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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: 6:44 pm CST Nov 21, 2025 Latitude: 29.8832749 Longitude: -97.9413941 View on Google Maps

MouseOver for Detail Forecast
Tonight Saturday Sunday Monday Tuesday Wednesday Thanksgiving Day Friday
20% chance of thunderstorms on Tonight Mostly Sunny on Saturday 30% chance of thunderstorms on Sunday 80% chance of thunderstorms on Monday Sunny on Tuesday Mostly Sunny on Wednesday Mostly Sunny on Thanksgiving Day Mostly Sunny on Friday
Low: 60°F High: 75°F High: 73°F High: 77°F High: 78°F High: 66°F High: 67°F High: 69°F
Low: 58°F Low: 66°F Low: 54°F Low: 50°F Low: 44°F Low: 47°F  
Thunderstorms Mostly Sunny Thunderstorms Thunderstorms Sunny Mostly Sunny Mostly Sunny Mostly Sunny
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Current Conditions at
SAN MARCOS - (KHYI)
72°
Clear
as of 5:56 PM CST
Rel. Humidity: 73%
Dew Point: 63°F
Visibility: 10 Miles
Pressure: 29.97 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
Current Conditions at
NEW BRAUNFELS - (KBAZ)
70°
Partly Cloudy
as of 5:51 PM CST
Rel. Humidity: 73%
Dew Point: 61°F
Visibility: 10 Miles
Pressure: 29.94 in.
Flight Rule: VFR
Wind Data
3 MPH
010° North
Cloud Level(s): Scattered at 11000ft
Current Conditions at
AUSTIN/BERGSTROM - (KAUS)
72°
Mostly Clear
as of 5:53 PM CST
Rel. Humidity: 73%
Dew Point: 63°F
Visibility: 10 Miles
Pressure: 29.95 in.
Flight Rule: VFR
Wind Data
3 MPH
300° Northwest
Cloud Level(s): Few at 3000ft
Current Conditions at
RANDOLPH AFB - (KRND)
72°
Mostly Clear
as of 5:55 PM CST
Rel. Humidity: 78%
Dew Point: 64°F
Visibility: 10 Miles
Pressure: 29.95 in.
Flight Rule: VFR
Wind Data
5 MPH
010° North
Cloud Level(s): Few at 6500ft
20% chance of thunderstorms Tonight Tonight... A slight chance of showers and thunderstorms between midnight and 3am, then a slight chance of showers after 3am. Patchy fog after 4am. Otherwise, partly cloudy, with a low around 60. Calm wind becoming north around 5 mph after midnight. Chance of precipitation is 20%.
Mostly Sunny on Saturday Saturday... Mostly sunny, with a high near 75. North northeast wind 5 to 10 mph, with gusts as high as 20 mph.
Increasing Clouds on Saturday Night Saturday Night... Increasing clouds, with a low around 58. Northeast wind around 5 mph.
30% chance of thunderstorms Sunday Sunday... A slight chance of showers before noon, then a chance of showers and thunderstorms between noon and 3pm, then a chance of showers after 3pm. Cloudy, with a high near 73. Northeast wind 5 to 10 mph becoming southeast in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 30%.
30% chance of rain Sunday Night Sunday Night... A 30 percent chance of showers, mainly after midnight. Cloudy, with a low around 66. Southeast wind 5 to 10 mph.
80% chance of thunderstorms Monday Monday... Showers and possibly a thunderstorm. High near 77. South wind 5 to 10 mph becoming west in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 80%.
20% chance of rain Monday Night Monday Night... A 20 percent chance of showers before midnight. Mostly clear, with a low around 54. West northwest wind around 5 mph becoming calm in the evening.
Sunny on Tuesday Tuesday... Sunny, with a high near 78. North northwest wind around 5 mph.
Cloudy on Tuesday Night Tuesday Night... Partly cloudy, with a low around 50. North wind 5 to 10 mph.
Mostly Sunny on Wednesday Wednesday... Mostly sunny, with a high near 66.
Cloudy on Wednesday Night Wednesday Night... Partly cloudy, with a low around 44.
Mostly Sunny on Thanksgiving Day Thanksgiving Day... Mostly sunny, with a high near 67.
Cloudy on Thursday Night Thursday Night... Partly cloudy, with a low around 47.
Mostly Sunny on Friday Friday... Mostly sunny, with a high near 69.
Current Radar Image


Sun Almanac for San Marcos, Texas
Sunrise: 07:02 AM
Sunset: 5:33 PM
Civil Sunrise:06:37 AM
Civil Sunset: 5:59 PM
Nautical Sunrise: 06:07 AM
Nautical Sunset: 6:28 PM
Astro Sunrise: 05:39 AM
Astro Sunset: 6:57 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.