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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: 2:44 pm CST Jan 8, 2026 Latitude: 29.8832749 Longitude: -97.9413941 View on Google Maps

MouseOver for Detail Forecast
This Afternoon Tonight Friday Saturday Sunday Monday Tuesday Wednesday
Partly Sunny on This Afternoon Mostly Cloudy on Tonight 40% chance of thunderstorms on Friday Mostly Sunny on Saturday Partly Sunny on Sunday 20% chance of on Monday Partly Sunny on Tuesday Sunny on Wednesday
High: 80°F Low: 59°F High: 75°F High: 59°F High: 61°F High: 60°F High: 62°F High: 70°F
Low: 45°F Low: 38°F Low: 36°F Low: 41°F Low: 44°F  
Partly Sunny Mostly Cloudy Thunderstorms Mostly Sunny Partly Sunny Partly Sunny Partly Sunny Sunny
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Current Conditions at
SAN MARCOS - (KHYI)
77°
Clear
as of 2:56 PM CST
Rel. Humidity: 57%
Dew Point: 61°F
Visibility: 10 Miles
Pressure: 29.75 in.
Flight Rule: VFR
Wind Data
7 MPH
240° Southwest
Cloud Level(s): Clear
Current Conditions at
NEW BRAUNFELS - (KBAZ)
75°
Clear
Haze
as of 2:51 PM CST
Rel. Humidity: 60%
Dew Point: 61°F
Visibility: 6 Miles
Pressure: 29.74 in.
Flight Rule: VFR
Wind Data
3 MPH
220° Southwest
Cloud Level(s): Clear
Current Conditions at
AUSTIN/BERGSTROM - (KAUS)
79°
Cloudy
as of 2:53 PM CST
Rel. Humidity: 54%
Dew Point: 61°F
Visibility: 10 Miles
Pressure: 29.73 in.
Flight Rule: VFR
Wind Data
10 MPH
180° South
Cloud Level(s): Scattered at 4000ft, Scattered at 4900ft, Solid Overcast at 20000ft
Current Conditions at
RANDOLPH AFB - (KRND)
77°
Cloudy
as of 2:55 PM CST
Rel. Humidity: 53%
Dew Point: 59°F
Visibility: 10 Miles
Pressure: 29.75 in.
Flight Rule: VFR
Wind Data
5 MPH
220° Southwest
Cloud Level(s): Broken at 4500ft, Broken at 13000ft, Solid Overcast at 20000ft
Partly Sunny on This Afternoon This Afternoon... Partly sunny, with a high near 80. West southwest wind 5 to 10 mph, with gusts as high as 20 mph.
Mostly Cloudy on Tonight Tonight... Mostly cloudy, with a low around 59. West southwest wind around 5 mph becoming calm in the evening.
40% chance of thunderstorms Friday Friday... A chance of showers and thunderstorms between 9am and 3pm, then a slight chance of showers. Mostly cloudy, with a high near 75. North wind 5 to 10 mph. Chance of precipitation is 40%.
Mostly Cloudy on Friday Night Friday Night... Mostly cloudy, with a low around 45. North wind 5 to 10 mph increasing to 10 to 15 mph after midnight. Winds could gust as high as 30 mph.
Mostly Sunny on Saturday Saturday... Mostly sunny, with a high near 59. North wind 15 to 20 mph, with gusts as high as 35 mph.
Mostly Cloudy on Saturday Night Saturday Night... Mostly cloudy, with a low around 38. North wind around 10 mph, with gusts as high as 20 mph.
Partly Sunny on Sunday Sunday... Partly sunny, with a high near 61. North northwest wind 5 to 10 mph becoming northeast in the afternoon. Winds could gust as high as 20 mph.
Cloudy on Sunday Night Sunday Night... Partly cloudy, with a low around 36. Northeast wind around 5 mph becoming calm in the evening.
20% chance of Monday Monday... A 20 percent chance of showers. Partly sunny, with a high near 60. Calm wind becoming east around 5 mph.
20% chance of rain Monday Night Monday Night... A 20 percent chance of showers. Mostly cloudy, with a low around 41.
Partly Sunny on Tuesday Tuesday... Partly sunny, with a high near 62.
Mostly Clear on Tuesday Night Tuesday Night... Mostly clear, with a low around 44.
Sunny on Wednesday Wednesday... Sunny, with a high near 70.
Current Radar Image


Sun Almanac for San Marcos, Texas
Sunrise: 07:28 AM
Sunset: 5:49 PM
Civil Sunrise:07:02 AM
Civil Sunset: 6:15 PM
Nautical Sunrise: 06:33 AM
Nautical Sunset: 6:44 PM
Astro Sunrise: 06:04 AM
Astro Sunset: 7:13 PM
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