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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: 5:42 am CST Jan 20, 2026 Latitude: 29.8832749 Longitude: -97.9413941 View on Google Maps

MouseOver for Detail Forecast
Today Tonight Wednesday Thursday Friday Saturday Sunday Monday
Mostly Cloudy on Today 30% chance of rain on Tonight 30% chance of rain on Wednesday Partly Sunny on Thursday 40% chance of rain on Friday 70% chance of rain on Saturday Partly Sunny on Sunday Mostly Sunny on Monday
High: 60°F Low: 52°F High: 69°F High: 71°F High: 68°F High: 40°F High: 39°F High: 45°F
Low: 55°F Low: 56°F Low: 37°F Low: 24°F Low: 24°F  
Mostly Cloudy Rain Rain Partly Sunny Rain Rain Partly Sunny Mostly Sunny
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Current Conditions at
SAN MARCOS - (KHYI)
43°
Partly Cloudy
as of 4:56 AM CST
Rel. Humidity: 41%
Dew Point: 21°F
Visibility: 10 Miles
Pressure: 30.38 in.
Flight Rule: VFR
Wind Data
7 MPH
010° North
Cloud Level(s): Scattered at 3900ft
Current Conditions at
NEW BRAUNFELS - (KBAZ)
43°
Clear
as of 4:51 AM CST
Rel. Humidity: 48%
Dew Point: 25°F
Visibility: 10 Miles
Pressure: 30.36 in.
Flight Rule: VFR
Wind Data
8 MPH
020° North
Cloud Level(s): Clear
Current Conditions at
AUSTIN/BERGSTROM - (KAUS)
39°
Partly Cloudy
as of 4:53 AM CST
Rel. Humidity: 41%
Dew Point: 18°F
Visibility: 10 Miles
Pressure: 30.38 in.
Flight Rule: VFR
Wind Data
6 MPH
350° North
Cloud Level(s): Few at 6000ft, Scattered at 25000ft
Current Conditions at
RANDOLPH AFB - (KRND)
46°
Feels like 41°F
Mostly Clear
as of 4:55 AM CST
Rel. Humidity: 42%
Dew Point: 25°F
Visibility: 10 Miles
Pressure: 30.34 in.
Flight Rule: VFR
Wind Data
9 MPH
020° North
Cloud Level(s): Few at 6500ft
Mostly Cloudy on Today Today... Mostly cloudy, with a high near 60. North wind around 5 mph becoming east southeast in the afternoon.
30% chance of rain Tonight Tonight... A 30 percent chance of showers, mainly after midnight. Patchy fog between 3am and 5am. Otherwise, cloudy, with a low around 52. East southeast wind around 5 mph.
30% chance of rain Wednesday Wednesday... A 30 percent chance of showers. Cloudy, then gradually becoming mostly sunny, with a high near 69. South wind around 5 mph becoming east in the afternoon.
Mostly Cloudy on Wednesday Night Wednesday Night... Mostly cloudy, with a low around 55. East northeast wind around 5 mph becoming calm.
Partly Sunny on Thursday Thursday... Partly sunny, with a high near 71. North wind around 5 mph becoming southeast in the afternoon.
Mostly Cloudy on Thursday Night Thursday Night... Mostly cloudy, with a low around 56. East southeast wind around 5 mph.
40% chance of rain Friday Friday... A 40 percent chance of showers, mainly after noon. Cloudy, with a high near 68. East southeast wind 5 to 10 mph, with gusts as high as 20 mph.
70% chance of rain Friday Night Friday Night... Showers likely. Cloudy, with a low around 37. North northeast wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 70%.
70% chance of rain Saturday Saturday... Showers likely, mainly before noon. Cloudy, with a high near 40. North wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 70%.
40% chance of freezing rain Saturday Night Saturday Night... A chance of freezing rain. Mostly cloudy, with a low around 24. Chance of precipitation is 40%.
Partly Sunny on Sunday Sunday... Partly sunny, with a high near 39.
Cloudy on Sunday Night Sunday Night... Partly cloudy, with a low around 24.
Mostly Sunny on Monday Monday... Mostly sunny, with a high near 45.
Current Radar Image


Sun Almanac for San Marcos, Texas
Sunrise: 07:27 AM
Sunset: 5:59 PM
Civil Sunrise:07:01 AM
Civil Sunset: 6:24 PM
Nautical Sunrise: 06:32 AM
Nautical Sunset: 6:53 PM
Astro Sunrise: 06:04 AM
Astro Sunset: 7:22 PM
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