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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: 4:32 am CST Jan 19, 2026 Latitude: 29.8832749 Longitude: -97.9413941 View on Google Maps

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M.L.King Day Tonight Tuesday Wednesday Thursday Friday Saturday Sunday
Sunny on M.L.King Day Increasing Clouds on Tonight Cloudy on Tuesday 40% chance of rain on Wednesday Partly Sunny on Thursday 20% chance of rain on Friday 40% chance of rain on Saturday 20% chance of rain on Sunday
High: 66°F Low: 42°F High: 57°F High: 65°F High: 69°F High: 69°F High: 46°F High: 42°F
  Low: 51°F Low: 51°F Low: 50°F Low: 39°F Low: 30°F  
Sunny Increasing Clouds Cloudy Rain Partly Sunny Rain Rain Rain
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Current Conditions at
SAN MARCOS - (KHYI)
36°
Clear
as of 4:56 AM CST
Rel. Humidity: 43%
Dew Point: 16°F
Visibility: 10 Miles
Pressure: 30.25 in.
Flight Rule: VFR
Wind Data
6 MPH
180° South
Cloud Level(s): Clear
Current Conditions at
NEW BRAUNFELS - (KBAZ)
36°
Clear
as of 4:51 AM CST
Rel. Humidity: 43%
Dew Point: 16°F
Visibility: 10 Miles
Pressure: 30.24 in.
Flight Rule: VFR
Wind Data
5 MPH
250° West
Cloud Level(s): Clear
Current Conditions at
AUSTIN/BERGSTROM - (KAUS)
34°
Mostly Clear
as of 4:53 AM CST
Rel. Humidity: 50%
Dew Point: 18°F
Visibility: 10 Miles
Pressure: 30.24 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Few at 25000ft
Current Conditions at
RANDOLPH AFB - (KRND)
41°
Clear
as of 4:55 AM CST
Rel. Humidity: 32%
Dew Point: 14°F
Visibility: 10 Miles
Pressure: 30.23 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
Sunny on M.L.King Day M.L.King Day... Sunny, with a high near 66. Light and variable wind becoming south southeast 5 to 10 mph in the afternoon.

Increasing Clouds on Tonight Tonight... Increasing clouds, with a low around 42. East southeast wind around 5 mph becoming north northeast after midnight.

Cloudy on Tuesday Tuesday... Cloudy, with a high near 57. North northeast wind around 5 mph becoming east in the afternoon.

50% chance of rain Tuesday Night Tuesday Night... A 50 percent chance of showers. Cloudy, with a low around 51. South southeast wind around 5 mph.

40% chance of rain Wednesday Wednesday... A 40 percent chance of showers, mainly before noon. Mostly cloudy, with a high near 65. South southeast wind around 5 mph.

Mostly Cloudy on Wednesday Night Wednesday Night... Mostly cloudy, with a low around 51. East southeast wind around 5 mph becoming north after midnight.

Partly Sunny on Thursday Thursday... Partly sunny, with a high near 69. North wind around 5 mph becoming east in the afternoon.

Mostly Cloudy on Thursday Night Thursday Night... Mostly cloudy, with a low around 50. Southeast wind around 5 mph.

20% chance of rain Friday Friday... A 20 percent chance of showers after noon. Mostly cloudy, with a high near 69. South southeast wind 5 to 10 mph, with gusts as high as 20 mph.

40% chance of rain Friday Night Friday Night... A 40 percent chance of showers. Mostly cloudy, with a low around 39.

40% chance of rain Saturday Saturday... A 40 percent chance of showers. Mostly cloudy, with a high near 46.

Mostly Cloudy on Saturday Night Saturday Night... Mostly cloudy, with a low around 30.

20% chance of rain Sunday Sunday... A 20 percent chance of showers. Mostly cloudy, with a high near 42.

Current Radar Image


Sun Almanac for San Marcos, Texas
Sunrise: 07:27 AM
Sunset: 5:58 PM
Civil Sunrise:07:02 AM
Civil Sunset: 6:23 PM
Nautical Sunrise: 06:32 AM
Nautical Sunset: 6:53 PM
Astro Sunrise: 06:04 AM
Astro Sunset: 7:21 PM
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