San Marcos, Texas Weather
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Weather Forecast for San Marcos, Texas : Hays County
Issued: 1:44 am CDT Sep 18, 2025 Latitude: 29.8832749 Longitude: -97.9413941 View on Google Maps

MouseOver for Detail Forecast
Overnight Thursday Friday Saturday Sunday Monday Tuesday Wednesday
Cloudy on Overnight 10% chance of thunderstorms on Thursday Sunny on Friday Sunny on Saturday Sunny on Sunday 30% chance of thunderstorms on Monday 40% chance of thunderstorms on Tuesday 30% chance of thunderstorms on Wednesday
Low: 69°F High: 94°F High: 95°F High: 94°F High: 94°F High: 95°F High: 91°F High: 92°F
Low: 70°F Low: 69°F Low: 71°F Low: 72°F Low: 72°F Low: 69°F  
Cloudy Thunderstorms Sunny Sunny Sunny Thunderstorms Thunderstorms Thunderstorms
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Current Conditions at
SAN MARCOS - (KHYI)
77°
Clear
as of 12:56 AM CDST
Rel. Humidity: 69%
Dew Point: 66°F
Visibility: 10 Miles
Pressure: 30.01 in.
Flight Rule: VFR
Wind Data
6 MPH
210° Southwest
Cloud Level(s): Clear
Current Conditions at
NEW BRAUNFELS - (KBAZ)
75°
Clear
as of 12:51 AM CDST
Rel. Humidity: 73%
Dew Point: 66°F
Visibility: 10 Miles
Pressure: 30.00 in.
Flight Rule: VFR
Wind Data
3 MPH
210° Southwest
Cloud Level(s): Clear
Current Conditions at
AUSTIN/BERGSTROM - (KAUS)
77°
Mostly Clear
as of 12:53 AM CDST
Rel. Humidity: 69%
Dew Point: 66°F
Visibility: 10 Miles
Pressure: 30.00 in.
Flight Rule: VFR
Wind Data
3 MPH
200° South
Cloud Level(s): Few at 20000ft
Current Conditions at
RANDOLPH AFB - (KRND)
79°
Clear
as of 12:55 AM CDST
Rel. Humidity: 69%
Dew Point: 68°F
Visibility: 10 Miles
Pressure: 30.00 in.
Flight Rule: VFR
Wind Data
5 MPH
180° South
Cloud Level(s): Clear
Cloudy on Overnight Overnight... Partly cloudy, with a low around 69. South southwest wind around 5 mph becoming calm.
10% chance of thunderstorms Thursday Thursday... A 10 percent chance of showers and thunderstorms after 4pm. Mostly sunny, with a high near 94. Calm wind becoming south southeast around 5 mph in the afternoon.
10% chance of thunderstorms Thursday Night Thursday Night... A 10 percent chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 70. South southeast wind around 5 mph becoming calm in the evening.
Sunny on Friday Friday... Sunny, with a high near 95. Calm wind becoming east around 5 mph in the afternoon.
Mostly Clear on Friday Night Friday Night... Mostly clear, with a low around 69. East southeast wind around 5 mph becoming calm in the evening.
Sunny on Saturday Saturday... Sunny, with a high near 94. Calm wind becoming southeast around 5 mph in the afternoon.
Mostly Clear on Saturday Night Saturday Night... Mostly clear, with a low around 71. Southeast wind around 5 mph.
Sunny on Sunday Sunday... Sunny, with a high near 94. Calm wind becoming south around 5 mph in the morning.
Mostly Clear on Sunday Night Sunday Night... Mostly clear, with a low around 72. South southeast wind around 5 mph.
30% chance of thunderstorms Monday Monday... A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 95.
30% chance of thunderstorms Monday Night Monday Night... A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 72.
40% chance of thunderstorms Tuesday Tuesday... A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 91.
30% chance of thunderstorms Tuesday Night Tuesday Night... A 30 percent chance of showers and thunderstorms. Mostly clear, with a low around 69.
30% chance of thunderstorms Wednesday Wednesday... A 30 percent chance of showers and thunderstorms. Sunny, with a high near 92.
Current Radar Image


Sun Almanac for San Marcos, Texas
Sunrise: 07:18 AM
Sunset: 7:33 PM
Civil Sunrise:06:54 AM
Civil Sunset: 7:57 PM
Nautical Sunrise: 06:27 AM
Nautical Sunset: 8:25 PM
Astro Sunrise: 05:58 AM
Astro Sunset: 8:53 PM
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