| NWS Forecast for: San Marcos TX Issued by: National Weather Service Austin/San Antonio, TX Last Update: 1:50 pm CDT Jul 13, 2025 |  |
This Afternoon: Showers and thunderstorms likely. Mostly cloudy, with a high near 90. West wind around 5 mph becoming southeast. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms. Tonight: A 30 percent chance of showers and thunderstorms, mainly before 10pm. Mostly cloudy, with a low around 74. South southeast wind around 5 mph becoming calm in the evening. Monday: A 40 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 92. Heat index values as high as 103. Calm wind becoming south southwest around 5 mph in the morning. Monday Night: Mostly cloudy, with a low around 74. South southeast wind around 5 mph. Tuesday: A slight chance of showers between 1pm and 4pm, then a slight chance of showers and thunderstorms after 4pm. Partly sunny, with a high near 93. South southeast wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 20%. Tuesday Night: Mostly cloudy, with a low around 74. South wind 5 to 10 mph. Wednesday: Mostly sunny, with a high near 94. South wind 5 to 10 mph, with gusts as high as 20 mph. Wednesday Night: Mostly clear, with a low around 73. South southeast wind 5 to 10 mph, with gusts as high as 20 mph. Thursday: Mostly sunny, with a high near 94. South wind 5 to 10 mph. Thursday Night: Partly cloudy, with a low around 72. Friday: Mostly sunny, with a high near 93. Friday Night: Partly cloudy, with a low around 74. Saturday: Mostly sunny, with a high near 94. | |
| San Marcos TX 29.9°N 97.91°W (Elev. 640 ft) | |
Visit your local NWS office at: https://www.weather.gov/ewx |
