| NWS Forecast for: San Marcos TX Issued by: National Weather Service Austin/San Antonio, TX Last Update: 7:42 pm CDT Jul 13, 2025 |  |
Tonight: A 30 percent chance of showers and thunderstorms, mainly before 1am. Mostly cloudy, with a low around 74. 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 102. 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. Heat index values as high as 102. 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. Southeast wind 5 to 10 mph. 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. Saturday Night: Partly cloudy, with a low around 75. Sunday: Mostly sunny, with a high near 95. | |
| San Marcos TX 29.88°N 97.91°W (Elev. 597 ft) | |
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