San Marcos, TX

Current conditions, hourly and 7-day forecast, and live radar for San Marcos, TX 78667. Right now: slight chance showers and thunderstorms then partly cloudy, 75°F. Data from the National Weather Service.

• Tonight: A slight chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 75. South southeast wind 0 to 5 mph. Chance of precipitation is 20%.
• Thursday: Mostly sunny, with a high near 96. Heat index values as high as 104. South southeast wind 0 to 5 mph.
• Thursday Night: Mostly clear, with a low around 74. South southeast wind around 5 mph.
• Friday: Mostly sunny, with a high near 97. Heat index values as high as 106. South wind around 5 mph.
• Friday Night: Partly cloudy, with a low around 75. South southeast wind 5 to 10 mph.
• Saturday: Sunny, with a high near 98. South wind 5 to 10 mph, with gusts as high as 20 mph.