7-Day Forecast 29.88°N 97.94°W (Text-Only)
NWS Forecast for: San Marcos TX
Issued by: National Weather Service Austin/San Antonio, TX
Last Update: 12:02 pm CDT Jul 3, 2025


This Afternoon: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 87. Southeast wind around 10 mph, with gusts as high as 20 mph. New rainfall amounts between a quarter and half of an inch possible.

Tonight: A chance of showers and thunderstorms before 10pm, then a slight chance of showers. Mostly cloudy, with a low around 75. Southeast wind 5 to 10 mph. Chance of precipitation is 30%.

Independence Day: A chance of showers, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 88. South southeast wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.

Friday Night: A slight chance of showers between 1am and 4am, then a slight chance of showers and thunderstorms after 4am. Mostly cloudy, with a low around 74. South wind 5 to 10 mph. Chance of precipitation is 20%.

Saturday: A slight chance of showers and thunderstorms before 7am, then a slight chance of showers between 7am and 1pm, then a chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 88. South southeast wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.

Saturday Night: Mostly cloudy, with a low around 73. South southeast wind 5 to 10 mph.

Sunday: Partly sunny, with a high near 92. Calm wind becoming south southeast around 5 mph in the morning.

Sunday Night: Partly cloudy, with a low around 71. Southeast wind around 5 mph becoming calm after midnight.

Monday: Mostly sunny, with a high near 94. Calm wind becoming south southeast around 5 mph in the afternoon.

Monday Night: Mostly clear, with a low around 72.

Tuesday: Sunny, with a high near 95.

Tuesday Night: Partly cloudy, with a low around 73.

Wednesday: Sunny, with a high near 97.



San Marcos TX
 29.88°N 97.94°W (Elev. 577 ft)

Visit your local NWS office at: https://www.weather.gov/ewx