Weather Forecast for
Zip Code 78666 San Marcos, TX

Overnight: Clear, with a low around 70. South southeast wind around 5 mph becoming calm.

Sunday: Mostly sunny, with a high near 91. Southeast wind around 5 mph.

Sunday Night: Showers and thunderstorms, mainly before 1am. Some of the storms could be severe. Low around 68. Southeast wind around 5 mph becoming north after midnight. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

Monday: Mostly cloudy, then gradually becoming sunny, with a high near 82. North wind 10 to 15 mph, with gusts as high as 20 mph.

Monday Night: Mostly clear, with a low around 64. North northeast wind 5 to 10 mph.

Tuesday: Mostly sunny, with a high near 84. East northeast wind around 5 mph.

Tuesday Night: Mostly clear, with a low around 64. East wind around 5 mph becoming calm in the evening.

Wednesday: Sunny, with a high near 88. Calm wind becoming southeast around 5 mph in the afternoon.

Wednesday Night: Mostly clear, with a low around 66. Southeast wind around 5 mph becoming south southwest after midnight.

Thursday: Mostly sunny, with a high near 89.

Thursday Night: Partly cloudy, with a low around 69.

Friday: Partly sunny, with a high near 90.

Friday Night: A 20 percent chance of showers. Partly cloudy, with a low around 73.

Saturday: Partly sunny, with a high near 90.

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