10-Day Weather Forecast - San Marcos, TX

Partly cloudy. Highs in the upper 50s. Northeast winds around 5 mph becoming southeast in the afternoon.

Mostly cloudy. Not as cool with lows in the lower 40s. South winds around 5 mph.

Cloudy. Highs around 60. South winds 5 to 10 mph.

A slight chance of thunderstorms in the evening. Cloudy with a slight chance of showers. Not as cool. Near steady temperature in the mid 50s. South winds around 5 mph.

Cloudy with a slight chance of showers in the morning then partly cloudy in the afternoon. Not as cool with highs in the lower 70s.

Partly cloudy. Lows in the upper 50s.

Partly cloudy in the morning then clearing. Highs in the upper 70s.

Clear cooler with lows in the mid 40s.

Mostly sunny. Cooler with highs in the upper 60s.

Partly cloudy. Lows in the mid 50s. Highs in the mid 70s.

Partly cloudy. Lows in the mid 50s. Highs in the mid 70s.

Partly cloudy. Lows in the mid 50s. Highs in the mid 70s.

Partly cloudy. Lows in the mid 50s. Highs in the mid 70s.

Partly cloudy. Low temperature around 58F. Dew point will be around 53F with an average humidity of 76%. Winds will be 3 mph from the NE.

Mostly cloudy. High temperature around 72F. Dew point will be around 58F with an average humidity of 70%. Winds will be 4 mph from the SE.

Mostly clear. Low temperature around 62F. Dew point will be around 62F with an average humidity of 91%. Winds will be 6 mph from the S.

Cloudy. High temperature around 75F. Dew point will be around 65F with an average humidity of 80%. Winds will be 6 mph from the S.

Partly cloudy. Low temperature around 62F. Dew point will be around 62F with an average humidity of 90%. Winds will be 3 mph from the S.