Local Forecast

San Marcos, TX Weather Forecast & Alerts

Current conditions, 5-day forecast, and active NWS weather alerts for San Marcos, TX.

No Active Alerts

Hour-by-Hour  Current Observation

Monday 8:40 PM CDTMonday 8:40 PM

°F °C
Regional Observations →
78°F

Clear

  • 87° / 75° High / Low
  • 82° Feels Like
  • 0% Chance of Rain

Wind

8 mph

SE

UV Index

0

None

Humidity

89%

Dew 75°F

Sun

6:30 AM · 8:30 PM

Rise · Set

Source: NEW BRAUNFELS (KBAZ). Slider scrubs the next 12 hours.

5-Day Outlook

Through Friday

Local Radar →

Today

87° 75°

Chance of Thunderstorms

Overnight: Mostly Cloudy

Detailed forecast

Today

A chance of showers and thunderstorms. Mostly cloudy, with a high near 87. South southeast wind around 15 mph, with gusts as high as 20 mph. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch possible.

Night

A chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 75. South southeast wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 30%. New rainfall amounts between a tenth and quarter of an inch possible.

Tuesday

91° 75°

Isolated T-storm

Overnight: Mostly Cloudy

Detailed forecast

Tuesday

A slight chance of rain showers between 1pm and 4pm, then a slight chance of showers and thunderstorms. Mostly sunny, with a high near 91. South southeast wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.

Night

A slight chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 75. South southeast wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.

Wednesday

91° 77°

Mostly Cloudy

Overnight: Mostly Cloudy

Detailed forecast

Wednesday

Partly sunny, with a high near 91. South wind 5 to 10 mph, with gusts as high as 20 mph.

Night

Partly cloudy, with a low around 76. South southeast wind 5 to 10 mph, with gusts as high as 25 mph.

Thursday

93° 75°

Partly Sunny

Overnight: Partly Cloudy

Detailed forecast

Thursday

Mostly sunny, with a high near 92. South wind 5 to 15 mph, with gusts as high as 25 mph.

Night

Partly cloudy, with a low around 73. South southeast wind 5 to 15 mph, with gusts as high as 25 mph.

Friday

93° 75°

Isolated T-storm

Overnight: Partly Cloudy

Detailed forecast

Friday

A slight chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 91. South southeast wind 5 to 10 mph. Chance of precipitation is 20%.

Night

A slight chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 73. Chance of precipitation is 20%.

San Marcos, TX Weather Analysis Tools