Local Forecast

San Marcos, TX Weather Forecast & Alerts

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

No Active Alerts

Hour-by-Hour  Current Observation

Thursday 6:20 PM CDTThursday 6:20 PM

°F °C
Regional Observations →
98°F

Mostly Clear

  • 100° / 77° High / Low
  • 104° Feels Like
  • 0% Chance of Rain

Wind

0 mph

N

UV Index

4

Moderate

Humidity

37%

Dew 68°F

Sun

6:58 AM · 8:14 PM

Rise · Set

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

5-Day Outlook

Through Monday

Local Radar →

Tonight

77°

Mostly Cloudy

Detailed forecast

Tonight

Partly cloudy, with a low around 77. Heat index values as high as 103. South wind 10 to 15 mph, with gusts as high as 30 mph.

Friday

98° 77°

Mostly Cloudy

Overnight: Mostly Cloudy

Detailed forecast

Friday

Mostly sunny, with a high near 97. Heat index values as high as 105. South southeast wind 5 to 10 mph, with gusts as high as 25 mph.

Night

Partly cloudy, with a low around 77. Heat index values as high as 103. South southeast wind 5 to 15 mph, with gusts as high as 25 mph.

Saturday

98° 75°

Partly Sunny

Overnight: Mostly Cloudy

Detailed forecast

Saturday

Mostly sunny, with a high near 98. South southeast wind 5 to 10 mph.

Night

Partly cloudy, with a low around 74. South wind 0 to 10 mph, with gusts as high as 20 mph.

Sunday

98° 75°

Partly Sunny

Overnight: Mostly Clear

Detailed forecast

Sunday

Mostly sunny, with a high near 98. South wind 0 to 5 mph.

Night

Mostly clear, with a low around 74. South wind 0 to 10 mph.

Monday

100° 75°

Sunny

Overnight: Clear

Detailed forecast

Monday

Sunny, with a high near 99. South wind 0 to 5 mph.

Night

Clear, with a low around 75.

San Marcos, TX Weather Analysis Tools