Severe Thunderstorms and Heavy Rain in the Central Plains; Dry Thunderstorms and Critical Fire Weather in the West

Severe thunderstorms and heavy rain may produce large to very-large hail, severe winds, tornadoes and numerous instances of flash flooding across portions of the central Plains. Scattered slow-moving storms will continue to bring a flash flooding threat to the central Gulf Coast. Elevated to critical fire weather conditions are expected across much of the western U.S.. Read More >

Current conditions at

San Marcos, San Marcos Municipal Airport (KHYI)

Lat: 29.89°NLon: 97.86°WElev: 597ft.

Mostly Cloudy with Haze

80°F

27°C

Humidity	90%
Wind Speed	Calm
Barometer	29.91 in (1012.2 mb)
Dewpoint	77°F (25°C)
Visibility	10.00 mi
Heat Index	86°F (30°C)
Last update	19 Jun 9:56 pm CDT

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

2 Miles SW San Marcos Municipal Airport TX

Tonight
Low: 75 °F
Chance
T-storms
Saturday
High: 90 °F
Chance
Showers then
Chance
T-storms
Saturday Night
Low: 77 °F
Mostly Cloudy
then Slight
Chance
Showers
Sunday
High: 93 °F
Slight Chance
T-storms then
Mostly Sunny
Sunday Night
Low: 77 °F
Partly Cloudy
Monday
High: 95 °F
Mostly Sunny
Monday Night
Low: 77 °F
Partly Cloudy
Tuesday
High: 95 °F
Mostly Sunny
Tuesday Night
Low: 76 °F
Mostly Clear

Detailed Forecast

Tonight

A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 75. Southeast wind around 5 mph.

Saturday

A 30 percent chance of showers and thunderstorms, mainly after 1pm. Mostly cloudy, with a high near 90. Heat index values as high as 101. South southeast wind 5 to 10 mph.

Saturday Night

A 20 percent chance of showers after 4am. Mostly cloudy, with a low around 77. South wind 5 to 10 mph.

Sunday

A 20 percent chance of showers and thunderstorms before 10am. Mostly sunny, with a high near 93. Heat index values as high as 104. South wind 5 to 15 mph, with gusts as high as 25 mph.

Sunday Night

Partly cloudy, with a low around 77. South wind around 15 mph, with gusts as high as 25 mph.

Monday

Mostly sunny, with a high near 95. South wind 10 to 15 mph, with gusts as high as 25 mph.

Monday Night

Partly cloudy, with a low around 77. South southeast wind 10 to 15 mph, with gusts as high as 25 mph.

Tuesday

Mostly sunny, with a high near 95. South wind 5 to 10 mph.

Tuesday Night

Mostly clear, with a low around 76. South southeast wind 5 to 15 mph, with gusts as high as 20 mph.

Wednesday

Mostly sunny, with a high near 95.