Widespread Showers in the Eastern US; Severe Thunderstorms in the Plains; Heatwave in the Desert Southwest

Widespread showers and thunderstorms across much of the central and eastern U.S. will produce areas of excessive rainfall, especially in the southern Mid-Atlantic states. Scattered severe thunderstorms are expected from Montana into portions of the central/southern Plains this weekend. A heatwave will build in the Desert Southwest, in parts of Arizona, southeastern California, and southern Nevada. Read More >

Current conditions at

San Marcos, San Marcos Municipal Airport (KHYI)

Lat: 29.89°NLon: 97.86°WElev: 597ft.

Mostly Cloudy

86°F

30°C

Humidity	80%
Wind Speed	SW 7 mph
Barometer	30.01 in (1015.5 mb)
Dewpoint	79°F (26°C)
Visibility	10.00 mi
Heat Index	100°F (38°C)
Last update	14 Jun 10:56 am CDT

More Information:

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

Extended Forecast for

4 Miles SW San Marcos TX

Today
High: 93 °F
Slight Chance
T-storms
Tonight
Low: 75 °F
Increasing
Clouds
Sunday
High: 93 °F
Chance
T-storms
Sunday Night
Low: 74 °F
Increasing
Clouds
Monday
High: 93 °F
Mostly Sunny
Monday Night
Low: 74 °F
Partly Cloudy
Tuesday
High: 94 °F
Mostly Sunny
Tuesday Night
Low: 75 °F
Mostly Clear
Wednesday
High: 95 °F
Mostly Sunny

Detailed Forecast

Today

A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 93. Heat index values as high as 105. South wind around 10 mph.

Tonight

Increasing clouds, with a low around 75. South southeast wind 5 to 10 mph.

Sunday

A 40 percent chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 93. Heat index values as high as 105. South wind 5 to 10 mph.

Sunday Night

Increasing clouds, with a low around 74. South southeast wind 5 to 10 mph.

Monday

Mostly sunny, with a high near 93. South wind 5 to 10 mph.

Monday Night

Partly cloudy, with a low around 74. South southeast wind 5 to 10 mph, with gusts as high as 20 mph.

Tuesday

Mostly sunny, with a high near 94. South wind 5 to 15 mph, with gusts as high as 25 mph.

Tuesday Night

Mostly clear, with a low around 75. South southeast wind 10 to 15 mph, with gusts as high as 25 mph.

Wednesday

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