Flooding Threat Along the Gulf Coast, Southern Rockies and High Plains; Cooler Weather in the Central and Eastern U.S.

Strong thunderstorms may bring excessive rainfall and flooding over parts of the northern Gulf Coast today and over parts of the southern Rockies into the High Plains today through the weekend. A refreshingly cool and dry air mass will continue to produce below average temperatures across the central and eastern U.S. through the weekend. Read More >

Current conditions at

San Marcos, San Marcos Municipal Airport (KHYI)

Lat: 29.89°NLon: 97.86°WElev: 597ft.

Fair

89°F

32°C

Humidity	57%
Wind Speed	S 10 mph
Barometer	29.98 in (1014.2 mb)
Dewpoint	72°F (22°C)
Visibility	10.00 mi
Heat Index	96°F (36°C)
Last update	30 Aug 10:56 am CDT

More Information:

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

Extended Forecast for

3 Miles NNW Luling TX

Today
High: 99 °F
Slight Chance
T-storms
Tonight
Low: 75 °F
Slight Chance
T-storms then
Slight Chance
Showers
Sunday
High: 94 °F
Chance
Showers then
Showers
Likely
Sunday Night
Low: 72 °F
Chance
T-storms
Labor Day
High: 88 °F
Showers
Likely
Monday Night
Low: 70 °F
Slight Chance
Showers
Tuesday
High: 93 °F
Mostly Sunny
Tuesday Night
Low: 67 °F
Mostly Clear
Wednesday
High: 92 °F
Sunny

Detailed Forecast

Today

A slight chance of showers between 1pm and 4pm, then a slight chance of showers and thunderstorms after 4pm. Mostly sunny and hot, with a high near 99. Heat index values as high as 105. South southeast wind around 5 mph. Chance of precipitation is 20%.

Tonight

A slight chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am. Partly cloudy, with a low around 75. East southeast wind around 5 mph becoming calm after midnight. Chance of precipitation is 20%.

Sunday

A chance of showers before 10am, then a chance of showers and thunderstorms between 10am and 1pm, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 94. Heat index values as high as 103. Calm wind becoming east northeast around 5 mph in the afternoon. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Sunday Night

A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 72. East wind around 5 mph becoming calm in the evening.

Labor Day

Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 88. Calm wind becoming north around 5 mph in the morning. Chance of precipitation is 60%.

Monday Night

A 20 percent chance of showers before 1am. Mostly cloudy, with a low around 70. Northeast wind around 5 mph becoming calm in the evening.

Tuesday

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

Tuesday Night

Mostly clear, with a low around 67. North northeast wind around 5 mph becoming calm in the evening.

Wednesday

Sunny, with a high near 92. North wind 5 to 10 mph.

Wednesday Night

Mostly clear, with a low around 66.

Thursday

Mostly sunny, with a high near 93.