Severe Thunderstorms and Excessive Rainfall in the Central U.S.; Heat Building in the Western U.S.

A cold front pressing east across the central U.S. will be the focus for areas of strong to severe thunderstorms and excessive rainfall through this weekend. Strong to severe thunderstorms my bring damaging winds, hail, and a few tornadoes while excessive rainfall may lead to areas of flooding. Heat will build across the western U.S. with heat-related watches, warnings, and advisories issued. Read More >

Hazardous Weather Conditions

Flood Watch until July 13, 07:00 PM CDT

Current conditions at

San Marcos, San Marcos Municipal Airport (KHYI)

Lat: 29.89°NLon: 97.86°WElev: 597ft.

Fog/Mist

83°F

28°C

Humidity	94%
Wind Speed	SW 10 mph
Barometer	30.05 in (1016.7 mb)
Dewpoint	81°F (27°C)
Visibility	5.00 mi
Heat Index	96°F (36°C)
Last update	13 Jul 11:56 am CDT

More Information:

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

Extended Forecast for

Niederwald TX

Flood Watch July 13, 12:42pm until July 13, 07:00pm

Click here for hazard details and duration

Flood Watch

Flood Watch July 13, 12:42pm until July 13, 07:00pm
NOW until 7:00pm Sun
Flood Watch
This Afternoon
High: 90 °F
T-storms
Likely
Tonight
Low: 74 °F
Chance
T-storms
Monday
High: 92 °F
Mostly Cloudy
then Chance
T-storms
Monday Night
Low: 75 °F
Mostly Cloudy
Tuesday
High: 93 °F
Mostly Cloudy
then Slight
Chance
T-storms
Tuesday Night
Low: 75 °F
Mostly Cloudy
Wednesday
High: 94 °F
Mostly Sunny
Wednesday Night
Low: 73 °F
Mostly Clear

Detailed Forecast

This Afternoon

Showers and thunderstorms likely, mainly after 1pm. Mostly cloudy, with a high near 90. South southwest wind 5 to 10 mph becoming north northwest. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Tonight

A 30 percent chance of showers and thunderstorms, mainly before 10pm. Mostly cloudy, with a low around 74. South southeast wind around 5 mph.

Monday

A 40 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 92. Heat index values as high as 103. South southwest wind around 5 mph.

Monday Night

Mostly cloudy, with a low around 75. South wind around 5 mph.

Tuesday

A slight chance of showers between 1pm and 4pm, then a slight chance of showers and thunderstorms after 4pm. Partly sunny, with a high near 93. South wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.

Tuesday Night

Mostly cloudy, with a low around 75. South southeast wind 5 to 10 mph, with gusts as high as 20 mph.

Wednesday

Mostly sunny, with a high near 94. South wind 5 to 10 mph, with gusts as high as 20 mph.

Wednesday Night

Mostly clear, with a low around 73. South southeast wind 5 to 10 mph, with gusts as high as 20 mph.

Thursday

Mostly sunny, with a high near 94. South southeast wind 5 to 10 mph.

Thursday Night

Partly cloudy, with a low around 73.

Friday

Mostly sunny, with a high near 93.