National Weather Service

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A summary of the widespread and catastrophic flooding in Central Texas during the month of July 2025.

Current conditions at

San Marcos, San Marcos Municipal Airport (KHYI)

Lat: 29.89°NLon: 97.86°WElev: 597ft.

Overcast

78°F

26°C

Humidity	90%
Wind Speed	SW 12 G 18 mph
Barometer	29.88 in (1010.9 mb)
Dewpoint	75°F (24°C)
Visibility	10.00 mi
Heat Index	80°F (27°C)
Last update	19 May 5:56 am CDT

More Information:

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

Extended Forecast for

5 Miles SSE Niederwald TX

Today
High: 91 °F
Chance
T-storms
Tonight
Low: 73 °F
T-storms then
Showers
Wednesday
High: 86 °F
Chance
Showers then
Showers
Likely
Wednesday Night
Low: 72 °F
Showers
Thursday
High: 82 °F
Showers
Thursday Night
Low: 71 °F
Showers
Likely
Friday
High: 85 °F
Slight Chance
T-storms then
Showers
Likely
Friday Night
Low: 71 °F
Showers
Likely
Saturday
High: 82 °F
Showers

Detailed Forecast

Today

A 30 percent chance of showers and thunderstorms, mainly between 1pm and 4pm. Cloudy, then gradually becoming mostly sunny, with a high near 91. Heat index values as high as 100. South southeast wind 10 to 15 mph, with gusts as high as 20 mph.

Tonight

Showers and thunderstorms before 1am, then showers likely and possibly a thunderstorm between 1am and 4am, then a chance of showers and thunderstorms after 4am. Low around 73. Southeast wind 5 to 15 mph becoming north northeast after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 80%. New rainfall amounts between three quarters and one inch possible.

Wednesday

A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 86. Northeast wind 5 to 10 mph becoming east southeast in the morning. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Wednesday Night

Showers and possibly a thunderstorm. Low around 72. East wind around 5 mph becoming calm in the evening. Chance of precipitation is 80%.

Thursday

Showers and possibly a thunderstorm. High near 82. South wind 5 to 10 mph. Chance of precipitation is 90%.

Thursday Night

Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 71. South wind around 5 mph becoming calm in the evening. Chance of precipitation is 70%.

Friday

A slight chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 85. South southwest wind 5 to 10 mph. Chance of precipitation is 70%.

Friday Night

Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 71. South southeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%.

Saturday

Showers and possibly a thunderstorm. High near 82. Calm wind becoming east around 5 mph in the afternoon. Chance of precipitation is 80%.

Saturday Night

Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 70. Chance of precipitation is 70%.

Sunday

Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 82. Chance of precipitation is 70%.

Sunday Night

A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 70.

Memorial Day

Showers and thunderstorms likely. Partly sunny, with a high near 83. Chance of precipitation is 60%.