Severe Weather and Excessive Rain from the Southern Plains into the Mississippi Valley

Severe thunderstorms may produce tornadoes, some strong, damaging wind gusts above 70 mph, and very large hail exceeding 2 inches in diameter, and intense rainfall that may cause flash flooding tonight across much of the southern Plains and lower Missouri Valley. The severe thunderstorms and excessive rainfall will expand from east Texas into the Mississippi Valley on Sunday. Read More >

Hazardous Weather Conditions

Hazardous Weather Outlook

Current conditions at

San Marcos, San Marcos Municipal Airport (KHYI)

Lat: 29.89° N Lon: 97.86° W Elev: 597 ft.

Overcast

77°F

25°C

Humidity	85%
Wind Speed	S 18 G 26 mph
Barometer	29.79 in (1008.0 mb)
Dewpoint	72°F (22°C)
Visibility	10.00 mi
Heat Index	78°F (26°C)
Last update	27 Apr 10:56 pm CDT

More Information:

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

Detailed forecast for

Hays County

Tonight

Cloudy. Showers likely with a chance of thunderstorms after midnight. Breezy with lows in the upper 60s. South winds 15 to 25 mph with gusts up to 45 mph. Chance of rain 70 percent.

Sunday

Becoming partly cloudy in the afternoon. A chance of thunderstorms. Showers, mainly in the morning. Highs in the lower 80s. South winds 10 to 15 mph. Chance of rain 80 percent.

Sunday Night

Partly cloudy with a slight chance of showers and thunderstorms in the evening, then mostly cloudy after midnight. Lows in the mid 60s. South winds 5 to 10 mph.

Monday

Partly cloudy in the morning, then mostly sunny with a slight chance of showers and thunderstorms in the afternoon. Highs in the mid 80s. Southwest winds around 5 mph, becoming southeast in the afternoon.

Monday Night

Mostly clear in the evening, then becoming mostly cloudy. Lows in the upper 60s. Southeast winds 5 to 10 mph.

Tuesday

Mostly cloudy in the morning, then becoming partly cloudy. A slight chance of showers and thunderstorms. Highs in the mid 80s.

Tuesday Night

Partly cloudy in the evening, then becoming cloudy. Lows around 70.

Wednesday And Wednesday Night

Mostly cloudy with a chance of showers and thunderstorms. Highs in the mid 80s. Lows in the lower 70s. Chance of rain 30 percent.

Thursday And Thursday Night

Mostly cloudy with a chance of showers and thunderstorms. Highs in the mid 80s. Lows in the upper 60s. Chance of rain 40 percent.

Friday

Mostly cloudy with a slight chance of showers and thunderstorms in the morning, then partly cloudy with a chance of showers and thunderstorms in the afternoon. Highs in the lower 80s. Chance of rain 30 percent.

Friday Night And Saturday

Mostly cloudy with a slight chance of showers and thunderstorms. Lows in the upper 60s. Highs in the mid 80s.