Severe Weather Threat Shifted to the Southern Plains and Mid-South; Critical Fire Weather in the Southern Plains

Multiple rounds of strong to severe thunderstorms may produce very large hail, swaths of damaging wind, a few tornadoes and heavy rain across parts of Texas into the lower Mississippi and Tennessee Valleys. Gusty winds and dry conditions will continue to promote elevated to critical fire weather conditions across the southern High Plains. Read More >

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 90%
Wind Speed S 6 mph
Barometer 29.86 in (1010.5 mb)
Dewpoint 74°F (23°C)
Visibility 7.00 mi
Heat Index78°F (26°C)
Last update 29 Apr 3:56 am CDT
Detailed forecast for

Caldwell County

Today
Cloudy. A slight chance of showers and thunderstorms this morning, then a chance of showers and thunderstorms this afternoon. Highs in the mid 80s. Southeast winds around 5 mph, becoming northeast this afternoon. Chance of rain 50 percent.
Tonight
Cloudy. A slight chance of showers and thunderstorms in the evening. Lows in the upper 60s. Northeast winds 5 to 10 mph. Chance of rain 20 percent.
Thursday
Cloudy with a slight chance of thunderstorms. A slight chance of showers in the morning, then a chance of showers in the afternoon. Highs in the lower 80s. Northeast winds 5 to 10 mph. Chance of rain 30 percent.
Thursday Night
Cloudy with a chance of thunderstorms. A chance of showers in the evening, then showers likely after midnight. Lows in the lower 60s. Northeast winds around 10 mph. Chance of rain 70 percent.
Friday
Showers with a chance of thunderstorms. Cooler with highs in the upper 60s. Temperature falling into the mid 60s in the afternoon. Northeast winds 15 to 20 mph. Chance of rain 90 percent.
Friday Night
Mostly cloudy with a chance of showers and thunderstorms in the evening, then partly cloudy after midnight. Cooler with lows in the lower 50s. Chance of rain 40 percent.
Saturday
Partly cloudy. Highs around 70.
Saturday Night
Mostly clear. Lows in the upper 40s.
Sunday And Sunday Night
Partly cloudy. Highs in the mid 70s. Lows in the mid 50s.
Monday
Mostly cloudy in the morning, then becoming partly cloudy. Highs in the lower 80s.
Monday Night And Tuesday
Mostly cloudy. Lows in the lower 60s. Highs in the upper 80s.



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348 AM CDT Wed Apr 29 2026
 
 

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database