Notice of NWS' New Version of Forecast
A new version of Forecast is coming soon!
Click here to visit the new site for details.

Severe Thunderstorms With Heavy Rain from Great Lakes to Mid-Atlantic; Excessive Heat For Central/Southern U.S. to Mid-Atlantic

Severe thunderstorms are possible today into Sunday across the upper Great Lakes region to the northern Mid-Atlantic. Damaging winds, large hail, and flooding will be the primary threats with these storms. Meanwhile, dangerous heat will continue through Sunday across the central and southern U.S. into the Mid-Atlantic. Read More >

Hazardous Weather Conditions

Current conditions at

San Marcos, San Marcos Municipal Airport (KHYI)

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

Fair

97°F

36°C

Humidity 37%
Wind Speed SE 10 mph
Barometer 29.95 in
Dewpoint 66°F (19°C)
Visibility 10.00 mi
Heat Index101°F (38°C)
Last update 22 Jul 1:45 pm CDT
Detailed forecast for

Caldwell County

Today
Partly cloudy. Highs in the upper 90s. South winds 5 to 10 mph. Highest heat index readings around 107.
Tonight
Partly cloudy. Lows in the mid 70s. South winds 10 to 15 mph.
Sunday
Partly cloudy. Highs in the upper 90s. South winds 10 to 15 mph. Highest heat index readings around 106.
Sunday Night
Partly cloudy. Lows in the mid 70s. South winds 10 to 15 mph.
Monday
Partly cloudy in the morning then clearing. Highs in the upper 90s. South winds 10 to 15 mph.
Monday Night
Partly cloudy. Lows in the mid 70s.
Tuesday
Partly cloudy with a 20 percent chance of showers and thunderstorms. Highs in the upper 90s. Highest heat index readings around 108 in the afternoon.
Tuesday Night And Wednesday
Partly cloudy. Lows in the mid 70s. Highs in the upper 90s.
Wednesday Night Through Friday
Mostly clear. Lows in the mid 70s. Highs in the upper 90s.



Click Map For Forecast
320 AM CDT Sat Jul 22 2017
 
 

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database