Severe Weather and Heavy Rain for the Plains and Mid-Atlantic; Building Heat in the West

Severe thunderstorms will remain possible in the Mid-Atlantic through Tuesday. Severe thunderstorms and heavy rain will also be possible in the central/southern Plains on Tuesday and Wednesday. Hazardous heat will linger across the southern U.S. and build across the West through mid-week. Hot and dry weather will create Elevated to Critical fire weather conditions in the Four Corners Region. Read More >

Current conditions at

San Marcos, San Marcos Municipal Airport (KHYI)

Lat: 29.89°NLon: 97.86°WElev: 597ft.

Fair with Haze

80°F

27°C

Humidity 87%
Wind Speed SE 12 mph
Barometer 30.04 in (1016.5 mb)
Dewpoint 76°F (24°C)
Visibility 10.00 mi
Heat Index85°F (29°C)
Last update 22 Jun 10:56 pm CDT
Extended Forecast for

4 Miles S Lockhart TX

  • Tonight

    Tonight: Mostly cloudy, with a low around 77. South wind around 10 mph, with gusts as high as 20 mph.

    Low: 77 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy through mid morning, then gradual clearing, with a high near 95. Heat index values as high as 104. South wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 95 °F

    Becoming
    Sunny

  • Tuesday Night

    Tuesday Night: Increasing clouds, with a low around 75. South wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 75 °F

    Increasing
    Clouds

  • Wednesday

    Wednesday: Mostly cloudy through mid morning, then gradual clearing, with a high near 95. South wind around 10 mph, with gusts as high as 20 mph.

    High: 95 °F

    Becoming
    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 73. South wind 5 to 15 mph, with gusts as high as 20 mph.

    Low: 73 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 96. South wind 5 to 15 mph, with gusts as high as 20 mph.

    High: 96 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 75. South southeast wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 75 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 96. South wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 96 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 75. South southeast wind 10 to 20 mph, with gusts as high as 30 mph.

    Low: 75 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly cloudy, with a low around 77. South wind around 10 mph, with gusts as high as 20 mph.
Tuesday
Mostly cloudy through mid morning, then gradual clearing, with a high near 95. Heat index values as high as 104. South wind 5 to 10 mph, with gusts as high as 20 mph.
Tuesday Night
Increasing clouds, with a low around 75. South wind 10 to 15 mph, with gusts as high as 20 mph.
Wednesday
Mostly cloudy through mid morning, then gradual clearing, with a high near 95. South wind around 10 mph, with gusts as high as 20 mph.
Wednesday Night
Mostly clear, with a low around 73. South wind 5 to 15 mph, with gusts as high as 20 mph.
Thursday
Mostly sunny, with a high near 96. South wind 5 to 15 mph, with gusts as high as 20 mph.
Thursday Night
Mostly clear, with a low around 75. South southeast wind 10 to 15 mph, with gusts as high as 25 mph.
Friday
Mostly sunny, with a high near 96. South wind 10 to 15 mph, with gusts as high as 25 mph.
Friday Night
Mostly clear, with a low around 75. South southeast wind 10 to 20 mph, with gusts as high as 30 mph.
Saturday
Mostly sunny, with a high near 96.
Saturday Night
Mostly clear, with a low around 77.
Sunday
Mostly sunny, with a high near 96.
Sunday Night
Mostly clear, with a low around 78.
Monday
Mostly sunny, with a high near 97.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles S Lockhart TX
 29.82°N 97.68°W (Elev. 548 ft)
11:32 pm CDT Jun 22, 2026
11pm CDT Jun 22, 2026-6pm CDT Jun 29, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database