Areas of Severe Weather and Flash Flooding

The threat for severe weather and flash flooding continues in several spots across the country. An enhanced risk of severe storms is likely from KS to TX, w/ very large hail and damaging winds being the main concern, while a slight severe threat covers the Mid-Atlantic. Excessive rainfall w/ flooding remains possible from the southern Appalachians into the Mid-Atlantic and over the central Plains. Read More >

Hazardous Weather Conditions

Current conditions at

San Marcos, San Marcos Municipal Airport (KHYI)

Lat: 29.89°NLon: 97.86°WElev: 597ft.

Fair

80°F

27°C

Humidity 82%
Wind Speed S 8 mph
Barometer 29.92 in (1012.1 mb)
Dewpoint 74°F (23°C)
Visibility 10.00 mi
Heat Index85°F (29°C)
Last update 18 Jun 11:56 pm CDT
Extended Forecast for

2 Miles W San Marcos Municipal Airport TX

  • Overnight

    Overnight: Increasing clouds, with a low around 75. South wind around 5 mph.

    Increasing
    Clouds

    Low: 75 °F

  • Wednesday

    Wednesday: Mostly cloudy, then gradually becoming sunny and hot, with a high near 99. Heat index values as high as 110. South southwest wind 10 to 15 mph, with gusts as high as 20 mph.

    Hot

    High: 99 °F

  • Wednesday
    Night

    Wednesday Night: Increasing clouds, with a low around 77. South wind around 10 mph.

    Increasing
    Clouds

    Low: 77 °F

  • Thursday

    Thursday: Mostly sunny and hot, with a high near 101. Heat index values as high as 110. South wind 10 to 15 mph, with gusts as high as 20 mph.

    Hot

    High: 101 °F

  • Thursday
    Night

    Thursday Night: Partly cloudy, with a low around 76. South southeast wind 10 to 15 mph, with gusts as high as 20 mph.

    Partly Cloudy

    Low: 76 °F

  • Friday

    Friday: Mostly sunny, with a high near 98. South wind around 15 mph, with gusts as high as 25 mph.

    Mostly Sunny

    High: 98 °F

  • Friday
    Night

    Friday Night: Mostly cloudy, with a low around 77. South wind 10 to 15 mph, with gusts as high as 25 mph.

    Mostly Cloudy

    Low: 77 °F

  • Saturday

    Saturday: A 20 percent chance of showers and thunderstorms.  Partly sunny, with a high near 95. South wind 15 to 20 mph, with gusts as high as 25 mph.

    Slight Chance
    T-storms

    High: 95 °F

  • Saturday
    Night

    Saturday Night: A 20 percent chance of showers and thunderstorms.  Mostly cloudy, with a low around 76. South southeast wind 15 to 20 mph, with gusts as high as 25 mph.

    Slight Chance
    T-storms

    Low: 76 °F

Detailed Forecast

Overnight
Increasing clouds, with a low around 75. South wind around 5 mph.
Wednesday
Mostly cloudy, then gradually becoming sunny and hot, with a high near 99. Heat index values as high as 110. South southwest wind 10 to 15 mph, with gusts as high as 20 mph.
Wednesday Night
Increasing clouds, with a low around 77. South wind around 10 mph.
Thursday
Mostly sunny and hot, with a high near 101. Heat index values as high as 110. South wind 10 to 15 mph, with gusts as high as 20 mph.
Thursday Night
Partly cloudy, with a low around 76. South southeast wind 10 to 15 mph, with gusts as high as 20 mph.
Friday
Mostly sunny, with a high near 98. South wind around 15 mph, with gusts as high as 25 mph.
Friday Night
Mostly cloudy, with a low around 77. South wind 10 to 15 mph, with gusts as high as 25 mph.
Saturday
A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 95. South wind 15 to 20 mph, with gusts as high as 25 mph.
Saturday Night
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 76. South southeast wind 15 to 20 mph, with gusts as high as 25 mph.
Sunday
A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 95.
Sunday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 75.
Monday
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 94.
Monday Night
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 73.
Tuesday
A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 94.
Click Map For Forecast
Point Forecast:
2 Miles W San Marcos Municipal Airport TX
 29.9°N 97.91°W (Elev. 640 ft)
11:43 pm CDT Jun 18, 2019
12am CDT Jun 19, 2019-6pm CDT Jun 24, 2019
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database