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

81°F

27°C

Humidity 85%
Wind Speed SE 7 mph
Barometer 29.91 in (1011.9 mb)
Dewpoint 76°F (24°C)
Visibility 10.00 mi
Heat Index87°F (31°C)
Last update 18 Jun 10:56 pm CDT
Extended Forecast for

3 Miles NNW San Marcos Municipal Airport TX

  • Tonight

    Tonight: Partly cloudy, with a low around 75. South wind around 5 mph.

    Partly Cloudy

    Low: 75 °F

  • Wednesday

    Wednesday: Mostly sunny, with a high near 98. Heat index values as high as 107. South southwest wind 10 to 15 mph, with gusts as high as 20 mph.

    Mostly Sunny

    High: 98 °F

  • Wednesday
    Night

    Wednesday Night: Partly cloudy, with a low around 76. South wind around 10 mph.

    Partly Cloudy

    Low: 76 °F

  • Thursday

    Thursday: Mostly sunny and hot, with a high near 100. Heat index values as high as 110. South wind 10 to 15 mph, with gusts as high as 20 mph.

    Hot

    High: 100 °F

  • Thursday
    Night

    Thursday Night: Partly cloudy, with a low around 75. South southeast wind 10 to 15 mph, with gusts as high as 20 mph.

    Partly Cloudy

    Low: 75 °F

  • Friday

    Friday: Mostly sunny, with a high near 97. South wind around 15 mph, with gusts as high as 25 mph.

    Mostly Sunny

    High: 97 °F

  • Friday
    Night

    Friday Night: Mostly cloudy, with a low around 76. South wind 10 to 15 mph, with gusts as high as 25 mph.

    Mostly Cloudy

    Low: 76 °F

  • Saturday

    Saturday: A 20 percent chance of showers and thunderstorms.  Partly sunny, with a high near 94. South wind 15 to 20 mph, with gusts as high as 25 mph.

    Slight Chance
    T-storms

    High: 94 °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

Tonight
Partly cloudy, with a low around 75. South wind around 5 mph.
Wednesday
Mostly sunny, with a high near 98. Heat index values as high as 107. South southwest wind 10 to 15 mph, with gusts as high as 20 mph.
Wednesday Night
Partly cloudy, with a low around 76. South wind around 10 mph.
Thursday
Mostly sunny and hot, with a high near 100. 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 75. South southeast wind 10 to 15 mph, with gusts as high as 20 mph.
Friday
Mostly sunny, with a high near 97. South wind around 15 mph, with gusts as high as 25 mph.
Friday Night
Mostly cloudy, with a low around 76. 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 94. 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 94.
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 93.
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:
3 Miles NNW San Marcos Municipal Airport TX
 29.95°N 97.89°W (Elev. 646 ft)
11:43 pm CDT Jun 18, 2019
11pm CDT Jun 18, 2019-6pm CDT Jun 25, 2019
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database