Severe Weather Wednesday; Tropical Storm Cristobal; Dangerous Heat Over the Southwest

Clusters of strong to severe thunderstorms are possible Wednesday from parts of the northern and central Plains east into the northern Mid Atlantic. Tropical Storm Cristobal will meander over the Bay of Campeche before lifting north across the Gulf of Mexico on Friday. Excessive heat is forecast Wednesday and Thursday over the Desert Southwest including Phoenix and Las Vegas. Read More >

Current conditions at

San Marcos, San Marcos Municipal Airport (KHYI)

Lat: 29.89°NLon: 97.86°WElev: 597ft.

Fair

80°F

27°C

Humidity 79%
Wind Speed S 8 mph
Barometer 30.01 in (1015.3 mb)
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Heat Index84°F (29°C)
Last update 2 Jun 7:56 pm CDT
Extended Forecast for

San Marcos TX

  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms before 10pm.  Mostly cloudy, with a low around 68. South southeast wind around 5 mph.

    Slight Chance
    T-storms then
    Mostly Cloudy

    Low: 68 °F

  • Wednesday

    Wednesday: Cloudy, then gradually becoming mostly sunny, with a high near 88. Calm wind becoming south southeast around 5 mph in the morning.

    Decreasing
    Clouds

    High: 88 °F

  • Wednesday
    Night

    Wednesday Night: Partly cloudy, with a low around 70. Southeast wind 5 to 10 mph becoming light south southwest  in the evening.

    Partly Cloudy

    Low: 70 °F

  • Thursday

    Thursday: Mostly sunny, with a high near 92. Calm wind becoming southeast around 5 mph.

    Mostly Sunny

    High: 92 °F

  • Thursday
    Night

    Thursday Night: Mostly clear, with a low around 71. Southeast wind around 5 mph becoming calm  after midnight.

    Mostly Clear

    Low: 71 °F

  • Friday

    Friday: Sunny, with a high near 93. Calm wind becoming southeast around 5 mph in the afternoon.

    Sunny

    High: 93 °F

  • Friday
    Night

    Friday Night: Mostly clear, with a low around 71. East southeast wind around 5 mph becoming calm  in the evening.

    Mostly Clear

    Low: 71 °F

  • Saturday

    Saturday: Sunny, with a high near 95. Calm wind becoming east northeast around 5 mph in the afternoon.

    Sunny

    High: 95 °F

  • Saturday
    Night

    Saturday Night: Mostly clear, with a low around 73. East northeast wind around 5 mph becoming calm  in the evening.

    Mostly Clear

    Low: 73 °F

Detailed Forecast

Tonight
A 20 percent chance of showers and thunderstorms before 10pm. Mostly cloudy, with a low around 68. South southeast wind around 5 mph.
Wednesday
Cloudy, then gradually becoming mostly sunny, with a high near 88. Calm wind becoming south southeast around 5 mph in the morning.
Wednesday Night
Partly cloudy, with a low around 70. Southeast wind 5 to 10 mph becoming light south southwest in the evening.
Thursday
Mostly sunny, with a high near 92. Calm wind becoming southeast around 5 mph.
Thursday Night
Mostly clear, with a low around 71. Southeast wind around 5 mph becoming calm after midnight.
Friday
Sunny, with a high near 93. Calm wind becoming southeast around 5 mph in the afternoon.
Friday Night
Mostly clear, with a low around 71. East southeast wind around 5 mph becoming calm in the evening.
Saturday
Sunny, with a high near 95. Calm wind becoming east northeast around 5 mph in the afternoon.
Saturday Night
Mostly clear, with a low around 73. East northeast wind around 5 mph becoming calm in the evening.
Sunday
Sunny, with a high near 97.
Sunday Night
Mostly clear, with a low around 73.
Monday
Mostly sunny and hot, with a high near 99.
Monday Night
Mostly clear, with a low around 75.
Tuesday
Sunny and hot, with a high near 103.
Click Map For Forecast
Point Forecast:
San Marcos TX
 29.88°N 97.94°W (Elev. 577 ft)
6:39 pm CDT Jun 2, 2020
8pm CDT Jun 2, 2020-6pm CDT Jun 9, 2020
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database