Tracking Two Storms Impacting the Central and Eastern U.S. Through This Weekend

Two storm systems will track through the central and eastern U.S. through this weekend with areas of gusty winds, rain, and heavy snow. Severe thunderstorms are forecast Friday from the central Gulf Coast into parts of the lower Mississippi, Tennessee and Ohio Valleys. Heavy to excessive rainfall is forecast from the lower Mississippi River Valley to the Tennessee Valley which may bring flooding. Read More >

Current conditions at

San Marcos, San Marcos Municipal Airport (KHYI)

Lat: 29.89°NLon: 97.86°WElev: 597ft.

Fair

64°F

18°C

Humidity 81%
Wind Speed N 7 mph
Barometer 29.88 in (1011.3 mb)
Dewpoint 58°F (14°C)
Visibility 10.00 mi
Last update 9 Jan 1:56 am CST
Extended Forecast for

4 Miles SSW San Marcos TX

  • Overnight

    Overnight: Cloudy, with a low around 58. Calm wind.

    Low: 58 °F

    Cloudy

  • Friday

    Friday: A chance of showers and thunderstorms before noon, then showers likely and possibly a thunderstorm between noon and 3pm, then a chance of showers and thunderstorms after 3pm.  Cloudy, with a high near 74. North northeast wind around 5 mph.  Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 74 °F

    Chance
    T-storms then
    Showers
    Likely

  • Friday Night

    Friday Night: A 20 percent chance of showers before 9pm.  Mostly cloudy, with a low around 45. North wind 5 to 10 mph increasing to 15 to 20 mph after midnight. Winds could gust as high as 30 mph.

    Low: 45 °F

    Slight Chance
    Showers then
    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 59. North wind 15 to 20 mph, with gusts as high as 35 mph.

    High: 59 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 33. North wind around 10 mph, with gusts as high as 20 mph.

    Low: 33 °F

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 62. North wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 62 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 37. Northeast wind around 5 mph becoming calm  in the evening.

    Low: 37 °F

    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 62. Calm wind becoming south southeast around 5 mph.

    High: 62 °F

    Partly Sunny

  • Monday Night

    Monday Night: A 20 percent chance of showers after midnight.  Mostly cloudy, with a low around 41. South southeast wind around 5 mph becoming calm.

    Low: 41 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

Detailed Forecast

Overnight
Cloudy, with a low around 58. Calm wind.
Friday
A chance of showers and thunderstorms before noon, then showers likely and possibly a thunderstorm between noon and 3pm, then a chance of showers and thunderstorms after 3pm. Cloudy, with a high near 74. North northeast wind around 5 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday Night
A 20 percent chance of showers before 9pm. Mostly cloudy, with a low around 45. North wind 5 to 10 mph increasing to 15 to 20 mph after midnight. Winds could gust as high as 30 mph.
Saturday
Mostly sunny, with a high near 59. North wind 15 to 20 mph, with gusts as high as 35 mph.
Saturday Night
Mostly cloudy, with a low around 33. North wind around 10 mph, with gusts as high as 20 mph.
Sunday
Partly sunny, with a high near 62. North wind 5 to 10 mph, with gusts as high as 20 mph.
Sunday Night
Mostly cloudy, with a low around 37. Northeast wind around 5 mph becoming calm in the evening.
Monday
Partly sunny, with a high near 62. Calm wind becoming south southeast around 5 mph.
Monday Night
A 20 percent chance of showers after midnight. Mostly cloudy, with a low around 41. South southeast wind around 5 mph becoming calm.
Tuesday
Partly sunny, with a high near 63.
Tuesday Night
Mostly clear, with a low around 44.
Wednesday
Sunny, with a high near 69.
Wednesday Night
Mostly clear, with a low around 39.
Thursday
Sunny, with a high near 66.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SSW San Marcos TX
 29.83°N 97.94°W (Elev. 610 ft)
12:44 am CST Jan 9, 2026
2am CST Jan 9, 2026-6pm CST Jan 15, 2026
 
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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