Heavy Snow in the Central/Southern Rockies; Below Average Temperatures in the Central and Eastern US

Moderate to heavy snowfall is expected in the central/southern Rockies and adjacent High Plains today. Lake-enhanced snowfall is expected downwind of the Great Lakes today. Showers and thunderstorms will be possible this evening into tonight across the western Gulf Coast states. Temperatures across much of the central and eastern CONUS will remain below average and chilly to end the week. Read More >

Current conditions at

San Marcos, San Marcos Municipal Airport (KHYI)

Lat: 29.89°NLon: 97.86°WElev: 597ft.

Fog/Mist

55°F

13°C

Humidity 100%
Wind Speed NE 3 mph
Barometer 29.98 in (1015.1 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 3 Dec 5:56 pm CST
Extended Forecast for

2 Miles WSW San Marcos TX

  • Tonight

    Tonight: A chance of showers and thunderstorms.  Patchy fog after 11pm.  Otherwise, cloudy, with a low around 50. Light and variable wind becoming north 5 to 10 mph after midnight.  Chance of precipitation is 30%.

    Low: 50 °F

    Chance
    Showers and
    Patchy Fog

  • Thursday

    Thursday: A 50 percent chance of showers before 3pm.  Patchy fog before 7am.  Otherwise, cloudy, with a temperature falling to around 48 by 5pm. North wind around 15 mph, with gusts as high as 30 mph.  New precipitation amounts of less than a tenth of an inch possible.

    High: 52 °F

    Chance
    Showers and
    Patchy Fog

  • Thursday Night

    Thursday Night: A 30 percent chance of showers after midnight.  Cloudy, with a low around 43. North wind 5 to 15 mph, with gusts as high as 25 mph.

    Low: 43 °F

    Cloudy then
    Chance
    Showers

  • Friday

    Friday: A 20 percent chance of showers before noon.  Cloudy, with a high near 54. North wind around 5 mph becoming calm  in the morning.

    High: 54 °F

    Slight Chance
    Showers then
    Mostly Cloudy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 44. Calm wind becoming west southwest around 5 mph.

    Low: 44 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 73. Southwest wind 5 to 10 mph.

    High: 73 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 48. South southwest wind 5 to 10 mph becoming northwest after midnight.

    Low: 48 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 68. North wind around 10 mph, with gusts as high as 20 mph.

    High: 68 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 38. North wind 5 to 10 mph.

    Low: 38 °F

    Mostly Clear

Detailed Forecast

Tonight
A chance of showers and thunderstorms. Patchy fog after 11pm. Otherwise, cloudy, with a low around 50. Light and variable wind becoming north 5 to 10 mph after midnight. Chance of precipitation is 30%.
Thursday
A 50 percent chance of showers before 3pm. Patchy fog before 7am. Otherwise, cloudy, with a temperature falling to around 48 by 5pm. North wind around 15 mph, with gusts as high as 30 mph. New precipitation amounts of less than a tenth of an inch possible.
Thursday Night
A 30 percent chance of showers after midnight. Cloudy, with a low around 43. North wind 5 to 15 mph, with gusts as high as 25 mph.
Friday
A 20 percent chance of showers before noon. Cloudy, with a high near 54. North wind around 5 mph becoming calm in the morning.
Friday Night
Mostly cloudy, with a low around 44. Calm wind becoming west southwest around 5 mph.
Saturday
Mostly sunny, with a high near 73. Southwest wind 5 to 10 mph.
Saturday Night
Mostly clear, with a low around 48. South southwest wind 5 to 10 mph becoming northwest after midnight.
Sunday
Sunny, with a high near 68. North wind around 10 mph, with gusts as high as 20 mph.
Sunday Night
Mostly clear, with a low around 38. North wind 5 to 10 mph.
Monday
Sunny, with a high near 61.
Monday Night
Mostly clear, with a low around 38.
Tuesday
Sunny, with a high near 66.
Tuesday Night
Mostly clear, with a low around 46.
Wednesday
Sunny, with a high near 75.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles WSW San Marcos TX
 29.86°N 97.97°W (Elev. 646 ft)
5:44 pm CST Dec 3, 2025
6pm CST Dec 3, 2025-6pm CST Dec 10, 2025
 
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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