National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Dangerous Cold Persists through Monday; Wintry Weather from the Northern Plains to the Great Lakes

Bitter cold temperatures and dangerous wind chills will persist from Florida to the Northeast through the day. Daily record low temperatures are forecast across the Southeast and Florida, with some all-time February low temperature records possible across Florida. An Alberta clipper will spread wintry precipitation across the Northern Plains today and into the upper Great Lakes into tonight. Read More >

Current conditions at

San Marcos, San Marcos Municipal Airport (KHYI)

Lat: 29.89°NLon: 97.86°WElev: 597ft.

Overcast

59°F

15°C

Humidity 69%
Wind Speed SW 14 mph
Barometer 30.34 in (1027.4 mb)
Dewpoint 49°F (9°C)
Visibility 10.00 mi
Last update 2 Feb 10:56 am CST
Extended Forecast for

3 Miles NNW San Marcos Municipal Airport TX

  • Today

    Today: Partly sunny, with a high near 68. South southwest wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 68 °F

    Partly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 56. South wind around 10 mph, with gusts as high as 20 mph.

    Low: 56 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 71. South southwest wind around 10 mph becoming north in the afternoon.

    High: 71 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 43. North wind 5 to 10 mph.

    Low: 43 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 64. North northeast wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 64 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 37. North wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 37 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 66. North northwest wind around 5 mph becoming west southwest in the afternoon.

    High: 66 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 40. Calm wind becoming west southwest around 5 mph after midnight.

    Low: 40 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 73. West southwest wind 5 to 10 mph.

    High: 73 °F

    Sunny

Detailed Forecast

Today
Partly sunny, with a high near 68. South southwest wind 10 to 15 mph, with gusts as high as 25 mph.
Tonight
Mostly cloudy, with a low around 56. South wind around 10 mph, with gusts as high as 20 mph.
Tuesday
Partly sunny, with a high near 71. South southwest wind around 10 mph becoming north in the afternoon.
Tuesday Night
Partly cloudy, with a low around 43. North wind 5 to 10 mph.
Wednesday
Sunny, with a high near 64. North northeast wind 10 to 15 mph, with gusts as high as 25 mph.
Wednesday Night
Mostly clear, with a low around 37. North wind 5 to 10 mph, with gusts as high as 20 mph.
Thursday
Sunny, with a high near 66. North northwest wind around 5 mph becoming west southwest in the afternoon.
Thursday Night
Clear, with a low around 40. Calm wind becoming west southwest around 5 mph after midnight.
Friday
Sunny, with a high near 73. West southwest wind 5 to 10 mph.
Friday Night
Mostly clear, with a low around 43.
Saturday
Sunny, with a high near 75.
Saturday Night
Mostly clear, with a low around 48.
Sunday
Mostly sunny, with a high near 76.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NNW San Marcos Municipal Airport TX
 29.95°N 97.89°W (Elev. 646 ft)
Last Update:
10:32 am CST Feb 2, 2026
Forecast Valid:
11am CST Feb 2, 2026-6pm CST Feb 8, 2026
 
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