Another Arctic Blast in the East; Eastern U.S. Winter Storm

A powerful Arctic blast will bring dangerously cold, record low temperatures to the upper Ohio Valley, Mid-Atlantic, Gulf Coast and Southeast U.S. this weekend. A rapidly deepening storm will produce widespread heavy snow and wind from the southern Appalachians across the Carolinas and southern Virginia into Sunday. Storm-force winds and coastal flooding will be possible along the East Coast. Read More >

Current conditions at

San Marcos, San Marcos Municipal Airport (KHYI)

Lat: 29.89°NLon: 97.86°WElev: 597ft.

Fair

25°F

-4°C

Humidity	66%
Wind Speed	N 6 mph
Barometer	30.53 in (1034.3 mb)
Dewpoint	15°F (-9°C)
Visibility	10.00 mi
Wind Chill	18°F (-8°C)
Last update	1 Feb 6:56 am CST

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

4 Miles NNW San Marcos Municipal Airport TX

Today
High: 59 °F
Sunny
Tonight
Low: 36 °F
Mostly Clear
Monday
High: 67 °F
Increasing
Clouds
Monday Night
Low: 56 °F
Mostly Cloudy
Tuesday
High: 72 °F
Mostly Cloudy
then Slight
Chance
Showers
Tuesday Night
Low: 44 °F
Partly Cloudy
Wednesday
High: 66 °F
Mostly Sunny
Wednesday Night
Low: 37 °F
Mostly Clear
Thursday
High: 66 °F
Sunny

Detailed Forecast

Today

Sunny, with a high near 59. Light and variable wind becoming southwest 5 to 10 mph in the afternoon.

Tonight

Mostly clear, with a low around 36. Southwest wind around 5 mph.

Monday

Increasing clouds, with a high near 67. South southwest wind 5 to 15 mph, with gusts as high as 25 mph.

Monday Night

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

Tuesday

A 20 percent chance of showers after noon. Mostly cloudy, with a high near 72. South southwest wind around 10 mph becoming north in the afternoon. Winds could gust as high as 20 mph.

Tuesday Night

Partly cloudy, with a low around 44. North wind around 10 mph.

Wednesday

Mostly sunny, with a high near 66. North northeast wind around 10 mph, with gusts as high as 20 mph.

Wednesday Night

Mostly clear, with a low around 37. North northeast wind 5 to 10 mph.

Thursday

Sunny, with a high near 66. Northwest wind around 5 mph becoming south southwest in the afternoon.

Thursday Night

Mostly clear, with a low around 41.

Friday

Sunny, with a high near 75.