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 >

Hazardous Weather Conditions

Cold Weather Advisory in effect from January 31, 03:00 AM CST until January 31, 10:00 AM CST

Current conditions at

San Marcos, San Marcos Municipal Airport (KHYI)

Lat: 29.89°NLon: 97.86°WElev: 597ft.

Fair

54°F

12°C

Humidity	37%
Wind Speed	N 13 mph
Barometer	30.34 in (1027.4 mb)
Dewpoint	28°F (-2°C)
Visibility	10.00 mi
Wind Chill	50°F (10°C)
Last update	30 Jan 2:56 pm 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

Cold Weather Advisory January 31, 03:00am until January 31, 10:00am

Click here for hazard details and duration

Cold Weather Advisory

This Afternoon
High: 55 °F
Mostly Cloudy
Tonight
Low: 29 °F
Mostly Clear
Saturday
High: 45 °F
Sunny
Saturday Night
Low: 22 °F
Clear
Sunday
High: 58 °F
Sunny
Sunday Night
Low: 36 °F
Partly Cloudy
Monday
High: 66 °F
Partly Sunny
Monday Night
Low: 54 °F
Mostly Cloudy
Tuesday
High: 72 °F
Mostly Cloudy

Detailed Forecast

This Afternoon

Mostly cloudy, with a high near 55. North wind 5 to 15 mph.

Tonight

Mostly clear, with a low around 29. Light north northwest wind becoming north northeast 5 to 10 mph after midnight. Winds could gust as high as 20 mph.

Saturday

Sunny, with a high near 45. North northeast wind 10 to 15 mph, with gusts as high as 25 mph.

Saturday Night

Clear, with a low around 22. Northeast wind around 5 mph becoming calm in the evening.

Sunday

Sunny, with a high near 58. Light and variable wind becoming south southwest 5 to 10 mph in the afternoon.

Sunday Night

Partly cloudy, with a low around 36. South southwest wind around 5 mph.

Monday

Partly sunny, with a high near 66. West southwest wind 5 to 10 mph becoming south in the afternoon. Winds could gust as high as 20 mph.

Monday Night

Mostly cloudy, with a low around 54. South wind around 10 mph.