Major Winter Storm to Bring Heavy Snow and Ice Impacts; Dangerously Cold in the North-Central U.S.

A large, long-duration winter storm is expected to bring widespread heavy snow, sleet, and freezing rain from the Southern Rockies/Plains into the Mid-South beginning Friday, spreading eastward to the Mid-Atlantic and New England this weekend. An Arctic front will bring frigid temperatures and gusty winds that will lead to dangerous wind chills from the Northern Plains and Upper Midwest. Read More >

Hazardous Weather Conditions

Current conditions at

San Marcos, San Marcos Municipal Airport (KHYI)

Lat: 29.89°NLon: 97.86°WElev: 597ft.

Partly Cloudy

70°F

21°C

Humidity	61%
Wind Speed	S 12 mph
Barometer	30.02 in (1016.1 mb)
Dewpoint	56°F (13°C)
Visibility	10.00 mi
Last update	22 Jan 3:56 pm CST

More Information:

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

Extended Forecast for

2 Miles WSW San Marcos TX

Extreme Cold Watch January 24, 06:00pm until January 26, 12:00pm

Winter Storm Warning January 24, 06:00am until January 25, 12:00pm

Click here for hazard details and duration

Extreme Cold Watch

Winter Storm Warning

Tonight
Low: 57 °F
Mostly Cloudy
then Patchy
Fog
Friday
High: 68 °F
Chance
Showers and
Patchy Fog
Friday Night
Low: 41 °F
Showers
Saturday
High: 42 °F
Showers
Saturday Night
Low: 22 °F
Wintry Mix
Sunday
High: 33 °F
Chance Wintry
Mix then
Mostly Sunny
Sunday Night
Low: 15 °F
Mostly Clear
Monday
High: 40 °F
Sunny
Monday Night
Low: 19 °F
Mostly Clear

Detailed Forecast

Tonight

Patchy fog after 3am. Otherwise, mostly cloudy, with a low around 57. East wind around 5 mph.

Friday

A chance of showers before noon, then a chance of showers after 3pm. Patchy fog before 10am. Otherwise, cloudy, with a high near 68. East wind 5 to 10 mph. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.

Friday Night

Showers and possibly a thunderstorm before midnight, then showers between midnight and 3am, then showers and possibly a thunderstorm after 3am. Low around 41. North northeast wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

Saturday

Showers and possibly a thunderstorm. High near 42. North wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 90%.

Saturday Night

Rain or freezing rain before midnight, then freezing rain between midnight and 3am, then freezing rain and sleet after 3am. Some thunder is also possible. Low around 22. North wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 90%.

Sunday

A chance of freezing rain and sleet before noon. Mostly sunny, with a high near 33. North wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 30%.

Sunday Night

Mostly clear, with a low around 15. North wind 10 to 15 mph, with gusts as high as 30 mph.

Monday

Sunny, with a high near 40. North wind 5 to 10 mph becoming east northeast in the afternoon.

Monday Night

Mostly clear, with a low around 19. East wind around 5 mph becoming calm in the evening.

Tuesday

Mostly sunny, with a high near 52.

Tuesday Night

Mostly cloudy, with a low around 35.

Wednesday

Mostly sunny, with a high near 59.