Significant Winter Storm to Bring Heavy Snow and Ice Impacts; Dangerously Cold Temperatures Expands Across the East

A significant, long-duration winter storm will bring widespread heavy snow, sleet, and freezing rain from the Southern Rockies to New England through Monday. Widespread travel disruptions, prolonged power outages, and vast tree damage is likely. Frigid temperatures, gusty winds, and dangerous wind chills will expand from the north-central US to the Southern Plains, MS Valley, and Midwest. Read More >

Hazardous Weather Conditions

Current conditions at

San Marcos, San Marcos Municipal Airport (KHYI)

Lat: 29.89°NLon: 97.86°WElev: 597ft.

Overcast

60°F

16°C

Humidity	96%
Wind Speed	E 3 mph
Barometer	30.05 in (1017.3 mb)
Dewpoint	59°F (15°C)
Visibility	10.00 mi
Last update	23 Jan 12:56 am CST

More Information:

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

Extended Forecast for

San Marcos TX

Extreme Cold Warning 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 Warning

Winter Storm Warning

Overnight
Low: 58 °F
Slight Chance
Showers and
Patchy Fog
Friday
High: 70 °F
Chance
Showers and
Patchy Fog
Friday Night
Low: 42 °F
Showers
Saturday
High: 43 °F
Showers then
Chance
Showers
Saturday Night
Low: 22 °F
Wintry Mix
Sunday
High: 32 °F
Slight Chance
Wintry Mix
then Mostly
Sunny
Sunday Night
Low: 14 °F
Mostly Clear
Monday
High: 37 °F
Sunny
Monday Night
Low: 18 °F
Clear

Detailed Forecast

Overnight

A 20 percent chance of showers after 3am. Patchy fog after 3am. Otherwise, cloudy, with a low around 58. Southeast wind around 5 mph.

Friday

A chance of showers, with thunderstorms also possible after 3pm. Patchy fog before 10am. Otherwise, cloudy, with a high near 70. Light east southeast wind becoming east 5 to 10 mph in the morning. Chance of precipitation is 40%.

Friday Night

Showers and possibly a thunderstorm. Low around 42. East wind 5 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.

Saturday

Showers and possibly a thunderstorm before noon, then a chance of showers and thunderstorms between noon and 3pm, then a chance of showers after 3pm. High near 43. North wind around 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 80%.

Sunday

A slight chance of freezing rain and sleet before 9am, then a slight chance of sleet between 9am and noon. Mostly sunny, with a high near 32. North wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 20%.

Sunday Night

Mostly clear, with a low around 14. North wind 10 to 15 mph, with gusts as high as 25 mph.

Monday

Sunny, with a high near 37. North wind around 5 mph.

Monday Night

Clear, with a low around 18. East northeast wind around 5 mph becoming calm.

Tuesday

Mostly sunny, with a high near 50.

Tuesday Night

Mostly cloudy, with a low around 34.

Wednesday

Mostly sunny, with a high near 53.