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.

Fog/Mist

67°F

19°C

Humidity	93%
Wind Speed	S 8 mph
Barometer	30.06 in (1017.4 mb)
Dewpoint	65°F (18°C)
Visibility	2.00 mi
Last update	23 Jan 12:56 pm 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

This Afternoon
High: 72 °F
Chance
Showers
Tonight
Low: 35 °F
Showers and
Patchy Fog
Saturday
High: 39 °F⇓
Showers then
Showers
Likely
Saturday Night
Low: 21 °F
Wintry Mix
Sunday
High: 33 °F
Slight Chance
Wintry Mix
then Mostly
Sunny
Sunday Night
Low: 15 °F
Mostly Clear
Monday
High: 34 °F
Sunny
Monday Night
Low: 14 °F
Mostly Clear
Tuesday
High: 45 °F
Mostly Sunny

Detailed Forecast

This Afternoon

A chance of showers, with thunderstorms also possible after 3pm. Cloudy, with a high near 72. East southeast wind around 10 mph. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Tonight

Showers and thunderstorms before midnight, then showers between midnight and 3am, then showers and possibly a thunderstorm after 3am. Patchy fog between 9pm and 11pm. Low around 35. East wind 10 to 15 mph becoming north after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.

Saturday

Showers and thunderstorms before noon, then showers likely and possibly a thunderstorm between noon and 3pm, then showers likely after 3pm. Temperature falling to around 33 by 3pm. North wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

Saturday Night

Rain or freezing rain before midnight, then freezing rain and sleet. Low around 21. North wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 100%.

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 33. North northwest wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 20%.

Sunday Night

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

Monday

Sunny, with a high near 34. North wind 5 to 10 mph, with gusts as high as 20 mph.

Monday Night

Mostly clear, with a low around 14. North wind around 5 mph becoming calm in the evening.

Tuesday

Mostly sunny, with a high near 45. Calm wind becoming south southwest around 5 mph in the afternoon.

Tuesday Night

Mostly cloudy, with a low around 27.

Wednesday

Mostly sunny, with a high near 52.