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 5 mph
Barometer	30.04 in (1016.8 mb)
Dewpoint	59°F (15°C)
Visibility	10.00 mi
Last update	23 Jan 1:56 am CST

More Information:

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

Extended Forecast for

5 Miles SW San Marcos TX

Dense Fog Advisory until January 23, 10:00am

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

Dense Fog Advisory

Extreme Cold Warning

Winter Storm Warning

Dense Fog Advisory until January 23, 10:00am
NOW until 10:00am Fri
Dense Fog Advisory
Overnight
Low: 58 °F
Patchy
Drizzle and
Patchy Dense
Fog
Friday
High: 72 °F
Areas Showers
and Dense Fog
Friday Night
Low: 43 °F
Showers and
Patchy Fog
Saturday
High: 44 °F
Showers then
Chance
Showers
Saturday Night
Low: 22 °F
Wintry Mix
Sunday
High: 33 °F
Slight Chance
Sleet then
Mostly Sunny
Sunday Night
Low: 14 °F
Mostly Clear
Monday
High: 38 °F
Sunny

Detailed Forecast

Overnight

Patchy drizzle. Patchy dense fog. Otherwise, cloudy, with a low around 58. East southeast wind around 5 mph.

Friday

A chance of showers, with thunderstorms also possible after 3pm. Widespread dense fog, mainly before 10am. Otherwise, cloudy, with a high near 72. East southeast wind 5 to 10 mph. Chance of precipitation is 40%.

Friday Night

Showers and possibly a thunderstorm. Patchy fog between 9pm and 11pm. Low around 43. East wind 10 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 44. North wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 90%.

Saturday Night

Rain or freezing rain before 9pm, then freezing rain between 9pm and 3am, then freezing rain and sleet after 3am. Some thunder is also possible. Low around 22. North wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 80%.

Sunday

A slight chance of sleet before noon. Mostly sunny, with a high near 33. 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 38. North wind 5 to 10 mph.

Monday Night

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

Tuesday

Mostly sunny, with a high near 50.

Tuesday Night

Mostly cloudy, with a low around 34.

Wednesday

Mostly sunny, with a high near 54.