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 and Breezy

41°F

5°C

Humidity	93%
Wind Speed	N 22 G 29 mph
Barometer	30.07 in (1017.8 mb)
Dewpoint	39°F (4°C)
Visibility	10.00 mi
Wind Chill	31°F (-1°C)
Last update	24 Jan 2:56 am CST

More Information:

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

Extended Forecast for

3 Miles WSW San Marcos TX

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

Winter Storm Warning until January 25, 12:00pm

Click here for hazard details and duration

Extreme Cold Warning

Winter Storm Warning

Winter Storm Warning until January 25, 12:00pm
NOW until 12:00pm Sun
Winter Storm Warning
Overnight
Low: 36 °F
Showers
Saturday
High: 37 °F⇓
Showers then
Rain/Freezing
Rain Likely
Saturday Night
Low: 22 °F
Wintry Mix
Sunday
High: 34 °F
Slight Chance
Wintry Mix
then Mostly
Sunny
Sunday Night
Low: 17 °F
Mostly Clear
Monday
High: 36 °F
Sunny
Monday Night
Low: 14 °F
Mostly Clear
Tuesday
High: 47 °F
Mostly Sunny

Detailed Forecast

Overnight

Showers and possibly a thunderstorm. Low around 36. North wind around 20 mph, with gusts as high as 30 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Saturday

Rain showers before 1pm, then freezing rain likely. Some thunder is also possible. Temperature falling to around 28 by 5pm. North wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 90%. New ice accumulation of less than a 0.1 of an inch possible.

Saturday Night

Freezing rain, possibly mixed with sleet. Low around 22. North wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 100%. New ice accumulation of 0.1 to 0.3 of an inch possible. New sleet accumulation of less than a half inch possible.

Sunday

A slight chance of freezing rain before 9am, then a slight chance of snow showers and sleet between 9am and noon. Partly sunny, with a high near 34. 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 17. North wind 10 to 15 mph, with gusts as high as 25 mph.

Monday

Sunny, with a high near 36. North wind 5 to 15 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 47. Calm wind becoming south around 5 mph in the morning.

Tuesday Night

Partly cloudy, with a low around 28. South wind around 5 mph becoming calm.

Wednesday

Sunny, with a high near 54.