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

52°F

11°C

Humidity	97%
Wind Speed	NE 14 G 24 mph
Barometer	30.04 in (1016.8 mb)
Dewpoint	51°F (11°C)
Visibility	10.00 mi
Wind Chill	47°F (8°C)
Last update	23 Jan 10:56 pm CST

More Information:

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

Extended Forecast for

2 Miles WNW San Marcos Municipal Airport TX

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

Winter Storm Warning January 24, 03:00am until January 25, 12:00pm

Click here for hazard details and duration

Extreme Cold Warning

Winter Storm Warning

Tonight
Low: 37 °F
Showers
Saturday
High: 38 °F⇓
Showers then
Showers
Likely
Saturday Night
Low: 21 °F
Wintry Mix
Sunday
High: 34 °F
Slight Chance
Wintry Mix
then Mostly
Sunny
Sunday Night
Low: 16 °F
Mostly Clear
Monday
High: 36 °F
Sunny
Monday Night
Low: 13 °F
Mostly Clear
Tuesday
High: 47 °F
Mostly Sunny
Tuesday Night
Low: 27 °F
Partly Cloudy

Detailed Forecast

Tonight

Showers and possibly a thunderstorm. Low around 37. North wind 10 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

Showers and thunderstorms before noon, then showers likely and possibly a thunderstorm between noon and 3pm, then a chance of showers and thunderstorms after 3pm. Temperature falling to around 32 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 tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Saturday Night

Freezing rain, possibly mixed with sleet. Low around 21. 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 sleet between 9am and noon. Cloudy, then gradually becoming mostly 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 16. 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 13. 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 afternoon.

Tuesday Night

Partly cloudy, with a low around 27. South wind around 5 mph becoming calm.

Wednesday

Sunny, with a high near 54.