Snow Squalls May Impact the Northeast on Thursday; Dangerously Cold Arctic Air Impact the North-Central US

Snow showers and snow squalls are likely to develop across the Northeast on Thursday. Lake effect snow will persist downwind of the Great Lakes. An arctic blast will bring frigid temperatures, gusty winds and dangerous wind chills to the Northern Plains before expanding to the South and East. A major winter storm will begin impacting the Southern Plains and Lower Mississippi Valley Friday. Read More >

Hazardous Weather Conditions

Current conditions at

San Marcos, San Marcos Municipal Airport (KHYI)

Lat: 29.89°NLon: 97.86°WElev: 597ft.

Fair

53°F

12°C

Humidity	89%
Wind Speed	NW 7 mph
Barometer	30.15 in (1020.7 mb)
Dewpoint	50°F (10°C)
Visibility	10.00 mi
Wind Chill	51°F (11°C)
Last update	21 Jan 10:56 pm CST

More Information:

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

Extended Forecast for

2 Miles W San Marcos Municipal Airport TX

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

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

Click here for hazard details and duration

Extreme Cold Watch

Winter Storm Watch

Tonight
Low: 51 °F
Mostly Cloudy
Thursday
High: 72 °F
Patchy Fog
then Mostly
Sunny
Thursday Night
Low: 55 °F
Increasing
Clouds
Friday
High: 69 °F
Chance
Showers
Friday Night
Low: 35 °F
Showers
Saturday
High: 47 °F
Showers
Saturday Night
Low: 21 °F
Wintry Mix
Sunday
High: 33 °F
Chance Wintry
Mix then
Mostly Sunny
Sunday Night
Low: 16 °F
Mostly Clear

Detailed Forecast

Tonight

Mostly clear early, then becoming mostly cloudy, with a low around 51. North northeast wind around 5 mph.

Thursday

Patchy fog before 10am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 72. North northeast wind around 5 mph becoming east southeast in the afternoon.

Thursday Night

Increasing clouds, with a low around 55. East wind around 5 mph becoming calm.

Friday

A 50 percent chance of showers. Cloudy, with a high near 69. East northeast wind 5 to 10 mph.

Friday Night

Showers and possibly a thunderstorm. Low around 35. East northeast wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 90%.

Saturday

Showers and possibly a thunderstorm. High near 47. North northeast wind 10 to 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. Low around 21. North wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 90%.

Sunday

A chance of freezing rain and 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 30%.

Sunday Night

Mostly clear, with a low around 16. North wind 5 to 15 mph, with gusts as high as 25 mph.

Monday

Sunny, with a high near 41.

Monday Night

Mostly clear, with a low around 20.

Tuesday

Mostly sunny, with a high near 52.

Tuesday Night

Partly cloudy, with a low around 35.

Wednesday

Mostly sunny, with a high near 59.