Heavy Great Lakes Snow through Friday; Extreme Cold and Potential for Major Winter Storm Late Week into this Weekend

Multiple clipper systems will bring cold temperatures and enhance lake-effect snow downwind of the Great Lakes. An arctic blast will bring frigid temperatures accompanied with gusty winds that may lead to dangerous wind chills beginning in the Northern Plains Thursday before expanding to the South and East. An expansive winter storm will start Friday in the Southern Rockies/Plains and Mid-South. Read More >

Current conditions at

San Marcos, San Marcos Municipal Airport (KHYI)

Lat: 29.89°NLon: 97.86°WElev: 597ft.

Overcast

58°F

14°C

Humidity	75%
Wind Speed	SE 12 mph
Barometer	30.23 in (1023.5 mb)
Dewpoint	50°F (10°C)
Visibility	10.00 mi
Last update	20 Jan 9:56 pm CST

More Information:

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

Extended Forecast for

3 Miles WNW San Marcos TX

Tonight
Low: 51 °F
Chance
Showers and
Patchy Fog
Wednesday
High: 69 °F
Slight Chance
Showers then
Partly Sunny
Wednesday Night
Low: 51 °F
Partly Cloudy
Thursday
High: 73 °F
Partly Sunny
Thursday Night
Low: 57 °F
Mostly Cloudy
Friday
High: 62 °F
Chance
Showers
Friday Night
Low: 32 °F
Showers
Saturday
High: 35 °F
Showers then
Chance
Rain/Freezing
Rain
Saturday Night
Low: 19 °F
Chance
Freezing Rain

Detailed Forecast

Tonight

A 30 percent chance of showers, mainly after 3am. Patchy fog after 3am. Otherwise, cloudy, with a low around 51. South southeast wind around 5 mph.

Wednesday

A 20 percent chance of showers before noon. Cloudy, then gradually becoming mostly sunny, with a high near 69. South southwest wind around 5 mph.

Wednesday Night

Partly cloudy, with a low around 51. Calm wind becoming north around 5 mph.

Thursday

Partly sunny, with a high near 73. North wind around 5 mph becoming south in the afternoon.

Thursday Night

Mostly cloudy, with a low around 57. South southeast wind around 5 mph.

Friday

A 50 percent chance of showers. Cloudy, with a high near 62. Southeast wind 5 to 10 mph becoming north northeast in the afternoon. Winds could gust as high as 20 mph.

Friday Night

Showers. Low around 32. North northeast wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 80%.

Saturday

Rain showers before noon, then a chance of rain or freezing rain. High near 35. North wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 80%.

Saturday Night

A chance of freezing rain. Mostly cloudy, with a low around 19. North wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 50%.

Sunday

A slight chance of freezing rain before noon. Partly sunny, with a high near 33. Chance of precipitation is 20%.

Sunday Night

Partly cloudy, with a low around 18.

Monday

Mostly sunny, with a high near 42.

Monday Night

Mostly clear, with a low around 22.

Tuesday

Sunny, with a high near 52.