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

Heavy lake effect snow will continue in the Great Lakes into Wednesday before another storm brings a widespread general snow followed by another round of heavy lake effect snow. A wide-ranging winter storm will produce great swaths of heavy snow, sleet, and treacherous freezing rain from the southern Rockies/Plains and Mid-South starting Friday and shifting toward the East Coast through Sunday. Read More >

Current conditions at

San Marcos, San Marcos Municipal Airport (KHYI)

Lat: 29.89°NLon: 97.86°WElev: 597ft.

Overcast

59°F

15°C

Humidity	46%
Wind Speed	E 5 mph
Barometer	30.27 in (1024.8 mb)
Dewpoint	38°F (3°C)
Visibility	10.00 mi
Last update	20 Jan 3:56 pm CST

More Information:

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

Extended Forecast for

San Marcos TX

Tonight
Low: 51 °F
Cloudy then
Chance
Showers and
Patchy Fog
Wednesday
High: 70 °F
Slight Chance
Showers
Wednesday Night
Low: 51 °F
Partly Cloudy
Thursday
High: 74 °F
Mostly Cloudy
Thursday Night
Low: 57 °F
Mostly Cloudy
Friday
High: 64 °F
Chance
Showers
Friday Night
Low: 31 °F
Showers
Saturday
High: 34 °F
Rain/Freezing
Rain then
Chance
Freezing Rain
Saturday Night
Low: 18 °F
Chance
Freezing Rain

Detailed Forecast

Tonight

A 40 percent chance of showers, mainly after 3am. Patchy fog between 3am and 5am. Otherwise, cloudy, with a low around 51. East southeast wind around 5 mph becoming south after midnight.

Wednesday

A 20 percent chance of showers before 3pm. Cloudy, then gradually becoming mostly sunny, with a high near 70. South southwest wind 5 to 10 mph.

Wednesday Night

Partly cloudy, with a low around 51. Calm wind.

Thursday

Mostly cloudy, with a high near 74. Calm wind becoming south southeast around 5 mph in the morning.

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 64. 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 31. North northeast wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 80%.

Saturday

Rain or freezing rain before noon, then a chance of freezing rain. High near 34. North wind around 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 18. North wind around 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 43.

Monday Night

Mostly clear, with a low around 21.

Tuesday

Sunny, with a high near 52.