Atmospheric River Bringing Heavy Rain to Southern California and Heavy Snow to the Sierra Nevadas

A strong atmospheric river will continue heavy rain over southern California through Friday. The heaviest rainfall is ongoing today in the Los Angeles Basin. Flash and urban flooding is possible. A prolonged heavy snowfall has begun over the Sierra Nevada Mountains and will continue through Friday. Travel will become increasingly difficult over the passes due to snow and strong winds. Read More >

Current conditions at

San Marcos, San Marcos Municipal Airport (KHYI)

Lat: 29.89°NLon: 97.86°WElev: 597ft.

Fair

66°F

19°C

Humidity	68%
Wind Speed	Calm
Barometer	30.23 in (1023.1 mb)
Dewpoint	55°F (13°C)
Visibility	10.00 mi
Last update	24 Dec 6:56 pm CST

More Information:

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

Extended Forecast for

5 Miles SW San Marcos TX

Tonight
Low: 62 °F
Mostly Clear
then Patchy
Fog
Christmas Day
High: 79 °F
Areas Fog
then Partly
Sunny
Thursday Night
Low: 63 °F
Increasing
Clouds
Friday
High: 81 °F
Gradual
Clearing
Friday Night
Low: 64 °F
Partly Cloudy
Saturday
High: 81 °F
Partly Sunny
Saturday Night
Low: 64 °F
Mostly Cloudy
Sunday
High: 78 °F
Mostly Cloudy
Sunday Night
Low: 43 °F
Slight Chance
Showers

Detailed Forecast

Tonight

Patchy fog after 2am. Otherwise, increasing clouds, with a low around 62. South southwest wind around 5 mph.

Christmas Day

Areas of fog before 9am. Otherwise, cloudy through mid morning, then gradual clearing, with a high near 79. South southwest wind 5 to 10 mph.

Thursday Night

Increasing clouds, with a low around 63. South southwest wind around 5 mph.

Friday

Cloudy through mid morning, then gradual clearing, with a high near 81. South southwest wind 5 to 10 mph.

Friday Night

Partly cloudy, with a low around 64. South wind around 5 mph.

Saturday

Partly sunny, with a high near 81. South wind 5 to 10 mph, with gusts as high as 20 mph.

Saturday Night

Mostly cloudy, with a low around 64. South southeast wind around 10 mph.

Sunday

Mostly cloudy, with a high near 78. South wind 5 to 10 mph becoming west northwest in the afternoon.

Sunday Night

A 20 percent chance of showers. Mostly cloudy, with a low around 43. North wind 5 to 10 mph increasing to 15 to 20 mph after midnight. Winds could gust as high as 30 mph.

Monday

Mostly cloudy, with a high near 51.

Monday Night

Mostly cloudy, with a low around 36.

Tuesday

Partly sunny, with a high near 54.

Tuesday Night

Mostly cloudy, with a low around 34.

Wednesday

Mostly sunny, with a high near 62.