High Flood Risk For Saturated Tennessee Valley and South; Near-Blizzard Conditions Possible for the Plains and Upper Midwest This Weekend

A high risk for flash flooding near a stalled front will continue across the saturated Tennessee Valley and South today. Meanwhile, a storm system producing heavy mountain and rare low elevation snows will shift from the Southwest across the Plains this weekend, with near blizzard conditions. To the south, an outbreak of severe thunderstorms is expected for the Mississippi Valley on Saturday. Read More >

Hazardous Weather Conditions

Hazardous Weather Outlook

En Español

Current conditions at

San Marcos, San Marcos Municipal Airport (KHYI)

Lat: 29.89°NLon: 97.86°WElev: 597ft.

Overcast

58°F

14°C

Humidity	90%
Wind Speed	NE 7 mph
Barometer	29.91 in (1012.6 mb)
Dewpoint	55°F (13°C)
Visibility	8.00 mi
Last update	22 Feb 1:56 pm CST

More Information:

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

Extended Forecast for

3 Miles WNW San Marcos TX

This
Afternoon

Chance
Showers
High: 65 °F
Tonight

Chance
Showers and
Patchy Fog
Low: 55 °F
Saturday

Slight Chance
T-storms then
Sunny
High: 70 °F
Saturday
Night

Mostly Clear
Low: 41 °F
Sunday

Sunny
High: 65 °F
Sunday
Night

Mostly Clear
Low: 41 °F
Monday

Mostly Sunny
High: 66 °F
Monday
Night

Mostly Cloudy
Low: 52 °F
Tuesday

Slight Chance
Showers
High: 67 °F

Detailed Forecast

This Afternoon

A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 65. East southeast wind around 5 mph.

Tonight

A chance of showers, with thunderstorms also possible after midnight. Patchy fog after 9pm. Otherwise, mostly cloudy, with a low around 55. East southeast wind around 5 mph becoming southwest after midnight. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Saturday

A 20 percent chance of showers and thunderstorms before 9am. Mostly cloudy, then gradually becoming sunny, with a high near 70. West wind 10 to 20 mph, with gusts as high as 25 mph.

Saturday Night

Mostly clear, with a low around 41. West wind around 10 mph becoming north after midnight.

Sunday

Sunny, with a high near 65. North wind 5 to 10 mph becoming east northeast in the afternoon.

Sunday Night

Mostly clear, with a low around 41. Northeast wind around 5 mph.

Monday

Mostly sunny, with a high near 66. Northeast wind 5 to 10 mph becoming southeast in the afternoon.

Monday Night

Mostly cloudy, with a low around 52. Southeast wind around 5 mph.

Tuesday

A 20 percent chance of showers. Mostly cloudy, with a high near 67. East southeast wind around 5 mph.