Two Storms Tracking through the Southwest and Southcentral U.S.

A storm over the southwest U.S. will shift east through Thursday while another Pacific storm pivots over the region Friday through the weekend. Widespread low elevation rain and high elevation snow showers are expected with each storm. Both storms will shift over the central U.S. with the first occurring tonight through Thursday and the second Saturday night into Monday. Flood Watches issued. Read More >

Hazardous Weather Conditions

Flood Watch in effect from November 20, 12:00 AM CST until November 21, 06:00 AM CST

Current conditions at

San Marcos, San Marcos Municipal Airport (KHYI)

Lat: 29.89°NLon: 97.86°WElev: 597ft.

Overcast

79°F

26°C

Humidity	79%
Wind Speed	S 8 mph
Barometer	30.13 in (1019.6 mb)
Dewpoint	72°F (22°C)
Visibility	10.00 mi
Heat Index	82°F (28°C)
Last update	19 Nov 10:56 am CST

More Information:

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

Extended Forecast for

San Marcos TX

Flood Watch November 20, 12:00am until November 21, 06:00am

Click here for hazard details and duration

Flood Watch

Today
High: 85 °F
Chance
Showers
Tonight
Low: 68 °F
Slight Chance
T-storms then
Chance
Showers
Thursday
High: 82 °F
Showers
Likely
Thursday Night
Low: 66 °F
Showers
Likely
Friday
High: 81 °F
Chance
Showers then
Slight Chance
Showers
Friday Night
Low: 60 °F
Slight Chance
Showers then
Partly Cloudy
Saturday
High: 79 °F
Chance
Showers
Saturday Night
Low: 61 °F
Chance
Showers then
Chance
T-storms
Sunday
High: 78 °F
Showers
Likely

Detailed Forecast

Today

A chance of drizzle and thunderstorms before noon, then a chance of showers and thunderstorms, mainly between noon and 3pm. Mostly cloudy, with a high near 85. South southeast wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.

Tonight

A chance of showers and thunderstorms. Increasing clouds, with a low around 68. South wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 40%.

Thursday

Showers likely, with thunderstorms also possible after noon. Mostly cloudy, with a high near 82. South southeast wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 70%. New rainfall amounts between a half and three quarters of an inch possible.

Thursday Night

Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 66. Southeast wind 5 to 10 mph becoming south southwest after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 70%.

Friday

A chance of showers and thunderstorms. Partly sunny, with a high near 81. Southwest wind around 5 mph becoming north in the afternoon. Chance of precipitation is 50%.

Friday Night

A 20 percent chance of showers before midnight. Partly cloudy, with a low around 60. Calm wind becoming north around 5 mph after midnight.

Saturday

A 30 percent chance of showers, mainly after noon. Mostly sunny, with a high near 79. East northeast wind 5 to 10 mph.

Saturday Night

A chance of showers, with thunderstorms also possible after midnight. Mostly cloudy, with a low around 61. East northeast wind around 5 mph. Chance of precipitation is 50%.

Sunday

Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 78. East wind 5 to 10 mph becoming south southeast in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 60%.

Sunday Night

A chance of showers, then showers likely and possibly a thunderstorm after midnight. Mostly cloudy, with a low around 62. Chance of precipitation is 60%.

Monday

Showers likely. Partly sunny, with a high near 75. Chance of precipitation is 60%.

Monday Night

A 30 percent chance of showers. Partly cloudy, with a low around 52.

Tuesday

A 20 percent chance of showers. Sunny, with a high near 73.