Thunderstorms and Widespread Rainfall Across the Southern Plains

Isolated severe thunderstorms and widespread showers may produce flash flooding across the Southern Plains through Thursday. Numerous instances of flash flooding are expected in south-central Texas, including portions of the Hill Country; and an additional area across eastern Oklahoma into the Ozarks on Thursday. Heavy rainfall and mountain snow will return to southern California on Thursday. 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

75°F

24°C

Humidity	88%
Wind Speed	NA
Barometer	30.07 in (1017.5 mb)
Dewpoint	71°F (22°C)
Visibility	10.00 mi
Last update	19 Nov 11:56 pm CST

More Information:

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

Extended Forecast for

5 Miles SSE Driftwood TX

Flood Watch until November 21, 06:00am

Click here for hazard details and duration

Flood Watch

Flood Watch until November 21, 06:00am
NOW until 6:00am Fri
Flood Watch
Overnight
Low: 67 °F
Chance
Showers
Thursday
High: 81 °F
Showers
Likely
Thursday Night
Low: 65 °F
Showers
Likely
Friday
High: 80 °F
Showers
Likely then
Mostly Sunny
Friday Night
Low: 61 °F
Slight Chance
T-storms then
Chance
Showers
Saturday
High: 77 °F
Chance
Showers
Saturday Night
Low: 61 °F
Chance
Showers
Sunday
High: 77 °F
Showers
Likely

Detailed Forecast

Overnight

A 30 percent chance of showers, mainly before 3am. Cloudy, with a low around 67. South wind around 10 mph, with gusts as high as 20 mph.

Thursday

Showers likely, with thunderstorms also possible after 3pm. Mostly cloudy, with a high near 81. South southeast wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New rainfall amounts between a half and three quarters of an inch possible.

Thursday Night

Showers likely and possibly a thunderstorm before 9pm, then a chance of showers and thunderstorms between 9pm and 3am, then showers likely and possibly a thunderstorm after 3am. Increasing clouds, with a low around 65. South wind 5 to 10 mph becoming north in the evening. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

Friday

Showers likely and possibly a thunderstorm before 9am, then showers likely between 9am and noon. Cloudy, then gradually becoming mostly sunny, with a high near 80. Southwest wind around 5 mph becoming north northeast in the afternoon. Chance of precipitation is 60%.

Friday Night

A 30 percent chance of showers and thunderstorms, mainly after midnight. Partly cloudy, with a low around 61. Calm wind becoming north around 5 mph after midnight.

Saturday

A 40 percent chance of showers. Partly sunny, with a high near 77. East northeast wind 5 to 10 mph, with gusts as high as 20 mph.

Saturday Night

A chance of showers, with thunderstorms also possible after 9pm. Mostly cloudy, with a low around 61. East northeast wind around 5 mph. Chance of precipitation is 50%.

Sunday

Showers likely, with thunderstorms also possible after noon. Mostly cloudy, with a high near 77. South southeast wind around 10 mph, with gusts as high as 25 mph. Chance of precipitation is 60%.

Sunday Night

A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 61. South southeast wind around 10 mph, with gusts as high as 20 mph.

Monday

Showers likely and possibly a thunderstorm before noon, then a chance of showers. Partly sunny, with a high near 73. Chance of precipitation is 70%.

Monday Night

A 20 percent chance of showers. Mostly clear, with a low around 50.

Tuesday

Sunny, with a high near 75.

Tuesday Night

Mostly clear, with a low around 50.

Wednesday

Mostly sunny, with a high near 69.