Widespread Showers and Thunderstorms in Southern California and the Southern Plains into the Mississippi Valley

Isolated strong to severe thunderstorms and widespread heavy rainfall are possible across the southern Plains into Arkansas. Widespread showers with a slight chance of thunderstorms are possible across southern California. Urban flooding, rock and mudslides as well as minor debris flows near burn scars are possible. Read More >

Current conditions at

San Marcos, San Marcos Municipal Airport (KHYI)

Lat: 29.89°NLon: 97.86°WElev: 597ft.

Thunderstorm Light Rain

67°F

19°C

Humidity	97%
Wind Speed	Calm
Barometer	29.96 in (1013.9 mb)
Dewpoint	66°F (19°C)
Visibility	9.00 mi
Last update	20 Nov 9:56 pm CST

More Information:

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

Extended Forecast for

3 Miles WSW San Marcos TX

Tonight
Low: 67 °F
Chance
T-storms
Friday
High: 80 °F
Showers
Likely then
Chance
T-storms
Friday Night
Low: 61 °F
Mostly Cloudy
Saturday
High: 76 °F
Mostly Sunny
Saturday Night
Low: 60 °F
Slight Chance
Showers
Sunday
High: 76 °F
Chance
Showers
Sunday Night
Low: 66 °F
Slight Chance
Showers then
Chance
T-storms
Monday
High: 77 °F
Showers
Monday Night
Low: 53 °F
Mostly Clear

Detailed Forecast

Tonight

A 40 percent chance of showers and thunderstorms, mainly after 3am. Cloudy, with a low around 67. East wind around 5 mph becoming south after midnight.

Friday

Showers likely and possibly a thunderstorm before 9am, then a chance of showers and thunderstorms between 9am and 3pm. Cloudy, then gradually becoming mostly sunny, with a high near 80. South southwest wind around 5 mph becoming north in the afternoon. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

Friday Night

Mostly cloudy, with a low around 61. Calm wind becoming north around 5 mph after midnight.

Saturday

Mostly sunny, with a high near 76. Northeast wind 5 to 10 mph, with gusts as high as 20 mph.

Saturday Night

A 20 percent chance of showers. Mostly cloudy, with a low around 60. Northeast wind around 5 mph.

Sunday

A 30 percent chance of showers. Mostly cloudy, with a high near 76. Northeast wind 5 to 10 mph becoming southeast in the afternoon. Winds could gust as high as 20 mph.

Sunday Night

A slight chance of showers, then a chance of showers and thunderstorms after midnight. Mostly cloudy, with a low around 66. South southeast wind around 10 mph. Chance of precipitation is 30%.

Monday

Showers and possibly a thunderstorm. High near 77. South wind 5 to 10 mph becoming west northwest in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 80%.

Monday Night

Mostly clear, with a low around 53. West northwest wind around 5 mph becoming calm.

Tuesday

Sunny, with a high near 80.

Tuesday Night

Partly cloudy, with a low around 51.

Wednesday

Mostly sunny, with a high near 66.

Wednesday Night

Mostly clear, with a low around 40.

Thanksgiving Day

Sunny, with a high near 63.