Excessive Rainfall in the Southern Plains into the Lower Mississippi and Upper Midwest

Heavy thunderstorms will continue to produce areas of excessive rainfall and locally considerable flooding over parts of the southern Plains into the mid-Mississippi River Valley through Saturday. Heavy to excessive rainfall may bring flash and urban flooding, along with isolated riverine flooding across portions of the Upper Midwest, mainly over central Minnesota. Read More >

Hazardous Weather Conditions

Flood Watch until June 12, 07:00 PM CDT

Current conditions at

San Marcos, San Marcos Municipal Airport (KHYI)

Lat: 29.89°NLon: 97.86°WElev: 597ft.

A Few Clouds

71°F

22°C

Humidity	100%
Wind Speed	SE 6 mph
Barometer	29.95 in (1013.5 mb)
Dewpoint	71°F (22°C)
Visibility	10.00 mi
Last update	12 Jun 10:56 am CDT

More Information:

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

Extended Forecast for

4 Miles SSW San Marcos TX

Flood Watch June 12, 11:22am until June 12, 07:00pm

Click here for hazard details and duration

Flood Watch

Flood Watch June 12, 11:22am until June 12, 07:00pm
NOW until 7:00pm Thu
Flood Watch
Today
High: 86 °F
Chance
T-storms
Tonight
Low: 73 °F
Slight Chance
T-storms then
Mostly Cloudy
Friday
High: 92 °F
Slight Chance
T-storms
Friday Night
Low: 75 °F
Increasing
Clouds
Saturday
High: 93 °F
Partly Sunny
then Slight
Chance
T-storms
Saturday Night
Low: 75 °F
Partly Cloudy
Sunday
High: 94 °F
Partly Sunny
then Slight
Chance
T-storms
Sunday Night
Low: 74 °F
Partly Cloudy

Detailed Forecast

Today

A 40 percent chance of showers and thunderstorms, mainly before 4pm. Partly sunny, with a high near 86. South wind 5 to 10 mph.

Tonight

A 10 percent chance of showers and thunderstorms before 7pm. Increasing clouds, with a low around 73. South wind around 5 mph.

Friday

A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 92. Heat index values as high as 106. South wind 5 to 10 mph, with gusts as high as 20 mph.

Friday Night

Increasing clouds, with a low around 75. South southeast wind 5 to 10 mph.

Saturday

A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 93. South wind 5 to 10 mph.

Saturday Night

Partly cloudy, with a low around 75. South southeast wind 5 to 10 mph.

Sunday

A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 94. South wind 5 to 10 mph.

Sunday Night

Partly cloudy, with a low around 74. South southeast wind 5 to 10 mph.

Monday

Mostly sunny, with a high near 94. South wind 5 to 10 mph.