Excessive Rainfall and Potential Tropical Cyclone in the South; Severe Thunderstorms in the Midwest

Excessive rainfall may produce locally considerable flash flooding over parts of the northwestern Gulf Coast, lower Mississippi River Valley, and Deep South through Thursday. Potential Tropical Cyclone One is forecast to become a tropical storm (Arthur) as it moves along or just off the northwestern Gulf coast through Wednesday. An outbreak of severe weather is forecast in the Midwest Wednesday. Read More >

Hazardous Weather Conditions

Extreme Heat Warning in effect from June 18, 12:00 PM CDT until June 18, 08:00 PM CDT

Current conditions at

San Antonio, San Antonio International Airport (KSAT)

Lat: 29.53°NLon: 98.46°WElev: 807ft.

Overcast

78°F

26°C

Humidity	79%
Wind Speed	NE 6 mph
Barometer	29.76 in (1005.8 mb)
Dewpoint	71°F (22°C)
Visibility	10.00 mi
Heat Index	80°F (27°C)
Last update	17 Jun 9:51 am CDT

More Information:

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

Extended Forecast for

Castle Hills TX

Extreme Heat Warning June 18, 12:00pm until June 18, 08:00pm

Click here for hazard details and duration

Extreme Heat Warning

Today
High: 93 °F
Sunny
Tonight
Low: 77 °F
Increasing
Clouds
Thursday
High: 98 °F
Decreasing
Clouds
Thursday Night
Low: 79 °F
Increasing
Clouds
Juneteenth
High: 94 °F
Mostly Cloudy
then Slight
Chance
T-storms
Friday Night
Low: 77 °F
Chance
T-storms
Saturday
High: 91 °F
Chance
T-storms
Saturday Night
Low: 76 °F
Chance
T-storms
Sunday
High: 94 °F
Partly Sunny

Detailed Forecast

Today

Sunny, with a high near 93. Heat index values as high as 105. Calm wind becoming south around 5 mph in the afternoon.

Tonight

Increasing clouds, with a low around 77. South wind 5 to 10 mph.

Thursday

Mostly cloudy, then gradually becoming sunny, with a high near 98. Heat index values as high as 113. South southeast wind 5 to 10 mph, with gusts as high as 20 mph.

Thursday Night

Increasing clouds, with a low around 79. Southeast wind around 10 mph, with gusts as high as 20 mph.

Juneteenth

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

Friday Night

A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 77. East southeast wind 5 to 10 mph.

Saturday

A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 91. South southeast wind 5 to 10 mph.

Saturday Night

A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 76. Southeast wind around 10 mph.

Sunday

Partly sunny, with a high near 94. South wind 10 to 15 mph, with gusts as high as 25 mph.