Excessive Rainfall and Tropical Storm in the South; Severe Thunderstorms in the Midwest

Excessive rainfall may produce considerable, potentially life-threatening, flooding across the lower Mississippi River Valley and central Great Lakes region through tonight. Tropical Storm Arthur will move northeastward along the Texas coast today and then move inland over southwestern Louisiana by tonight. An outbreak of severe thunderstorms is expected across portions of Illinois and Indiana. 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, Stinson Municipal Airport (KSSF)

Lat: 29.34°NLon: 98.47°WElev: 574ft.

Fair

88°F

31°C

Humidity	61%
Wind Speed	Vrbl 3 mph
Barometer	29.68 in (1003.8 mb)
Dewpoint	73°F (23°C)
Visibility	10.00 mi
Heat Index	96°F (36°C)
Last update	17 Jun 12:53 pm CDT

More Information:

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

Extended Forecast for

2 Miles SE San Antonio TX

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

Click here for hazard details and duration

Extreme Heat Warning

This Afternoon
High: 93 °F
Sunny
Tonight
Low: 78 °F
Mostly Clear
Thursday
High: 98 °F
Decreasing
Clouds
Thursday Night
Low: 80 °F
Increasing
Clouds
Juneteenth
High: 94 °F
Mostly Cloudy
then Slight
Chance
T-storms
Friday Night
Low: 78 °F
Chance
T-storms
Saturday
High: 91 °F
Chance
T-storms
Saturday Night
Low: 77 °F
Chance
T-storms
Sunday
High: 94 °F
Mostly Sunny

Detailed Forecast

This Afternoon

Sunny, with a high near 93. Heat index values as high as 106. Calm wind becoming south around 5 mph.

Tonight

Mostly clear, with a low around 78. South wind 5 to 10 mph.

Thursday

Mostly cloudy, then gradually becoming sunny, with a high near 98. Heat index values as high as 116. South southeast wind 5 to 10 mph, with gusts as high as 20 mph.

Thursday Night

Increasing clouds, with a low around 80. 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 78. East southeast wind 5 to 10 mph.

Saturday

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

Saturday Night

A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 77. Southeast wind around 10 mph.

Sunday

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