Heavy Rainfall and Flooding in the Mid-Atlantic; Heat and Wildfire Concerns in the West

Slow moving showers and thunderstorms may result in flash flooding for portions of the mid-Atlantic region through tonight. Meanwhile, excessive heat will continue to build across the West through Tuesday. Heat Advisories and Extreme Heat Warnings are in effect. Fire Weather concerns continue for the West with dry and breezy conditions. Watching the tropics across the Southeast. Read More >

Current conditions at

San Marcos, San Marcos Municipal Airport (KHYI)

Lat: 29.89°NLon: 97.86°WElev: 597ft.

Overcast

78°F

26°C

Humidity	100%
Wind Speed	S 5 mph
Barometer	30.05 in (1016.6 mb)
Dewpoint	78°F (26°C)
Visibility	10.00 mi
Heat Index	81°F (27°C)
Last update	15 Jul 5:56 am CDT

More Information:

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

Extended Forecast for

San Marcos Municipal Airport TX

Today
High: 94 °F
Decreasing
Clouds
Tonight
Low: 75 °F
Partly Cloudy
Wednesday
High: 96 °F
Decreasing
Clouds
Wednesday Night
Low: 72 °F
Partly Cloudy
Thursday
High: 95 °F
Mostly Sunny
Thursday Night
Low: 73 °F
Partly Cloudy
Friday
High: 93 °F
Mostly Sunny
Friday Night
Low: 74 °F
Partly Cloudy
Saturday
High: 96 °F
Mostly Sunny

Detailed Forecast

Today

Mostly cloudy, then gradually becoming sunny, with a high near 94. Heat index values as high as 102. South wind 5 to 10 mph, with gusts as high as 20 mph.

Tonight

Partly cloudy, with a low around 75. South wind 5 to 10 mph, with gusts as high as 20 mph.

Wednesday

Mostly cloudy, then gradually becoming sunny, with a high near 96. Heat index values as high as 104. South wind 5 to 10 mph, with gusts as high as 20 mph.

Wednesday Night

Partly cloudy, with a low around 72. South southeast wind 5 to 10 mph, with gusts as high as 20 mph.

Thursday

Mostly sunny, with a high near 95. South wind 5 to 10 mph.

Thursday Night

Partly cloudy, with a low around 73. Southeast wind around 5 mph.

Friday

Mostly sunny, with a high near 93. Calm wind becoming south around 5 mph in the morning.

Friday Night

Partly cloudy, with a low around 74. Southeast wind around 5 mph.

Saturday

Mostly sunny, with a high near 96. South southwest wind 5 to 10 mph.