Heavy to Excessive Rainfall and Flooding Threats in the Central and Eastern U.S.; Heat and Fire Weather Concerns in the West

Thunderstorms producing excessive rainfall and potential flooding concerns will continue through tonight from the Southern Plains to the East Coast. Areas of greatest concern for flooding are over central Texas and the Mid-Atlantic. Heat will continue to build across the West through Tuesday. Heat Advisories and Extreme Heat Warnings are in effect. Fire Weather concerns continue through Monday. Read More >

Current conditions at

San Marcos, San Marcos Municipal Airport (KHYI)

Lat: 29.89°NLon: 97.86°WElev: 597ft.

Overcast

76°F

24°C

Humidity	100%
Wind Speed	S 8 mph
Barometer	30.04 in (1016.7 mb)
Dewpoint	76°F (24°C)
Visibility	9.00 mi
Heat Index	75°F (24°C)
Last update	14 Jul 4:56 am CDT

More Information:

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

Extended Forecast for

San Marcos TX

Today
High: 92 °F
Slight Chance
Showers then
Slight Chance
T-storms
Tonight
Low: 74 °F
Mostly Cloudy
Tuesday
High: 93 °F
Decreasing
Clouds
Tuesday Night
Low: 74 °F
Partly Cloudy
Wednesday
High: 93 °F
Mostly Sunny
Wednesday Night
Low: 72 °F
Mostly Clear
Thursday
High: 93 °F
Mostly Sunny
Thursday Night
Low: 73 °F
Partly Cloudy
Friday
High: 93 °F
Mostly Sunny

Detailed Forecast

Today

A slight chance of showers before 10am, then a slight chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 92. Heat index values as high as 100. South wind 5 to 10 mph. Chance of precipitation is 20%.

Tonight

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

Tuesday

Cloudy, then gradually becoming mostly sunny, with a high near 93. Heat index values as high as 102. South southeast wind 5 to 10 mph, with gusts as high as 20 mph.

Tuesday Night

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

Wednesday

Mostly sunny, with a high near 93. South wind 5 to 10 mph, with gusts as high as 20 mph.

Wednesday Night

Mostly clear, 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 93. South wind around 5 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.