Heavy Rainfall Across South Texas; Heat in the West

Excessive rainfall may produce locally considerable flash flooding over parts of South Texas, the western Gulf Coast, and Lower Mississippi River Valley through Thursday. Hot temperatures will persist over central and northern California and the Pacific Northwest through today. Read More >

Current conditions at

San Marcos, San Marcos Municipal Airport (KHYI)

Lat: 29.89°NLon: 97.86°WElev: 597ft.

Fair

74°F

23°C

Humidity	97%
Wind Speed	N 3 mph
Barometer	29.92 in (1012.4 mb)
Dewpoint	73°F (23°C)
Visibility	10.00 mi
Last update	16 Jun 1:56 am CDT

More Information:

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

Extended Forecast for

2 Miles WNW San Marcos Municipal Airport TX

Overnight
Low: 73 °F
Chance
T-storms
Tuesday
High: 86 °F
Chance
T-storms
Tuesday Night
Low: 73 °F
Increasing
Clouds
Wednesday
High: 91 °F
Decreasing
Clouds
Wednesday Night
Low: 76 °F
Mostly Clear
Thursday
High: 96 °F
Mostly Sunny
Thursday Night
Low: 79 °F
Slight Chance
T-storms
Juneteenth
High: 93 °F
Mostly Cloudy
then Chance
T-storms
Friday Night
Low: 77 °F
Chance
T-storms

Detailed Forecast

Overnight

A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 73. Calm wind.

Tuesday

A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 86. Calm wind becoming east northeast around 5 mph in the afternoon. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Tuesday Night

Increasing clouds, with a low around 73. East wind around 5 mph becoming calm in the evening.

Wednesday

Mostly cloudy, then gradually becoming sunny, with a high near 91. Heat index values as high as 103. Calm wind becoming southeast around 5 mph in the afternoon.

Wednesday Night

Mostly clear, with a low around 76. South southeast wind 5 to 10 mph.

Thursday

Mostly sunny, with a high near 96. South wind 5 to 10 mph, with gusts as high as 20 mph.

Thursday Night

A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 79. South southeast wind 5 to 10 mph, with gusts as high as 20 mph.

Juneteenth

A 30 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 93. East wind 5 to 10 mph.

Friday Night

A 40 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. Mostly cloudy, with a high near 91.

Saturday Night

A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 77.

Sunday

Partly sunny, with a high near 93.

Sunday Night

Partly cloudy, with a low around 77.