Areas of Severe Weather and Flash Flooding

The threat for severe weather and flash flooding continues in several spots across the country. An enhanced risk of severe storms is likely from KS to TX, w/ very large hail and damaging winds being the main concern, while a slight severe threat covers the Mid-Atlantic. Excessive rainfall w/ flooding remains possible from the southern Appalachians into the Mid-Atlantic and over the central Plains. Read More >

Hazardous Weather Conditions

Hazardous Weather Outlook

En Español

Current conditions at

San Marcos, San Marcos Municipal Airport (KHYI)

Lat: 29.89°NLon: 97.86°WElev: 597ft.

Fair

80°F

27°C

Humidity	82%
Wind Speed	S 8 mph
Barometer	29.92 in (1012.1 mb)
Dewpoint	74°F (23°C)
Visibility	10.00 mi
Heat Index	85°F (29°C)
Last update	18 Jun 11:56 pm CDT

More Information:

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

Extended Forecast for

2 Miles W San Marcos Municipal Airport TX

Overnight

Increasing
Clouds
Low: 75 °F
Wednesday

Hot
High: 99 °F
Wednesday
Night

Increasing
Clouds
Low: 77 °F
Thursday

Hot
High: 101 °F
Thursday
Night

Partly Cloudy
Low: 76 °F
Friday

Mostly Sunny
High: 98 °F
Friday
Night

Mostly Cloudy
Low: 77 °F
Saturday

Slight Chance
T-storms
High: 95 °F
Saturday
Night

Slight Chance
T-storms
Low: 76 °F

Detailed Forecast

Overnight

Increasing clouds, with a low around 75. South wind around 5 mph.

Wednesday

Mostly cloudy, then gradually becoming sunny and hot, with a high near 99. Heat index values as high as 110. South southwest wind 10 to 15 mph, with gusts as high as 20 mph.

Wednesday Night

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

Thursday

Mostly sunny and hot, with a high near 101. Heat index values as high as 110. South wind 10 to 15 mph, with gusts as high as 20 mph.

Thursday Night

Partly cloudy, with a low around 76. South southeast wind 10 to 15 mph, with gusts as high as 20 mph.

Friday

Mostly sunny, with a high near 98. South wind around 15 mph, with gusts as high as 25 mph.

Friday Night

Mostly cloudy, with a low around 77. South wind 10 to 15 mph, with gusts as high as 25 mph.

Saturday

A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 95. South wind 15 to 20 mph, with gusts as high as 25 mph.

Saturday Night

A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 76. South southeast wind 15 to 20 mph, with gusts as high as 25 mph.

Sunday

A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 95.

Sunday Night

A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 75.

Monday

A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 94.

Monday Night

A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 73.

Tuesday

A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 94.