Areas of Severe Thunderstorms and Excessive Rainfall through This Weekend

A multi-day thunderstorm and heavy rain event will impact the south-central U.S. this Memorial Day weekend. Severe thunderstorms may produce large hail, severe gusts, and a possible tornado or two across portions of the central and southern Plains through Monday. The threat for heavy to excessive rainfall and possible flash flooding will return to the south-central U.S., especially in the Ozarks. Read More >

Current conditions at

San Marcos, San Marcos Municipal Airport (KHYI)

Lat: 29.89°NLon: 97.86°WElev: 597ft.

Mostly Cloudy

92°F

33°C

Humidity	52%
Wind Speed	S 16 mph
Barometer	29.95 in (1013.2 mb)
Dewpoint	72°F (22°C)
Visibility	10.00 mi
Heat Index	100°F (38°C)
Last update	24 May 12:56 pm CDT

More Information:

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

Extended Forecast for

San Marcos Municipal Airport TX

This Afternoon
High: 98 °F
Sunny
Tonight
Low: 76 °F
Increasing
Clouds
Sunday
High: 97 °F
Decreasing
Clouds
Sunday Night
Low: 77 °F
Increasing
Clouds
Memorial Day
High: 96 °F
Isolated
T-storms then
Scattered
T-storms
Monday Night
Low: 71 °F
Scattered
T-storms
Tuesday
High: 93 °F
Scattered
Showers then
Scattered
T-storms
Tuesday Night
Low: 70 °F
Scattered
T-storms
Wednesday
High: 88 °F
Scattered
T-storms then
Showers
Likely

Detailed Forecast

This Afternoon

Sunny, with a high near 98. Heat index values as high as 105. South wind around 15 mph, with gusts as high as 20 mph.

Tonight

Increasing clouds, with a low around 76. South wind 10 to 15 mph, with gusts as high as 25 mph.

Sunday

Cloudy, then gradually becoming mostly sunny, with a high near 97. Heat index values as high as 104. South wind 10 to 15 mph, with gusts as high as 25 mph.

Sunday Night

Increasing clouds, with a low around 77. South southeast wind 10 to 15 mph, with gusts as high as 25 mph.

Memorial Day

Scattered showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 96. South wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 50%.

Monday Night

Scattered showers and thunderstorms. Mostly cloudy, with a low around 71. South southeast wind 5 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 50%.

Tuesday

Scattered showers and thunderstorms. Partly sunny, with a high near 93. Southeast wind 5 to 10 mph. Chance of precipitation is 40%.

Tuesday Night

Scattered showers and thunderstorms. Mostly cloudy, with a low around 70. Southeast wind 5 to 10 mph becoming northeast after midnight. Chance of precipitation is 50%.

Wednesday

Scattered showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 88. Northeast wind 5 to 10 mph becoming east southeast in the afternoon. Chance of precipitation is 60%.

Wednesday Night

Scattered showers and thunderstorms. Mostly cloudy, with a low around 70. Chance of precipitation is 30%.

Thursday

Scattered showers and thunderstorms. Partly sunny, with a high near 87. Chance of precipitation is 50%.

Thursday Night

Isolated showers and thunderstorms. Mostly cloudy, with a low around 70. Chance of precipitation is 20%.

Friday

Scattered showers and thunderstorms. Partly sunny, with a high near 89. Chance of precipitation is 30%.