Risks of Severe Thunderstorms and Excessive Rainfall in the Central U.S.; Fire Weather Concerns in Alaska and Southwest

An expansive storm system will bring widespread storms with a threat for flash flooding and severe weather to much of the central to eastern U.S. into early this week. Critical fire weather conditions are expected across interior Alaska this weekend. Elevated fire conditions also expected in the Southwest U.S.. Conditions will remain uncomfortably hot across the southern Plains and the Southeast. Read More >

Current conditions at

San Marcos, San Marcos Municipal Airport (KHYI)

Lat: 29.89°NLon: 97.86°WElev: 597ft.

Mostly Cloudy

73°F

23°C

Humidity	96%
Wind Speed	Calm
Barometer	29.86 in (1010.6 mb)
Dewpoint	72°F (22°C)
Visibility	9.00 mi
Last update	21 Jun 3:56 am CDT

More Information:

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

Extended Forecast for

5 Miles SW San Marcos TX

Today
High: 90 °F
Slight Chance
T-storms
Tonight
Low: 77 °F
Mostly Cloudy
Monday
High: 93 °F
Decreasing
Clouds
Monday Night
Low: 77 °F
Increasing
Clouds
Tuesday
High: 94 °F
Mostly Sunny
Tuesday Night
Low: 75 °F
Mostly Clear
Wednesday
High: 94 °F
Sunny
Wednesday Night
Low: 73 °F
Mostly Clear
Thursday
High: 94 °F
Mostly Sunny

Detailed Forecast

Today

A slight chance of showers and thunderstorms between 7am and 1pm. Partly sunny, with a high near 90. Heat index values as high as 102. South wind 5 to 10 mph increasing to 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph. Chance of precipitation is 20%.

Tonight

Mostly cloudy, with a low around 77. South southeast wind 10 to 15 mph, with gusts as high as 20 mph.

Monday

Mostly cloudy, then gradually becoming sunny, with a high near 93. Heat index values as high as 105. South wind 10 to 15 mph, with gusts as high as 25 mph.

Monday Night

Increasing clouds, with a low around 77. South wind 10 to 15 mph, with gusts as high as 20 mph.

Tuesday

Mostly sunny, with a high near 94. South wind around 10 mph, with gusts as high as 20 mph.

Tuesday Night

Mostly clear, with a low around 75. South southeast wind 10 to 15 mph, with gusts as high as 20 mph.

Wednesday

Sunny, with a high near 94. South wind 5 to 10 mph, with gusts as high as 20 mph.

Wednesday Night

Mostly clear, with a low around 73. South wind 5 to 15 mph, with gusts as high as 20 mph.

Thursday

Mostly sunny, with a high near 94. South wind 5 to 10 mph, with gusts as high as 20 mph.