Unsettled Weather in the Eastern U.S. through Memorial Day

Showers and thunderstorms are expected from Texas to the Northeast through Tuesday. Heavy rain will create mainly localized areas of flash flooding across the central Gulf Coast into the Appalachians. Elevated to Critical fire weather conditions due to gusty winds and low humidity are expected through Tuesday across Oregon and Nevada. Showers and thunderstorms will develop over the Northwest. Read More >

Current conditions at

San Marcos, San Marcos Municipal Airport (KHYI)

Lat: 29.89°NLon: 97.86°WElev: 597ft.

Mostly Cloudy

83°F

28°C

Humidity	61%
Wind Speed	Vrbl 7 mph
Barometer	29.99 in (1014.7 mb)
Dewpoint	68°F (20°C)
Visibility	10.00 mi
Heat Index	86°F (30°C)
Last update	25 May 12:56 pm CDT

More Information:

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

Extended Forecast for

5 Miles SW San Marcos TX

Memorial Day
High: 88 °F
Slight Chance
T-storms
Tonight
Low: 69 °F
Slight Chance
T-storms then
Mostly Clear
Tuesday
High: 86 °F
Mostly Sunny
Tuesday Night
Low: 70 °F
Chance
T-storms then
Heavy Rain
Wednesday
High: 81 °F
Showers
Wednesday Night
Low: 70 °F
Slight Chance
T-storms
Thursday
High: 87 °F
Partly Sunny
then Slight
Chance
T-storms
Thursday Night
Low: 72 °F
Mostly Clear
Friday
High: 89 °F
Mostly Sunny

Detailed Forecast

Memorial Day

A 20 percent chance of showers and thunderstorms after 4pm. Mostly sunny, with a high near 88. East southeast wind around 5 mph.

Tonight

A 10 percent chance of showers and thunderstorms before 7pm. Mostly clear, with a low around 69. East wind around 5 mph becoming calm in the evening.

Tuesday

Mostly sunny, with a high near 86. Light and variable wind becoming southeast 5 to 10 mph in the afternoon.

Tuesday Night

A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1am. Some of the storms could produce heavy rainfall. Low around 70. South southeast wind 5 to 10 mph. Chance of precipitation is 90%.

Wednesday

Showers and possibly a thunderstorm. High near 81. East southeast wind around 5 mph. Chance of precipitation is 80%.

Wednesday Night

A 20 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 70. East southeast wind around 5 mph becoming calm in the evening.

Thursday

A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 87. Calm wind becoming east around 5 mph in the afternoon.

Thursday Night

Mostly clear, with a low around 72. East wind around 5 mph becoming calm in the evening.

Friday

Mostly sunny, with a high near 89. Calm wind becoming south southeast around 5 mph in the afternoon.

Friday Night

Partly cloudy, with a low around 72.

Saturday

Partly sunny, with a high near 89.

Saturday Night

A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 73.