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.

Fair

75°F

24°C

Humidity	84%
Wind Speed	E 7 mph
Barometer	29.97 in (1014.3 mb)
Dewpoint	70°F (21°C)
Visibility	10.00 mi
Last update	24 May 8:56 pm CDT

More Information:

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

Extended Forecast for

San Marcos TX

Tonight
Low: 68 °F
Partly Cloudy
Memorial Day
High: 88 °F
Mostly Sunny
then Slight
Chance
T-storms
Monday Night
Low: 69 °F
Slight Chance
T-storms then
Partly Cloudy
Tuesday
High: 86 °F
Partly Sunny
then Slight
Chance
T-storms
Tuesday Night
Low: 72 °F
Chance
Showers then
Showers
Wednesday
High: 81 °F
Showers
Wednesday Night
Low: 70 °F
Chance
Showers
Thursday
High: 87 °F
Slight Chance
T-storms
Thursday Night
Low: 71 °F
Partly Cloudy

Detailed Forecast

Tonight

Partly cloudy, with a low around 68. East wind around 5 mph becoming calm.

Memorial Day

A 20 percent chance of showers and thunderstorms after 4pm. Mostly sunny, with a high near 88. Calm wind becoming east around 5 mph in the afternoon.

Monday Night

A slight chance of showers and thunderstorms before 7pm, then a slight chance of showers between 7pm and 10pm. Partly cloudy, with a low around 69. East wind around 5 mph becoming calm in the evening. Chance of precipitation is 20%.

Tuesday

A 20 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 86. Light east southeast 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. Low around 72. Southeast wind 5 to 10 mph. Chance of precipitation is 90%.

Wednesday

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

Wednesday Night

A 30 percent chance of showers and thunderstorms, mainly before 1am. Mostly cloudy, with a low around 70. Southeast wind around 5 mph becoming calm in the evening.

Thursday

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

Thursday Night

Partly cloudy, with a low around 71. East southeast wind around 5 mph becoming calm in the evening.

Friday

Mostly sunny, with a high near 89.

Friday Night

A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 72.

Saturday

Partly sunny, with a high near 90.

Saturday Night

A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 72.