Storm Systems to Impact the Central and Eastern U.S. Through the Weekend

Two storm systems will track through the central and eastern U.S. today through this weekend with areas of gusty winds, rain and heavy snow. Severe thunderstorms and heavy to excessive rainfall is forecast today from the Lower Mississippi River Valley to the Tennessee Valley. Damaging winds, a few tornadoes, and areas of flooding are possible. Read More >

Current conditions at

San Marcos, San Marcos Municipal Airport (KHYI)

Lat: 29.89°NLon: 97.86°WElev: 597ft.

Fog/Mist

65°F

18°C

Humidity	81%
Wind Speed	NA
Barometer	29.97 in (1014.5 mb)
Dewpoint	59°F (15°C)
Visibility	10.00 mi
Last update	9 Jan 10:56 am CST

More Information:

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

Extended Forecast for

4 Miles NNW San Marcos Municipal Airport TX

Today
High: 73 °F
Showers
Likely
Tonight
Low: 44 °F
Slight Chance
Showers then
Partly Cloudy
Saturday
High: 59 °F
Mostly Sunny
Saturday Night
Low: 31 °F
Mostly Cloudy
Sunday
High: 62 °F
Partly Sunny
Sunday Night
Low: 36 °F
Mostly Cloudy
Monday
High: 62 °F
Partly Sunny
Monday Night
Low: 39 °F
Mostly Cloudy
then Slight
Chance
Showers
Tuesday
High: 63 °F
Mostly Sunny

Detailed Forecast

Today

A chance of showers and thunderstorms before noon, then showers likely and possibly a thunderstorm between noon and 3pm, then a chance of showers and thunderstorms after 3pm. Cloudy, with a high near 73. North wind 5 to 10 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Tonight

A 20 percent chance of showers before 9pm. Partly cloudy, with a low around 44. North northwest wind 5 to 10 mph increasing to 15 to 20 mph after midnight. Winds could gust as high as 30 mph.

Saturday

Mostly sunny, with a high near 59. North wind 15 to 20 mph, with gusts as high as 35 mph.

Saturday Night

Mostly cloudy, with a low around 31. North wind 10 to 15 mph, with gusts as high as 25 mph.

Sunday

Partly sunny, with a high near 62. North northwest wind 5 to 10 mph becoming northeast in the afternoon. Winds could gust as high as 20 mph.

Sunday Night

Mostly cloudy, with a low around 36. Northeast wind around 5 mph becoming calm in the evening.

Monday

Partly sunny, with a high near 62. Calm wind becoming south southeast around 5 mph.

Monday Night

A 20 percent chance of showers after midnight. Mostly cloudy, with a low around 39. South southeast wind around 5 mph becoming calm.