Tropical Storm and Storm Surge Warnings for the North Carolina Outer Banks; Heat Building in the West

Storm surge flooding and tropical storm conditions are expected in the Outer Banks beginning late Wednesday. Tropical Storm and Storm Surge Warnings are in effect. Tropical storm conditions are possible along the eastern shore of Virginia Thursday. Hurricane Erin will continue to produce life-threatening surf and rip currents along much of the east coast of the U.S. this week. Read More >

Current conditions at

San Marcos, San Marcos Municipal Airport (KHYI)

Lat: 29.89°NLon: 97.86°WElev: 597ft.

Fair

90°F

32°C

Humidity	48%
Wind Speed	S 6 mph
Barometer	29.95 in (1013.5 mb)
Dewpoint	68°F (20°C)
Visibility	10.00 mi
Heat Index	94°F (34°C)
Last update	19 Aug 7:56 pm CDT

More Information:

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

Extended Forecast for

2 Miles WSW San Marcos TX

Tonight
Low: 74 °F
Slight Chance
T-storms then
Mostly Clear
Wednesday
High: 99 °F
Sunny then
Chance
T-storms
Wednesday Night
Low: 75 °F
Chance
T-storms then
Chance
Showers
Thursday
High: 96 °F
Showers
Likely
Thursday Night
Low: 75 °F
Chance
T-storms then
Chance
Showers
Friday
High: 92 °F
Chance
Showers then
Chance
T-storms
Friday Night
Low: 73 °F
Slight Chance
Showers
Saturday
High: 95 °F
Chance
Showers
Saturday Night
Low: 74 °F
Mostly Clear

Detailed Forecast

Tonight

A 20 percent chance of showers and thunderstorms before 10pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 74. West wind around 5 mph becoming calm in the evening.

Wednesday

A slight chance of showers between 1pm and 4pm, then a chance of showers and thunderstorms after 4pm. Sunny and hot, with a high near 99. Heat index values as high as 104. Calm wind becoming east northeast around 5 mph in the afternoon. Chance of precipitation is 30%.

Wednesday Night

A chance of showers and thunderstorms. Partly cloudy, with a low around 75. East wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%.

Thursday

A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Mostly sunny, with a high near 96. Heat index values as high as 101. Calm wind becoming north around 5 mph in the morning. Chance of precipitation is 60%.

Thursday Night

A chance of showers and thunderstorms. Partly cloudy, with a low around 75. East northeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%.

Friday

A chance of showers and thunderstorms before 10am, then a chance of showers between 10am and 1pm, then a chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 92. Calm wind becoming east northeast around 5 mph in the afternoon. Chance of precipitation is 50%.

Friday Night

A 20 percent chance of showers. Partly cloudy, with a low around 73. East northeast wind around 5 mph becoming calm in the evening.

Saturday

A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Sunny, with a high near 95. Calm wind becoming east northeast around 5 mph in the afternoon. Chance of precipitation is 30%.

Saturday Night

Mostly clear, with a low around 74. East wind around 5 mph becoming calm in the evening.

Sunday

Sunny, with a high near 97.

Sunday Night

Mostly clear, with a low around 74.

Monday

A 20 percent chance of showers and thunderstorms. Sunny, with a high near 95.

Monday Night

Partly cloudy, with a low around 74.

Tuesday

A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 94.