Flooding Threat Along the Gulf Coast, Southern Rockies and High Plains; Cooler Weather in the Central and Eastern U.S.

Strong thunderstorms may bring excessive rainfall and flooding over parts of the northern Gulf Coast today and over parts of the southern Rockies into the High Plains today through the weekend. A refreshingly cool and dry air mass will continue to produce below average temperatures across the central and eastern U.S. through the weekend. Read More >

Hazardous Weather Conditions

Flood Watch in effect from August 31, 12:00 PM CDT until September 1, 12:00 PM CDT

Current conditions at

San Marcos, San Marcos Municipal Airport (KHYI)

Lat: 29.89°NLon: 97.86°WElev: 597ft.

Fair

91°F

33°C

Humidity	54%
Wind Speed	S 8 mph
Barometer	30.03 in (1015.7 mb)
Dewpoint	72°F (22°C)
Visibility	10.00 mi
Heat Index	99°F (37°C)
Last update	31 Aug 11:56 am CDT

More Information:

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

Extended Forecast for

Mountain City TX

Flood Watch until September 1, 12:00pm

Click here for hazard details and duration

Flood Watch

Flood Watch until September 1, 12:00pm
NOW until 12:00pm Mon
Flood Watch
This Afternoon
High: 89 °F
T-storms
Likely
Tonight
Low: 71 °F
Scattered
T-storms
Labor Day
High: 88 °F
Scattered
Showers then
Scattered
T-storms
Monday Night
Low: 69 °F
Partly Cloudy
Tuesday
High: 94 °F
Sunny
Tuesday Night
Low: 67 °F
Mostly Clear
Wednesday
High: 94 °F
Sunny
Wednesday Night
Low: 65 °F
Mostly Clear

Detailed Forecast

This Afternoon

Showers and thunderstorms likely, mainly between 1pm and 4pm, then showers likely and possibly a thunderstorm after 4pm. Partly sunny, with a high near 89. East northeast wind around 5 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

Tonight

Scattered showers and thunderstorms. Mostly cloudy, with a low around 71. North northeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 40%.

Labor Day

Scattered showers, with thunderstorms also possible after 10am. Partly sunny, with a high near 88. North wind around 5 mph. Chance of precipitation is 40%.

Monday Night

Partly cloudy, with a low around 69. Northeast wind around 5 mph becoming calm in the evening.

Tuesday

Sunny, with a high near 94. North northeast wind around 5 mph.

Tuesday Night

Mostly clear, with a low around 67. North northeast wind around 5 mph becoming calm in the evening.

Wednesday

Sunny, with a high near 94. North wind around 5 mph.

Wednesday Night

Mostly clear, with a low around 65. Northeast wind around 5 mph becoming calm in the evening.

Thursday

Sunny, with a high near 96. Calm wind becoming southeast around 5 mph in the afternoon.