Hot Temperatures in the Northwest U.S.; Excessive Rainfall Potential in the Southwest U.S.

Hot to extremely hot daytime temperatures remain in place across coastal southern California and the interior Northwest, with the Northwest carrying the potential for record-breaking high temperatures. A combination of monsoonal moisture and tropical moisture ahead of tropical cyclone Lorena will bring a marginal to slight risk of excessive rainfall across the southwest 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

79°F

26°C

Humidity	56%
Wind Speed	Calm
Barometer	29.99 in (1014.6 mb)
Dewpoint	62°F (17°C)
Visibility	10.00 mi
Heat Index	80°F (27°C)
Last update	2 Sep 11:56 pm CDT

More Information:

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

Extended Forecast for

San Marcos TX

Overnight
Low: 73 °F
Mostly Clear
Wednesday
High: 97 °F
Mostly Sunny
Wednesday Night
Low: 69 °F
Mostly Clear
Thursday
High: 101 °F
Hot
Thursday Night
Low: 73 °F
Partly Cloudy
Friday
High: 100 °F
Hot
Friday Night
Low: 73 °F
Mostly Cloudy
Saturday
High: 95 °F
Mostly Cloudy
then Slight
Chance
T-storms
Saturday Night
Low: 73 °F
Slight Chance
T-storms then
Chance
Showers

Detailed Forecast

Overnight

Mostly clear, with a low around 73. Calm wind.

Wednesday

Mostly sunny, with a high near 97. West northwest wind around 5 mph becoming north in the afternoon.

Wednesday Night

Mostly clear, with a low around 69. North northeast wind around 5 mph becoming calm in the evening.

Thursday

Sunny and hot, with a high near 101. Calm wind becoming southwest around 5 mph.

Thursday Night

Partly cloudy, with a low around 73. Southeast wind around 5 mph becoming south southwest after midnight.

Friday

Mostly sunny and hot, with a high near 100. South southwest wind around 5 mph.

Friday Night

Mostly cloudy, with a low around 73. South southeast wind around 5 mph becoming calm after midnight.

Saturday

A 20 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 95. Calm wind becoming east around 5 mph in the afternoon.

Saturday Night

A 30 percent chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 73. East northeast wind around 5 mph becoming calm after midnight.

Sunday

A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 90. Chance of precipitation is 60%.

Sunday Night

A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 72.

Monday

A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 89.

Monday Night

A 20 percent chance of showers. Partly cloudy, with a low around 70.

Tuesday

A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 90.