National Weather Service United States Department of Commerce

Heavy rain possible for the northern Rockies & Plains; severe storms for the Northern Plains

An unseasonably strong storm system in the northwest U.S. will bring showers and thunderstorms, with locally heavy rainfall, to the northern Rockies and northern Plains. Isolated flash floods will be possible in these areas. Some storms could become severe in parts of the Dakotas into Minnesota, with large hail and damaging winds. In addition, temperatures will be 10 to 20 degrees below average.
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Hazardous Weather Conditions

Current Conditions

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San Marcos TX

7 Day Forecast

Today

Hot

Hot

High: 99 °F

Tonight

Partly Cloudy

Partly
Cloudy

Low: 76 °F

Sunday

Hot

Hot

High: 99 °F

Sunday
Night

Partly Cloudy

Partly
Cloudy

Low: 74 °F

Monday

Hot

Hot

High: 99 °F

Monday
Night

Partly Cloudy

Partly
Cloudy

Low: 75 °F

Tuesday

Hot

Hot

High: 99 °F

Tuesday
Night

Partly Cloudy

Partly
Cloudy

Low: 75 °F

Wednesday

Hot

Hot

High: 98 °F

Detailed Forecast

  • Today Sunny and hot, with a high near 99. Heat index values as high as 102. South wind around 10 mph.
  • Tonight Partly cloudy, with a low around 76. South southeast wind 5 to 15 mph.
  • Sunday Mostly sunny and hot, with a high near 99. South wind 5 to 10 mph.
  • Sunday Night Partly cloudy, with a low around 74. South southwest wind 5 to 10 mph.
  • Monday Mostly sunny and hot, with a high near 99. South southwest wind 5 to 10 mph becoming southeast in the afternoon.
  • Monday Night Partly cloudy, with a low around 75. Southeast wind 5 to 10 mph becoming southwest after midnight.
  • Tuesday Mostly sunny and hot, with a high near 99. Calm wind becoming southeast around 5 mph in the afternoon.
  • Tuesday Night Partly cloudy, with a low around 75. East southeast wind 5 to 10 mph becoming south after midnight.
  • Wednesday Mostly sunny and hot, with a high near 98. Calm wind becoming east around 5 mph in the afternoon.
  • Wednesday Night Mostly cloudy, with a low around 74.
  • Thursday A 20 percent chance of showers and thunderstorms. Partly sunny and hot, with a high near 97.
  • Thursday Night A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 74.
  • Friday A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 96.