Areas of Excessive Rainfall and Severe Thunderstorms; Fire Weather Concerns in the Northern Plains and Four Corners Region

Widespread showers and thunderstorms may bring areas of flash flooding across much of the Southern Plains into the Gulf Coast region and the upper Ohio River Valley into the Mid-Atlantic. A large Pacific storm will bring widespread rain, gusty winds, and mountain snow to California and the Great Basin. Fire weather concerns expected in the Northern Plains and the Four Corners region. Read More >

Current conditions at

San Marcos, San Marcos Municipal Airport (KHYI)

Lat: 29.89°NLon: 97.86°WElev: 597ft.

Partly Cloudy

81°F

27°C

Humidity 69%
Wind Speed SE 10 mph
Barometer 29.75 in (1006.6 mb)
Dewpoint 70°F (21°C)
Visibility 9.00 mi
Heat Index84°F (29°C)
Last update 26 May 7:56 pm CDT
Extended Forecast for

5 Miles SSE Wimberley TX

Flood Watch May 26, 08:43pm until May 27, 08:00am
Click here for hazard details and duration
Flood Watch
  •  
    Flood Watch May 26, 08:43pm until May 27, 08:00am

    NOW until 8:00am Wed

    Flood Watch

  • Tonight

    Low: 69 °F

    Showers then
    T-storms

  • Wednesday

    Wednesday: A 40 percent chance of showers and thunderstorms.  Cloudy, then gradually becoming mostly sunny, with a high near 82. East southeast wind around 5 mph.

    High: 82 °F

    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A slight chance of showers and thunderstorms between 10pm and 1am.  Mostly cloudy, with a low around 68. East wind around 5 mph becoming calm  in the evening.  Chance of precipitation is 20%.

    Low: 68 °F

    Slight Chance
    T-storms

  • Thursday

    Thursday: A 20 percent chance of showers and thunderstorms after 1pm.  Mostly cloudy, then gradually becoming sunny, with a high near 86. East wind around 5 mph.

    High: 86 °F

    Mostly Cloudy
    then Slight
    Chance
    T-storms

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 71. East wind around 5 mph becoming calm  in the evening.

    Low: 71 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 89. South southeast wind around 5 mph.

    High: 89 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 73. Southeast wind around 5 mph.

    Low: 73 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 88. South southwest wind around 5 mph.

    High: 88 °F

    Partly Sunny

Detailed Forecast

Tonight
Showers and possibly a thunderstorm. Low around 69. South southeast wind 5 to 10 mph becoming north after midnight. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.
Wednesday
A 40 percent chance of showers and thunderstorms. Cloudy, then gradually becoming mostly sunny, with a high near 82. East southeast wind around 5 mph.
Wednesday Night
A slight chance of showers and thunderstorms between 10pm and 1am. Mostly cloudy, with a low around 68. East wind around 5 mph becoming calm in the evening. Chance of precipitation is 20%.
Thursday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly cloudy, then gradually becoming sunny, with a high near 86. East wind around 5 mph.
Thursday Night
Partly cloudy, with a low around 71. East wind around 5 mph becoming calm in the evening.
Friday
Mostly sunny, with a high near 89. South southeast wind around 5 mph.
Friday Night
Partly cloudy, with a low around 73. Southeast wind around 5 mph.
Saturday
Partly sunny, with a high near 88. South southwest wind around 5 mph.
Saturday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 72. South wind around 5 mph.
Sunday
A 30 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 88.
Sunday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 72.
Monday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 87.
Monday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 70.
Tuesday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 85.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles SSE Wimberley TX
 29.92°N 98.07°W (Elev. 1047 ft)
8:36 pm CDT May 26, 2026
8pm CDT May 26, 2026-6pm CDT Jun 2, 2026
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database