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Heavy rain and severe weather will exacerbate ongoing flooding in the central and southern U.S.

Additional heavy rain will increase the threat of flooding in the central and southern U.S. this weekend. There is a High Risk of excessive rainfall for parts of ArkLaTex, as well as the Mid-Mississippi and Lower Ohio River Valleys on Saturday. Severe thunderstorms, some of which could include significant tornadoes and very large hail, are also possible on Saturday for much of the same area. Read More >

Current conditions at

San Marcos, San Marcos Municipal Airport (KHYI)

Lat: 29.89°NLon: 97.86°WElev: 597ft.

Overcast

68°F

20°C

Humidity 96%
Wind Speed S 14 mph
Barometer 29.92 in (1012.4 mb)
Dewpoint 67°F (19°C)
Visibility 7.00 mi
Last update 24 Feb 3:56 am CST
Extended Forecast for

4 Miles SW San Marcos TX

  • Overnight

    Overnight: A 50 percent chance of showers and thunderstorms.  Patchy fog.  Otherwise, cloudy, with a low around 65. South wind around 10 mph.  New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Chance
    Showers and
    Patchy Fog

    Low: 65 °F

  • Saturday

    Saturday: A 50 percent chance of showers and thunderstorms.  Patchy fog before noon.  Otherwise, cloudy, with a high near 76. South wind 10 to 15 mph becoming west northwest in the afternoon.  New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Chance
    Showers and
    Patchy Fog
    then Chance
    T-storms

    High: 76 °F

  • Saturday
    Night

    Saturday Night: Mostly cloudy, with a low around 50. North northwest wind 5 to 10 mph.

    Mostly Cloudy

    Low: 50 °F

  • Sunday

    Sunday: A 30 percent chance of showers and thunderstorms.  Partly sunny, with a high near 64. North wind 5 to 10 mph becoming east in the afternoon.

    Chance
    Showers

    High: 64 °F

  • Sunday
    Night

    Sunday Night: Partly cloudy, with a low around 44. East wind around 5 mph becoming north northwest in the evening.

    Partly Cloudy

    Low: 44 °F

  • Monday

    Monday: Sunny, with a high near 73. North wind 5 to 10 mph becoming east in the afternoon.

    Sunny

    High: 73 °F

  • Monday
    Night

    Monday Night: Patchy drizzle with a slight chance of showers after midnight.  Patchy fog after midnight.  Otherwise, mostly cloudy, with a low around 52. East southeast wind 5 to 10 mph.

    Mostly Cloudy
    then Patchy
    Drizzle and
    Patchy Fog

    Low: 52 °F

  • Tuesday

    Tuesday: A chance of showers, with thunderstorms also possible after noon.  Patchy fog before noon.  Otherwise, cloudy, with a high near 70. South southeast wind 5 to 10 mph.  Chance of precipitation is 40%.

    Chance
    Showers and
    Patchy Fog

    High: 70 °F

  • Tuesday
    Night

    Tuesday Night: A 20 percent chance of showers and thunderstorms.  Mostly cloudy, with a low around 61. South southeast wind around 10 mph.

    Slight Chance
    T-storms

    Low: 61 °F

Detailed Forecast

Overnight
A 50 percent chance of showers and thunderstorms. Patchy fog. Otherwise, cloudy, with a low around 65. South wind around 10 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday
A 50 percent chance of showers and thunderstorms. Patchy fog before noon. Otherwise, cloudy, with a high near 76. South wind 10 to 15 mph becoming west northwest in the afternoon. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday Night
Mostly cloudy, with a low around 50. North northwest wind 5 to 10 mph.
Sunday
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 64. North wind 5 to 10 mph becoming east in the afternoon.
Sunday Night
Partly cloudy, with a low around 44. East wind around 5 mph becoming north northwest in the evening.
Monday
Sunny, with a high near 73. North wind 5 to 10 mph becoming east in the afternoon.
Monday Night
Patchy drizzle with a slight chance of showers after midnight. Patchy fog after midnight. Otherwise, mostly cloudy, with a low around 52. East southeast wind 5 to 10 mph.
Tuesday
A chance of showers, with thunderstorms also possible after noon. Patchy fog before noon. Otherwise, cloudy, with a high near 70. South southeast wind 5 to 10 mph. Chance of precipitation is 40%.
Tuesday Night
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 61. South southeast wind around 10 mph.
Wednesday
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 74.
Wednesday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 54.
Thursday
Mostly sunny, with a high near 69.
Thursday Night
Partly cloudy, with a low around 47.
Friday
Mostly sunny, with a high near 69.
Click Map For Forecast
Point Forecast:
4 Miles SW San Marcos TX
 29.83°N 97.96°W (Elev. 630 ft)
4:43 am CST Feb 24, 2018
4am CST Feb 24, 2018-6pm CST Mar 2, 2018
 
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