National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Severe Thunderstorms, Heavy Rainfall and Dangerous Heat

Severe thunderstorms are expected today and Friday from the upper Midwest, central Great Lakes into the Ohio and mid-Mississippi Valley's. In addition, heavy rainfall threat increases on Friday across the Ohio Valley. Meanwhile, early summer-like heat wave across portions of southern Texas with new daily records are forecast today and through the weekend; The heat spreads across the Gulf States. Read More >

Hazardous Weather Conditions

Current conditions at

Fort Smith Regional Airport (KFSM)

Lat: 35.33°NLon: 94.37°WElev: 436ft.

Partly Cloudy

72°F

22°C

Humidity 82%
Wind Speed Calm
Barometer 29.78 in (1008.1 mb)
Dewpoint 66°F (19°C)
Visibility 10.00 mi
Last update 15 May 10:53 pm CDT
Extended Forecast for

Lavaca AR

  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms before 4am. Mostly cloudy, with a low around 66. Calm wind.

    Low: 66 °F

    Slight Chance
    T-storms

  • Friday

    Friday: A 30 percent chance of showers and thunderstorms, mainly between 10am and 1pm. Mostly sunny, with a high near 89. East wind 5 to 15 mph becoming west in the afternoon. Winds could gust as high as 30 mph.

    High: 89 °F

    Chance
    Showers

  • Friday Night

    Friday Night: Mostly clear, with a low around 60. West wind 5 to 10 mph becoming light and variable in the evening.

    Low: 60 °F

    Mostly Clear

  • Saturday

    Saturday: A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 89. Calm wind becoming southeast around 5 mph in the afternoon.

    High: 89 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Saturday Night

    Saturday Night: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 67. Southeast wind around 5 mph.

    Low: 67 °F

    Chance
    T-storms

  • Sunday

    Sunday: A chance of showers, with thunderstorms also possible after 10am. Partly sunny, with a high near 86. South wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 50%.

    High: 86 °F

    Chance
    Showers then
    Chance
    T-storms

  • Sunday Night

    Sunday Night: A 50 percent chance of showers and thunderstorms. Some of the storms could produce heavy rainfall. Mostly cloudy, with a low around 68. Southeast wind around 10 mph, with gusts as high as 20 mph.

    Low: 68 °F

    Heavy Rain

  • Monday

    Monday: A 30 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 87. South wind 5 to 15 mph, with gusts as high as 25 mph.

    High: 87 °F

    Partly Sunny
    then Chance
    T-storms

  • Monday Night

    Monday Night: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 69. Southeast wind around 10 mph, with gusts as high as 20 mph.

    Low: 69 °F

    Chance
    T-storms

Detailed Forecast

Tonight
A 20 percent chance of showers and thunderstorms before 4am. Mostly cloudy, with a low around 66. Calm wind.
Friday
A 30 percent chance of showers and thunderstorms, mainly between 10am and 1pm. Mostly sunny, with a high near 89. East wind 5 to 15 mph becoming west in the afternoon. Winds could gust as high as 30 mph.
Friday Night
Mostly clear, with a low around 60. West wind 5 to 10 mph becoming light and variable in the evening.
Saturday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 89. Calm wind becoming southeast around 5 mph in the afternoon.
Saturday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 67. Southeast wind around 5 mph.
Sunday
A chance of showers, with thunderstorms also possible after 10am. Partly sunny, with a high near 86. South wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 50%.
Sunday Night
A 50 percent chance of showers and thunderstorms. Some of the storms could produce heavy rainfall. Mostly cloudy, with a low around 68. Southeast wind around 10 mph, with gusts as high as 20 mph.
Monday
A 30 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 87. South wind 5 to 15 mph, with gusts as high as 25 mph.
Monday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 69. Southeast wind around 10 mph, with gusts as high as 20 mph.
Tuesday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 84. Southwest wind 10 to 15 mph, with gusts as high as 25 mph.
Tuesday Night
Partly cloudy, with a low around 61. West wind 5 to 10 mph, with gusts as high as 20 mph.
Wednesday
Sunny, with a high near 78. West wind 5 to 10 mph, with gusts as high as 20 mph.
Wednesday Night
Mostly clear, with a low around 56. Northwest wind around 5 mph.
Thursday
Sunny, with a high near 78. Northwest wind 5 to 10 mph.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Lavaca AR
 35.34°N 94.17°W
Last Update:
10:50 pm CDT May 15, 2025
Forecast Valid:
11pm CDT May 15, 2025-6pm CDT May 22, 2025
 
Forecast Discussion
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation