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

Severe Weather in the Central Plains; Fire Concerns in the Southern High Plains and Southwest; Late-Season Mountain Snow

Severe storms, including large hail, wind, and perhaps a couple of tornadoes, are possible in the central Plains. Dry, windy conditions and lightning from dry thunderstorms may produce hazardous fire conditions in the Southwest and southern High Plains. Late-season snow is expected in the Northwest and the Great Basin. Heat is spreading across the eastern U.S.. Read More >

Hazardous Weather Conditions

Current conditions at

Fort Smith Regional Airport (KFSM)

Lat: 35.33°NLon: 94.37°WElev: 436ft.

Fair

85°F

29°C

Humidity 51%
Wind Speed SE 8 mph
Barometer 29.87 in (1010.7 mb)
Dewpoint 65°F (18°C)
Visibility 10.00 mi
Heat Index87°F (31°C)
Last update 16 May 2:53 pm CDT
Extended Forecast for

Lavaca AR

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 90. South wind around 15 mph, with gusts as high as 20 mph.

    High: 90 °F

    Mostly Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 69. Southeast wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 69 °F

    Increasing
    Clouds

  • Sunday

    Sunday: A 20 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 88. South wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 88 °F

    Partly Sunny
    then Slight
    Chance
    T-storms

  • Sunday Night

    Sunday Night: A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 71. Southeast wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 71 °F

    Chance
    T-storms

  • Monday

    Monday: A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 88. South wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 88 °F

    Chance
    T-storms

  • Monday Night

    Monday Night: A 40 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 72. South wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 72 °F

    Chance
    T-storms then
    Chance
    Showers

  • Tuesday

    Tuesday: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1pm. High near 85. South wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 80%.

    High: 85 °F

    Chance
    T-storms then
    Showers

  • Tuesday Night

    Tuesday Night: Showers and possibly a thunderstorm. Low around 66. Southwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 80%.

    Low: 66 °F

    Showers

  • Wednesday

    Wednesday: Showers likely and possibly a thunderstorm. Cloudy, with a high near 77. Northeast wind around 5 mph. Chance of precipitation is 60%.

    High: 77 °F

    Showers
    Likely

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 90. South wind around 15 mph, with gusts as high as 20 mph.
Tonight
Increasing clouds, with a low around 69. Southeast wind 5 to 10 mph, with gusts as high as 20 mph.
Sunday
A 20 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 88. South wind 10 to 15 mph, with gusts as high as 25 mph.
Sunday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 71. Southeast wind 10 to 15 mph, with gusts as high as 20 mph.
Monday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 88. South wind 10 to 15 mph, with gusts as high as 25 mph.
Monday Night
A 40 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 72. South wind 10 to 15 mph, with gusts as high as 25 mph.
Tuesday
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1pm. High near 85. South wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 80%.
Tuesday Night
Showers and possibly a thunderstorm. Low around 66. Southwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 80%.
Wednesday
Showers likely and possibly a thunderstorm. Cloudy, with a high near 77. Northeast wind around 5 mph. Chance of precipitation is 60%.
Wednesday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 62. Northeast wind around 5 mph.
Thursday
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 77. East wind 5 to 10 mph.
Thursday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 61. East wind around 5 mph.
Friday
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 79. East wind around 5 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Lavaca AR
 35.34°N 94.17°W
Last Update:
2:50 pm CDT May 16, 2026
Forecast Valid:
3pm CDT May 16, 2026-6pm CDT May 22, 2026
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation