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

Heavy Rainfall and Flooding Threats in the Midwest and Ohio Valley; Heat Continues in the Plains and Southeast

An active pattern will continue to bring heavy to excessive rainfall and flash flooding threats to the Midwest and Ohio Valley over the next couple of days. Dangerous heat continues across the central/southern Plains and Southeast U.S. into next week. There is potential for record-tying/breaking temperatures with many areas forecast to see their hottest temperatures so far this year. Read More >

Hazardous Weather Conditions

Current conditions at

Siloam Springs, Smith Field Airport (KSLG)

Lat: 36.2°NLon: 94.48°WElev: 1194ft.

A Few Clouds

99°F

37°C

Humidity 39%
Wind Speed S 20 mph
Barometer 29.91 in (1011.1 mb)
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Heat Index106°F (41°C)
Last update 13 Aug 2:56 pm CDT
Extended Forecast for

Siloam Spgs Arpt AR

Heat Advisory August 13, 03:31pm until August 16, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory August 13, 03:31pm until August 16, 08:00pm

    NOW until 8:00pm Sun

    Heat Advisory

  • This Afternoon

    High: 99 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 78. South wind around 10 mph, with gusts as high as 20 mph.

    Low: 78 °F

    Clear

  • Friday

    Friday: Sunny and hot, with a high near 100. Heat index values as high as 106. South wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 100 °F

    Hot

  • Friday Night

    Friday Night: Clear, with a low around 76. South wind 5 to 10 mph.

    Low: 76 °F

    Clear

  • Saturday

    Saturday: Sunny and hot, with a high near 100. Southwest wind 5 to 10 mph.

    High: 100 °F

    Hot

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 77. South wind 5 to 10 mph.

    Low: 77 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny and hot, with a high near 101. Southwest wind 5 to 10 mph.

    High: 101 °F

    Hot

  • Sunday Night

    Sunday Night: A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 75. Southwest wind around 5 mph.

    Low: 75 °F

    Slight Chance
    T-storms

Detailed Forecast

This Afternoon
Sunny, with a high near 99. Heat index values as high as 108. Southwest wind around 15 mph, with gusts as high as 20 mph.
Tonight
Clear, with a low around 78. South wind around 10 mph, with gusts as high as 20 mph.
Friday
Sunny and hot, with a high near 100. Heat index values as high as 106. South wind 10 to 15 mph, with gusts as high as 20 mph.
Friday Night
Clear, with a low around 76. South wind 5 to 10 mph.
Saturday
Sunny and hot, with a high near 100. Southwest wind 5 to 10 mph.
Saturday Night
Mostly clear, with a low around 77. South wind 5 to 10 mph.
Sunday
Sunny and hot, with a high near 101. Southwest wind 5 to 10 mph.
Sunday Night
A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 75. Southwest wind around 5 mph.
Monday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 97. Calm wind becoming northwest around 5 mph in the morning.
Monday Night
Partly cloudy, with a low around 73. North wind around 5 mph becoming east after midnight.
Tuesday
Sunny, with a high near 98. Southeast wind 5 to 10 mph becoming southwest in the morning.
Tuesday Night
Mostly clear, with a low around 76. South wind around 5 mph.
Wednesday
Sunny and hot, with a high near 100. Southwest wind 5 to 10 mph, with gusts as high as 20 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Siloam Spgs Arpt AR
 36.19°N 94.5°W
Last Update:
2:50 pm CDT Aug 13, 2026
Forecast Valid:
3pm CDT Aug 13, 2026-6pm CDT Aug 19, 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