Heavy to Excessive Rains in The Four Corners Region and Midwest; Heat Persists in the South-Central U.S.

Repeated rounds of showers and thunderstorms could bring a flash flooding threat across the Four Corners region and from the mid-Mississippi Valley into the lower Great Lakes. Hot temperatures and high humidity will continue to challenge daily records from the Southern Plains to the lower Mississippi Valley. Read More >

Hazardous Weather Conditions

Current conditions at

Siloam Springs, Smith Field Airport (KSLG)

Lat: 36.2°NLon: 94.48°WElev: 1194ft.

Fair

88°F

31°C

Humidity 57%
Wind Speed S 9 mph
Barometer 30.25 in (1022.9 mb)
Dewpoint 71°F (22°C)
Visibility 10.00 mi
Heat Index94°F (34°C)
Last update 16 Sep 9:56 am CDT
Extended Forecast for

Siloam Springs AR

  • Today

    Today: A 20 percent chance of showers and thunderstorms after 1pm.  Increasing clouds, with a high near 98. Heat index values as high as 104. South wind around 10 mph.

    High: 98 °F

    Sunny then
    Slight Chance
    T-storms

  • Tonight

    Tonight: Mostly clear, with a low around 74. South wind around 5 mph.

    Low: 74 °F

    Mostly Clear

  • Thursday

    Thursday: A 20 percent chance of showers and thunderstorms after 1pm.  Sunny, with a high near 96. Heat index values as high as 100. South wind around 5 mph.

    High: 96 °F

    Sunny then
    Slight Chance
    T-storms

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 73. Calm wind becoming southeast around 5 mph.

    Low: 73 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 96. Light south wind increasing to 5 to 10 mph in the morning.

    High: 96 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 72. South wind around 5 mph.

    Low: 72 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 97. Southwest wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 97 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 71. South wind around 5 mph.

    Low: 71 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 94. Southwest wind 5 to 10 mph.

    High: 94 °F

    Mostly Sunny

Detailed Forecast

Today
A 20 percent chance of showers and thunderstorms after 1pm. Increasing clouds, with a high near 98. Heat index values as high as 104. South wind around 10 mph.
Tonight
Mostly clear, with a low around 74. South wind around 5 mph.
Thursday
A 20 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 96. Heat index values as high as 100. South wind around 5 mph.
Thursday Night
Mostly clear, with a low around 73. Calm wind becoming southeast around 5 mph.
Friday
Sunny, with a high near 96. Light south wind increasing to 5 to 10 mph in the morning.
Friday Night
Mostly clear, with a low around 72. South wind around 5 mph.
Saturday
Sunny, with a high near 97. Southwest wind 5 to 10 mph, with gusts as high as 20 mph.
Saturday Night
Mostly clear, with a low around 71. South wind around 5 mph.
Sunday
Mostly sunny, with a high near 94. Southwest wind 5 to 10 mph.
Sunday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 68. Southwest wind around 5 mph becoming north after midnight.
Monday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 87. Northeast wind around 5 mph becoming west in the afternoon.
Monday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 64. North wind around 5 mph becoming east after midnight.
Tuesday
A 30 percent chance of showers. Mostly sunny, with a high near 85. East wind around 5 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
Siloam Springs AR
 36.19°N 94.53°W
6:51 am CDT Sep 16, 2026
10am CDT Sep 16, 2026-6pm CDT Sep 22, 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