Lowell to Impact Hawaii; Heat Persists in the South-Central U.S.

Hurricane Lowell is forecast to pass west of Kauai`s coastal waters tonight. Impacts such as high surf and heavy rain could impact all of the islands. Sweltering heat remains across the South-Central Plains and Lower/Middle Mississippi Valley into this week with limited nighttime relief. Periods of moderate to heavy rainfall will be possible through Tuesday morning in the northern Rockies. Read More >

Current conditions at

Siloam Springs, Smith Field Airport (KSLG)

Lat: 36.2°NLon: 94.48°WElev: 1194ft.

Fair

77°F

25°C

Humidity 77%
Wind Speed Calm
Barometer 29.97 in (1013.3 mb)
Dewpoint 69°F (21°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 6 Sep 9:56 pm CDT
Extended Forecast for

Siloam Springs AR

Heat Advisory September 7, 12:00pm until September 7, 07:00pm
Click here for hazard details and duration
Heat Advisory
  • Tonight

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

    Low: 74 °F

    Mostly Clear

  • Labor Day

    Labor Day: A 20 percent chance of showers and thunderstorms after 4pm.  Sunny and hot, with a high near 100. Heat index values as high as 105. East wind around 5 mph becoming south in the afternoon.

    High: 100 °F

    Sunny then
    Slight Chance
    T-storms

  • Monday Night

    Monday Night: Mostly clear, with a low around 74. Southeast wind around 5 mph.

    Low: 74 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny and hot, with a high near 100. Heat index values as high as 103. South wind around 5 mph.

    High: 100 °F

    Hot

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 76. South wind around 5 mph.

    Low: 76 °F

    Mostly Clear

  • Wednesday

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

    High: 100 °F

    Hot

  • Wednesday Night

    Wednesday Night: A 50 percent chance of showers and thunderstorms after 1am.  Partly cloudy, with a low around 73. South wind around 5 mph.

    Low: 73 °F

    Mostly Clear
    then Chance
    Showers

  • Thursday

    Thursday: Showers likely and possibly a thunderstorm before 1pm, then a slight chance of showers and thunderstorms after 1pm.  Partly sunny, with a high near 92. North wind around 5 mph becoming south in the morning.  Chance of precipitation is 60%.

    High: 92 °F

    Showers
    Likely

  • Thursday Night

    Thursday Night: A 30 percent chance of showers, mainly after 1am.  Partly cloudy, with a low around 69. Northeast wind around 5 mph becoming southeast after midnight.

    Low: 69 °F

    Chance
    Showers

Detailed Forecast

Tonight
Mostly clear, with a low around 74. East wind around 5 mph.
Labor Day
A 20 percent chance of showers and thunderstorms after 4pm. Sunny and hot, with a high near 100. Heat index values as high as 105. East wind around 5 mph becoming south in the afternoon.
Monday Night
Mostly clear, with a low around 74. Southeast wind around 5 mph.
Tuesday
Sunny and hot, with a high near 100. Heat index values as high as 103. South wind around 5 mph.
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.
Wednesday Night
A 50 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 73. South wind around 5 mph.
Thursday
Showers likely and possibly a thunderstorm before 1pm, then a slight chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 92. North wind around 5 mph becoming south in the morning. Chance of precipitation is 60%.
Thursday Night
A 30 percent chance of showers, mainly after 1am. Partly cloudy, with a low around 69. Northeast wind around 5 mph becoming southeast after midnight.
Friday
A 40 percent chance of showers before 1pm. Mostly sunny, with a high near 93. South wind 5 to 10 mph.
Friday Night
Mostly clear, with a low around 70. South wind around 5 mph.
Saturday
Sunny, with a high near 95. South wind 5 to 10 mph, with gusts as high as 20 mph.
Saturday Night
A 20 percent chance of showers. Mostly clear, with a low around 70. South wind around 10 mph.
Sunday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 92. South wind 10 to 15 mph, with gusts as high as 20 mph.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
Siloam Springs AR
 36.19°N 94.53°W
10:50 pm CDT Sep 6, 2026
11pm CDT Sep 6, 2026-6pm CDT Sep 13, 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