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

Hazardous Weather Conditions

Current conditions at

Northwest Arkansas Regional Airport (KXNA)

Lat: 36.29°NLon: 94.31°WElev: 1266ft.

Fair

88°F

31°C

Humidity 54%
Wind Speed SW 7 mph
Barometer 30.30 in (1024.1 mb)
Dewpoint 69°F (21°C)
Visibility 10.00 mi
Heat Index93°F (34°C)
Last update 17 Sep 9:53 am CDT
Extended Forecast for

South West City MO

Heat Advisory September 17, 10:31am until September 19, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory September 17, 10:31am until September 19, 08:00pm

    NOW until 8:00pm Sat

    Heat Advisory

  • Today

    High: 99 °F

    Sunny then
    Slight Chance
    T-storms

  • Tonight

    Tonight: Mostly clear, with a low around 75. South wind 3 to 5 mph.

    Low: 75 °F

    Mostly Clear

  • Friday

    Friday: Sunny and hot, with a high near 100. Heat index values as high as 103. Light south wind increasing to 5 to 9 mph in the morning.

    High: 100 °F

    Hot

  • Friday Night

    Friday Night: Mostly clear, with a low around 73. South wind 3 to 5 mph.

    Low: 73 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny and hot, with a high near 99. Southwest wind 7 to 13 mph, with gusts as high as 20 mph.

    High: 99 °F

    Hot

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 73.

    Low: 73 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny and hot, with a high near 98.

    High: 98 °F

    Hot

  • Sunday Night

    Sunday Night: A chance of showers, with thunderstorms also possible after 1am. Mostly cloudy, with a low around 69.

    Low: 69 °F

    Chance
    Showers then
    Chance
    T-storms

Detailed Forecast

Today
A slight chance of showers between 2pm and 4pm, then a slight chance of showers and thunderstorms after 4pm. Sunny and hot, with a high near 99. Heat index values as high as 104. Southwest wind 3 to 7 mph. Chance of precipitation is 20%.
Tonight
Mostly clear, with a low around 75. South wind 3 to 5 mph.
Friday
Sunny and hot, with a high near 100. Heat index values as high as 103. Light south wind increasing to 5 to 9 mph in the morning.
Friday Night
Mostly clear, with a low around 73. South wind 3 to 5 mph.
Saturday
Sunny and hot, with a high near 99. Southwest wind 7 to 13 mph, with gusts as high as 20 mph.
Saturday Night
Mostly clear, with a low around 73.
Sunday
Mostly sunny and hot, with a high near 98.
Sunday Night
A chance of showers, with thunderstorms also possible after 1am. Mostly cloudy, with a low around 69.
Monday
A chance of showers after 1pm. Partly sunny, with a high near 88.
Monday Night
A chance of showers before 1am. Partly cloudy, with a low around 64.
Tuesday
Partly sunny, with a high near 86.
Tuesday Night
Partly cloudy, with a low around 63.
Wednesday
Mostly sunny, with a high near 88.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
South West City MO
 36.52°N 94.61°W (Elev. 922 ft)
Last Update:
10:26 am CDT Sep 17, 2026
Forecast Valid:
10am CDT Sep 17, 2026-6pm CDT Sep 23, 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