Areas of Dangerous Heat and Heavy Rain with Possible Flooding into this Weekend

Hot temperatures and high humidity are forecast to continue across much of northeast Texas into the mid-Mississippi Valley into this weekend with heat advisories in effect. Heavy to excessive rainfall occurring at times through Saturday could bring areas of flooding across parts of the central Plains into the upper Midwest/Great Lakes, and Four Corners states. Read More >

Current conditions at

Fort Smith Regional Airport (KFSM)

Lat: 35.33°NLon: 94.37°WElev: 436ft.

Fair

79°F

26°C

Humidity 82%
Wind Speed NE 3 mph
Barometer 30.19 in (1021.6 mb)
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Heat Index82°F (28°C)
Last update 17 Sep 4:53 am CDT
Extended Forecast for

3 Miles S Diamond Grove AR

Heat Advisory September 17, 12:00pm until September 17, 07:00pm
Click here for hazard details and duration
Heat Advisory
  • Today

    Today: A 20 percent chance of showers and thunderstorms after 1pm.  Sunny, with a high near 99. Heat index values as high as 104. Southeast wind around 5 mph becoming calm.

    High: 99 °F

    Sunny then
    Slight Chance
    T-storms

  • Tonight

    Tonight: Mostly clear, with a low around 74. Southeast wind around 5 mph becoming calm  in the evening.

    Low: 74 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 99. Calm wind becoming south around 5 mph in the afternoon.

    High: 99 °F

    Sunny

  • Friday Night

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

    Low: 72 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 99. Light south wind becoming southwest 5 to 10 mph in the afternoon.

    High: 99 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 73. South wind around 5 mph.

    Low: 73 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 99. Calm wind becoming southwest around 5 mph in the afternoon.

    High: 99 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 73. South wind around 5 mph becoming calm  in the evening.

    Low: 73 °F

    Partly Cloudy

  • Monday

    Monday: A 20 percent chance of showers and thunderstorms after 1pm.  Partly sunny, with a high near 95. Calm wind becoming west around 5 mph in the afternoon.

    High: 95 °F

    Partly Sunny
    then Slight
    Chance
    T-storms

Detailed Forecast

Today
A 20 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 99. Heat index values as high as 104. Southeast wind around 5 mph becoming calm.
Tonight
Mostly clear, with a low around 74. Southeast wind around 5 mph becoming calm in the evening.
Friday
Sunny, with a high near 99. Calm wind becoming south around 5 mph in the afternoon.
Friday Night
Mostly clear, with a low around 72. South wind around 5 mph becoming calm after midnight.
Saturday
Sunny, with a high near 99. Light south wind becoming southwest 5 to 10 mph in the afternoon.
Saturday Night
Mostly clear, with a low around 73. South wind around 5 mph.
Sunday
Sunny, with a high near 99. Calm wind becoming southwest around 5 mph in the afternoon.
Sunday Night
Partly cloudy, with a low around 73. South wind around 5 mph becoming calm in the evening.
Monday
A 20 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 95. Calm wind becoming west around 5 mph in the afternoon.
Monday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 70. North wind around 5 mph becoming calm in the evening. Chance of precipitation is 20%.
Tuesday
A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 92. Northeast wind around 5 mph.
Tuesday Night
Partly cloudy, with a low around 68. East wind around 5 mph.
Wednesday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 92. East wind around 5 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles S Diamond Grove AR
 35.27°N 94.2°W
2:50 am CDT Sep 17, 2026
5am CDT Sep 17, 2026-6pm CDT Sep 23, 2026
 
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Additional Resources

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Hourly Weather Forecast

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