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

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 >

Hazardous Weather Conditions

Current conditions at

SULLIVAN (KUUV)

Lat: 38.23°NLon: 91.16°WElev: 933ft.

Mostly Cloudy

N/A

Humidity NA
Wind Speed S 5 mph
Barometer 30.25 in
Dewpoint N/A
Visibility 10.00 mi
Last update 17 Sep 12:55 am CDT
Extended Forecast for

3 Miles SSE Leasburg MO

Heat Advisory September 17, 01:24am until September 19, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory September 17, 01:24am until September 19, 08:00pm

    NOW until 8:00pm Sat

    Heat Advisory

  • Overnight

    Low: 72 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 95. Heat index values as high as 105. Southwest wind 5 to 7 mph becoming light and variable in the afternoon.

    High: 95 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 71. Light and variable wind.

    Low: 71 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 95. Heat index values as high as 104. Calm wind becoming west around 5 mph.

    High: 95 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 70. Calm wind.

    Low: 70 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 95.

    High: 95 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 69.

    Low: 69 °F

    Partly Cloudy

  • Sunday

    Sunday: A 20 percent chance of showers. Mostly sunny, with a high near 92.

    High: 92 °F

    Slight Chance
    Showers

Detailed Forecast

Overnight
Mostly clear, with a low around 72. South wind 3 to 5 mph.
Thursday
Sunny, with a high near 95. Heat index values as high as 105. Southwest wind 5 to 7 mph becoming light and variable in the afternoon.
Thursday Night
Mostly clear, with a low around 71. Light and variable wind.
Friday
Sunny, with a high near 95. Heat index values as high as 104. Calm wind becoming west around 5 mph.
Friday Night
Mostly clear, with a low around 70. Calm wind.
Saturday
Sunny, with a high near 95.
Saturday Night
Partly cloudy, with a low around 69.
Sunday
A 20 percent chance of showers. Mostly sunny, with a high near 92.
Sunday Night
A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 66.
Monday
A 40 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 86.
Monday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 62.
Tuesday
A 20 percent chance of showers. Mostly sunny, with a high near 80.
Tuesday Night
A 20 percent chance of showers. Partly cloudy, with a low around 60.
Wednesday
A 20 percent chance of showers. Mostly sunny, with a high near 81.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SSE Leasburg MO
 38.07°N 91.27°W (Elev. 797 ft)
Last Update:
10:46 pm CDT Sep 16, 2026
Forecast Valid:
1am CDT Sep 17, 2026-6pm CDT Sep 23, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation