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

Dangerous Heat and Heavy Rainfall into the Weekend

Hot temperatures and high humidity are forecast to continue across the mid-Mississippi Valley into this weekend. Heat Advisories remain in effect. Heavy to excessive rainfall occurring at times through the weekend could bring areas of flooding to parts of the northern Rockies, upper Midwest, central Great Lakes, and southern New England. Read More >

Hazardous Weather Conditions

Current conditions at

SULLIVAN (KUUV)

Lat: 38.23°NLon: 91.16°WElev: 933ft.

Fair

N/A

Humidity NA
Wind Speed S 6 mph
Barometer 30.05 in
Dewpoint N/A
Visibility 10.00 mi
Last update 18 Sep 11:15 pm CDT
Extended Forecast for

Viburnum MO

Heat Advisory September 18, 11:22pm until September 19, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory September 18, 11:22pm until September 19, 08:00pm

    NOW until 8:00pm Sat

    Heat Advisory

  • Tonight

    Low: 71 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny and hot, with a high near 97. Southwest wind 3 to 6 mph.

    High: 97 °F

    Hot

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 72. Light south wind.

    Low: 72 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 95. West wind 3 to 5 mph.

    High: 95 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: A 50 percent chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 67. Calm wind.

    Low: 67 °F

    Slight Chance
    T-storms then
    Chance
    T-storms

  • Monday

    Monday: A chance of showers and thunderstorms before 7am, then a chance of showers between 7am and 1pm, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 83. Chance of precipitation is 70%.

    High: 83 °F

    Chance
    Showers then
    Showers
    Likely

  • Monday Night

    Monday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 59. Chance of precipitation is 30%.

    Low: 59 °F

    Chance
    Showers

  • Tuesday

    Tuesday: A 20 percent chance of showers before 1pm. Partly sunny, with a high near 73.

    High: 73 °F

    Slight Chance
    Showers

Detailed Forecast

Tonight
Partly cloudy, with a low around 71. Calm wind becoming southwest around 6 mph after midnight.
Saturday
Mostly sunny and hot, with a high near 97. Southwest wind 3 to 6 mph.
Saturday Night
Partly cloudy, with a low around 72. Light south wind.
Sunday
Mostly sunny, with a high near 95. West wind 3 to 5 mph.
Sunday Night
A 50 percent chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 67. Calm wind.
Monday
A chance of showers and thunderstorms before 7am, then a chance of showers between 7am and 1pm, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 83. Chance of precipitation is 70%.
Monday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 59. Chance of precipitation is 30%.
Tuesday
A 20 percent chance of showers before 1pm. Partly sunny, with a high near 73.
Tuesday Night
Partly cloudy, with a low around 53.
Wednesday
Mostly sunny, with a high near 74.
Wednesday Night
Partly cloudy, with a low around 53.
Thursday
Mostly sunny, with a high near 75.
Thursday Night
Partly cloudy, with a low around 55.
Friday
Mostly sunny, with a high near 75.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Viburnum MO
 37.71°N 91.12°W (Elev. 1201 ft)
Last Update:
9:26 pm CDT Sep 18, 2026
Forecast Valid:
11pm CDT Sep 18, 2026-6pm CDT Sep 25, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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