Heat Persists in the Southwest; Elevated to Critical Fire Weather in the Great Basin; Poor Air Quality in the West

Dangerous heat will persist across the Southwest U.S. through this week, easing by next week. The heat will focus further east in the Great Plains and Mississippi Valley beginning next week. Elevated to locally critical fire weather conditions will persist for the Great Basin today. Poor air quality lingers for the Northwest, Great Basin, Central Rockies into the Plains. Read More >

Current conditions at

SULLIVAN (KUUV)

Lat: 38.23°NLon: 91.16°WElev: 933ft.

Fair

N/A

Humidity NA
Wind Speed S 5 mph
Barometer 30.08 in
Dewpoint N/A
Visibility 10.00 mi
Last update 4 Aug 10:15 am CDT
Extended Forecast for

11 Miles WNW Potosi MO

  • Today

    Today: Sunny, with a high near 87. South wind around 5 mph becoming calm  in the afternoon.

    High: 87 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 68. Light southeast wind.

    Low: 68 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 90. South wind 3 to 5 mph.

    High: 90 °F

    Sunny

  • Wednesday Night

    Wednesday Night: A 50 percent chance of showers and thunderstorms after 1am.  Mostly cloudy, with a low around 70. Light south wind.

    Low: 70 °F

    Partly Cloudy
    then Chance
    T-storms

  • Thursday

    Thursday: Showers likely and possibly a thunderstorm before 1pm.  Partly sunny, with a high near 87. Light south wind.  Chance of precipitation is 70%.

    High: 87 °F

    Showers
    Likely

  • Thursday Night

    Thursday Night: A 50 percent chance of showers and thunderstorms.  Mostly cloudy, with a low around 70.

    Low: 70 °F

    Chance
    T-storms

  • Friday

    Friday: A 50 percent chance of showers and thunderstorms, mainly after 1pm.  Partly sunny, with a high near 86.

    High: 86 °F

    Slight Chance
    T-storms then
    Chance
    T-storms

  • Friday Night

    Friday Night: A 30 percent chance of showers and thunderstorms, mainly after 1am.  Mostly cloudy, with a low around 69.

    Low: 69 °F

    Chance
    T-storms

  • Saturday

    Saturday: A 20 percent chance of showers and thunderstorms.  Mostly sunny, with a high near 88.

    High: 88 °F

    Slight Chance
    T-storms

Detailed Forecast

Today
Sunny, with a high near 87. South wind around 5 mph becoming calm in the afternoon.
Tonight
Mostly clear, with a low around 68. Light southeast wind.
Wednesday
Sunny, with a high near 90. South wind 3 to 5 mph.
Wednesday Night
A 50 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 70. Light south wind.
Thursday
Showers likely and possibly a thunderstorm before 1pm. Partly sunny, with a high near 87. Light south wind. Chance of precipitation is 70%.
Thursday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 70.
Friday
A 50 percent chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 86.
Friday Night
A 30 percent chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 69.
Saturday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 88.
Saturday Night
Mostly clear, with a low around 71.
Sunday
Sunny, with a high near 90.
Sunday Night
Mostly clear, with a low around 72.
Monday
Sunny, with a high near 92.
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ABOUT THIS FORECAST

 
Point Forecast:
11 Miles WNW Potosi MO
 37.97°N 90.97°W (Elev. 1001 ft)
9:01 am CDT Aug 4, 2026
10am CDT Aug 4, 2026-6pm CDT Aug 10, 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