Heavy to Excessive Rains in The Four Corners Region and Midwest; Heat Persists in the South-Central U.S.

Repeated rounds of showers and thunderstorms could bring a flash flooding threat across the Four Corners region and from the mid-Mississippi Valley into the lower Great Lakes. Hot temperatures and high humidity will continue to challenge daily records from the Southern Plains to the lower Mississippi Valley. Read More >

Current conditions at

St. Louis, Spirit Of St. Louis Airport (KSUS)

Lat: 38.66°NLon: 90.66°WElev: 463ft.

Fair

86°F

30°C

Humidity 61%
Wind Speed SE 3 mph
Barometer 30.19 in (1021.3 mb)
Dewpoint 71°F (22°C)
Visibility 10.00 mi
Heat Index91°F (33°C)
Last update 16 Sep 5:54 pm CDT
Extended Forecast for

Pacific MO

Heat Advisory September 16, 06:20pm until September 19, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory September 16, 06:20pm until September 19, 08:00pm

    NOW until 8:00pm Sat

    Heat Advisory

  • Tonight

    Low: 72 °F

    Chance
    T-storms then
    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 96. Heat index values as high as 107. Calm wind becoming west around 6 mph.

    High: 96 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 71. South wind around 5 mph becoming calm  in the evening.

    Low: 71 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 95. Heat index values as high as 106. Calm wind.

    High: 95 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 71. Calm wind.

    Low: 71 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 95.

    High: 95 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A 30 percent chance of showers and thunderstorms after 1am.  Partly cloudy, with a low around 70.

    Low: 70 °F

    Partly Cloudy
    then Chance
    Showers

  • Sunday

    Sunday: A 20 percent chance of showers.  Mostly sunny, with a high near 91.

    High: 91 °F

    Slight Chance
    Showers

Detailed Forecast

Tonight
A 40 percent chance of showers and thunderstorms, mainly before 8pm. Cloudy during the early evening, then gradual clearing, with a low around 72. Calm wind.
Thursday
Sunny, with a high near 96. Heat index values as high as 107. Calm wind becoming west around 6 mph.
Thursday Night
Clear, with a low around 71. South wind around 5 mph becoming calm in the evening.
Friday
Sunny, with a high near 95. Heat index values as high as 106. Calm wind.
Friday Night
Mostly clear, with a low around 71. Calm wind.
Saturday
Mostly sunny, with a high near 95.
Saturday Night
A 30 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 70.
Sunday
A 20 percent chance of showers. Mostly sunny, with a high near 91.
Sunday Night
A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 66. Chance of precipitation is 20%.
Monday
A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 86. Chance of precipitation is 30%.
Monday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 63.
Tuesday
A 20 percent chance of showers. Mostly sunny, with a high near 81.
Tuesday Night
Partly cloudy, with a low around 60.
Wednesday
Mostly sunny, with a high near 81.
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ABOUT THIS FORECAST

 
Point Forecast:
Pacific MO
 38.48°N 90.75°W (Elev. 486 ft)
6:06 pm CDT Sep 16, 2026
6pm CDT Sep 16, 2026-6pm CDT Sep 23, 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