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

Washington Regional Airport (KFYG)

Lat: 38.59°NLon: 90.99°WElev: 489ft.

Fair

82°F

28°C

Humidity 84%
Wind Speed Calm
Barometer 30.25 in
Dewpoint 77°F (25°C)
Visibility 10.00 mi
Heat Index90°F (32°C)
Last update 16 Sep 10:15 am CDT
Extended Forecast for

Gray Summit MO

Heat Advisory September 16, 10:19am until September 18, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory September 16, 10:19am until September 18, 08:00pm

    NOW until 8:00pm Fri

    Heat Advisory

  • Today

    High: 93 °F

    Mostly Sunny
    then Chance
    T-storms

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms, mainly before 7pm.  Mostly cloudy during the early evening, then becoming mostly clear, with a low around 74. Calm wind.

    Low: 74 °F

    Chance
    T-storms then
    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 96. Heat index values as high as 107. Light and variable wind.

    High: 96 °F

    Sunny

  • Thursday Night

    Thursday Night: A 20 percent chance of showers and thunderstorms before 1am.  Partly cloudy, with a low around 71. Calm wind.

    Low: 71 °F

    Slight Chance
    T-storms

  • Friday

    Friday: Mostly sunny, with a high near 95. Calm wind.

    High: 95 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 71.

    Low: 71 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 96.

    High: 96 °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

    Mostly Cloudy
    then Chance
    Showers

Detailed Forecast

Today
A 50 percent chance of showers and thunderstorms, mainly after 3pm. Mostly sunny, with a high near 93. Heat index values as high as 105. Calm wind.
Tonight
A 30 percent chance of showers and thunderstorms, mainly before 7pm. Mostly cloudy during the early evening, then becoming mostly clear, with a low around 74. Calm wind.
Thursday
Sunny, with a high near 96. Heat index values as high as 107. Light and variable wind.
Thursday Night
A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 71. Calm wind.
Friday
Mostly sunny, with a high near 95. Calm wind.
Friday Night
Partly cloudy, with a low around 71.
Saturday
Mostly sunny, with a high near 96.
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 92.
Sunday Night
A slight chance of showers, then a chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 66. Chance of precipitation is 30%.
Monday
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 84.
Monday Night
A 30 percent chance of showers. Partly cloudy, with a low around 62.
Tuesday
A 20 percent chance of showers. Mostly sunny, with a high near 81.
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ABOUT THIS FORECAST

 
Point Forecast:
Gray Summit MO
 38.48°N 90.81°W (Elev. 574 ft)
8:51 am CDT Sep 16, 2026
10am CDT Sep 16, 2026-6pm CDT Sep 22, 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