Heavy Rainfall and Severe Thunderstorm Threats; Heat Risk Expands; Monitoring the Tropics

Flash flooding risks continue for portions of the Four Corners and Great Basin through today. Severe thunderstorms are outlooked from the eastern Great Lakes, southern New England into the mid-Atlantic through Tuesday. Heat risk increases and expands across the center of the nation and across the Ohio Valley and mid-Atlantic this week. Continue to closely monitor tropical development in the Gulf. Read More >

Current conditions at

Washington Regional Airport (KFYG)

Lat: 38.59°NLon: 90.99°WElev: 489ft.

Fair

99°F

37°C

Humidity 39%
Wind Speed S 6 mph
Barometer 29.96 in
Dewpoint 70°F (21°C)
Visibility 9.00 mi
Heat Index106°F (41°C)
Last update 31 Aug 4:55 pm CDT
Extended Forecast for

Foristell MO

Heat Advisory August 31, 05:17pm until September 4, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory August 31, 05:17pm until September 4, 08:00pm

    NOW until 8:00pm Fri

    Heat Advisory

  • Tonight

    Low: 76 °F

    Clear

  • Tuesday

    Tuesday: Sunny and hot, with a high near 97. Heat index values as high as 100. Southwest wind around 6 mph becoming calm  in the afternoon.

    High: 97 °F

    Hot

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 77. Calm wind becoming south around 6 mph after midnight.

    Low: 77 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny and hot, with a high near 97. Heat index values as high as 102. Southwest wind 3 to 7 mph.

    High: 97 °F

    Hot

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 77. Calm wind becoming south around 5 mph after midnight.

    Low: 77 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny and hot, with a high near 97.

    High: 97 °F

    Hot

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 77.

    Low: 77 °F

    Mostly Clear

  • Friday

    Friday: Sunny and hot, with a high near 97.

    High: 97 °F

    Hot

Detailed Forecast

Tonight
Clear, with a low around 76. Calm wind becoming south around 6 mph in the evening.
Tuesday
Sunny and hot, with a high near 97. Heat index values as high as 100. Southwest wind around 6 mph becoming calm in the afternoon.
Tuesday Night
Mostly clear, with a low around 77. Calm wind becoming south around 6 mph after midnight.
Wednesday
Sunny and hot, with a high near 97. Heat index values as high as 102. Southwest wind 3 to 7 mph.
Wednesday Night
Mostly clear, with a low around 77. Calm wind becoming south around 5 mph after midnight.
Thursday
Sunny and hot, with a high near 97.
Thursday Night
Mostly clear, with a low around 77.
Friday
Sunny and hot, with a high near 97.
Friday Night
Mostly clear, with a low around 76.
Saturday
Mostly sunny, with a high near 95.
Saturday Night
Partly cloudy, with a low around 73.
Sunday
Mostly sunny, with a high near 91.
Sunday Night
Partly cloudy, with a low around 69.
Labor Day
Mostly sunny, with a high near 90.
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ABOUT THIS FORECAST

 
Point Forecast:
Foristell MO
 38.82°N 90.96°W (Elev. 699 ft)
4:26 pm CDT Aug 31, 2026
5pm CDT Aug 31, 2026-6pm CDT Sep 7, 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