Notice of NWS' New Version of Forecast
A new version of Forecast is coming soon!
Click here to visit the new site for details.

Severe Thunderstorms for the Midwest, Monsoon in the Southwest, Heat Continues in Southern and Central U.S on Wednesday

Strong to severe thunderstorms will be possible Wednesday in portions of the Midwest. Heavy rain, hail and damaging winds will all be possible, but a tornado cannot be ruled out either. The monsoonal flash flood threat remains in the Desert Southwest and Southern Rockies. Hot temperatures continue in the Southern Plains and Mississippi Valley. Heat Advisories are in effect. Read More >

Current conditions at

St. Louis Regional Airport (KALN)

Lat: 38.89°NLon: 90.03°WElev: 518ft.

Overcast

90°F

32°C

Humidity 67%
Wind Speed W 9 mph
Barometer 30.02 in
Dewpoint 77°F (25°C)
Visibility 10.00 mi
Heat Index104°F (40°C)
Last update 26 Jul 1:50 pm CDT
Extended Forecast for

West Alton MO

Heat Advisory until July 26, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory until July 26, 08:00pm

    NOW until
    8:00pm Wed

    Heat Advisory

  • This
    Afternoon

    This Afternoon: Isolated showers and thunderstorms after 3pm.  Partly sunny, with a high near 96. Heat index values as high as 106. Southwest wind around 7 mph.  Chance of precipitation is 20%.

    Isolated
    T-storms

    High: 96 °F

  • Tonight

    Tonight: Showers and thunderstorms likely, mainly after 1am.  Mostly cloudy, with a low around 76. South wind around 6 mph.  Chance of precipitation is 60%.

    Scattered
    T-storms then
    T-storms
    Likely

    Low: 76 °F

  • Thursday

    Thursday: Showers likely and possibly a thunderstorm before 10am, then scattered showers and thunderstorms after 10am.  Mostly cloudy, with a high near 86. Southwest wind 6 to 8 mph.  Chance of precipitation is 60%.

    Showers
    Likely then
    Scattered
    T-storms

    High: 86 °F

  • Thursday
    Night

    Thursday Night: A 30 percent chance of showers and thunderstorms before 1am.  Mostly cloudy, with a low around 69. North wind around 6 mph.

    Chance
    T-storms

    Low: 69 °F

  • Friday

    Friday: Mostly sunny, with a high near 85. North wind 6 to 9 mph.

    Mostly Sunny

    High: 85 °F

  • Friday
    Night

    Friday Night: Mostly clear, with a low around 63.

    Mostly Clear

    Low: 63 °F

  • Saturday

    Saturday: Sunny, with a high near 83.

    Sunny

    High: 83 °F

  • Saturday
    Night

    Saturday Night: Mostly clear, with a low around 61.

    Mostly Clear

    Low: 61 °F

Detailed Forecast

This Afternoon
Isolated showers and thunderstorms after 3pm. Partly sunny, with a high near 96. Heat index values as high as 106. Southwest wind around 7 mph. Chance of precipitation is 20%.
Tonight
Showers and thunderstorms likely, mainly after 1am. Mostly cloudy, with a low around 76. South wind around 6 mph. Chance of precipitation is 60%.
Thursday
Showers likely and possibly a thunderstorm before 10am, then scattered showers and thunderstorms after 10am. Mostly cloudy, with a high near 86. Southwest wind 6 to 8 mph. Chance of precipitation is 60%.
Thursday Night
A 30 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 69. North wind around 6 mph.
Friday
Mostly sunny, with a high near 85. North wind 6 to 9 mph.
Friday Night
Mostly clear, with a low around 63.
Saturday
Sunny, with a high near 83.
Saturday Night
Mostly clear, with a low around 61.
Sunday
Sunny, with a high near 84.
Sunday Night
Mostly clear, with a low around 63.
Monday
Sunny, with a high near 87.
Monday Night
Mostly clear, with a low around 66.
Tuesday
Mostly sunny, with a high near 88.
Click Map For Forecast
Point Forecast:
West Alton MO
 38.86°N 90.22°W (Elev. 427 ft)
12:57 pm CDT Jul 26, 2017
2pm CDT Jul 26, 2017-6pm CDT Aug 1, 2017
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database