On July 7, 2015, NWS implemented changes to the icons depicted on all of its point-forecast pages. Changes include new icon images with increased clarity, 6-hour increments for rapidly changing weather and new color blocks to highlight forecast hazards.

A page depicting all of the new icon images can be accessed here: www.weather.gov/forecast-icons

Changes to the icons were based on analysis of 6,700 public comments collected in 2014. Also, many of these changes are based on the results of a research project led by the National Center for Atmospheric Research.

Users are encouraged to continue to provide comments regarding these changes via email at icons@noaa.gov. NWS will continue to analyze incoming feedback and refine the icons as necessary. Any substantial change to the icons will be facilitated through the NWS public comment/review process.

Showers and thunderstorms possible across parts of Midwest

Showers and thunderstorms are expected across parts of the Midwest and central Plains on Thursday. As much as three inches of rain could fall in some areas, which could lead to flash flooding. Showers and thunderstorms are also possible across parts of the Southeast.
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Current conditions at

St. Louis, Lambert-St. Louis International Airport (KSTL)

Lat: 38.75°NLon: 90.37°WElev: 604ft.

Mostly Cloudy

79°F

26°C

Humidity 44%
Wind Speed W 5 mph
Barometer 30.15 in (1020.3 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 27 Aug 1:51 pm CDT
Extended Forecast for

Saint Charles MO

  • This
    Afternoon

    This Afternoon: Mostly sunny, with a high near 82. Light and variable wind.

    Mostly Sunny

    High: 82 °F

  • Tonight

    Tonight: Mostly clear, with a low around 62. Southeast wind 3 to 6 mph.

    Mostly Clear

    Low: 62 °F

  • Friday

    Friday: Mostly sunny, with a high near 84. South wind 5 to 9 mph.

    Mostly Sunny

    High: 84 °F

  • Friday
    Night

    Friday Night: A 20 percent chance of showers and thunderstorms.  Mostly cloudy, with a low around 67. South wind 6 to 8 mph.

    Slight Chance
    T-storms

    Low: 67 °F

  • Saturday

    Saturday: A 20 percent chance of showers and thunderstorms.  Partly sunny, with a high near 86. Southwest wind 7 to 9 mph.

    Slight Chance
    T-storms

    High: 86 °F

  • Saturday
    Night

    Saturday Night: Partly cloudy, with a low around 67.

    Partly Cloudy

    Low: 67 °F

  • Sunday

    Sunday: Mostly sunny, with a high near 86.

    Mostly Sunny

    High: 86 °F

  • Sunday
    Night

    Sunday Night: Mostly clear, with a low around 67.

    Mostly Clear

    Low: 67 °F

  • Monday

    Monday: Sunny, with a high near 89.

    Sunny

    High: 89 °F

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 82. Light and variable wind.
Tonight
Mostly clear, with a low around 62. Southeast wind 3 to 6 mph.
Friday
Mostly sunny, with a high near 84. South wind 5 to 9 mph.
Friday Night
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 67. South wind 6 to 8 mph.
Saturday
A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 86. Southwest wind 7 to 9 mph.
Saturday Night
Partly cloudy, with a low around 67.
Sunday
Mostly sunny, with a high near 86.
Sunday Night
Mostly clear, with a low around 67.
Monday
Sunny, with a high near 89.
Monday Night
Partly cloudy, with a low around 69.
Tuesday
Mostly sunny, with a high near 89.
Tuesday Night
Partly cloudy, with a low around 69.
Wednesday
Mostly sunny, with a high near 88.
  Click Map For Forecast
Point Forecast:
Saint Charles MO
 38.78°N 90.51°W (Elev. 597 ft)
1:25 pm CDT Aug 27, 2015
2pm CDT Aug 27, 2015-6pm CDT Sep 2, 2015
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Graph

National Digital Forecast Database