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 and Heavy Rain in Upper Midwest

A slow moving frontal boundary from the central Pains to the Upper Midwest will bring a potential for severe thunderstorms and heavy rain. Rain amounts of 1-3 inches, with locally heavier amounts can be expected. The threat of severe weather moves into the Ohio Valley and Northeast on Tuesday. Monsoon moisture continues to bring the threat of flash flooding to the Southwest and southern Rockies. Read More >

Current conditions at

St. Louis Lambert International Airport (KSTL)

Lat: 38.75°NLon: 90.37°WElev: 604ft.

A Few Clouds

79°F

26°C

Humidity 85%
Wind Speed S 6 mph
Barometer 30.06 in (1016.4 mb)
Dewpoint 74°F (23°C)
Visibility 10.00 mi
Heat Index83°F (28°C)
Last update 21 Aug 2:51 am CDT
Extended Forecast for

2 Miles SSW Saint Charles MO

  • Overnight

    Overnight: Partly cloudy, with a low around 74. South wind around 5 mph.

    Partly Cloudy

    Low: 74 °F

  • Monday

    Monday: A 30 percent chance of showers and thunderstorms, mainly after 3pm.  Mostly sunny, with a high near 90. Southwest wind 3 to 6 mph.

    Chance
    T-storms

    High: 90 °F

  • Monday
    Night

    Monday Night: A 50 percent chance of showers and thunderstorms, mainly after 1am.  Mostly cloudy, with a low around 73. South wind around 6 mph.

    Chance
    T-storms

    Low: 73 °F

  • Tuesday

    Tuesday: Showers and thunderstorms likely, mainly before 1pm.  Cloudy, with a high near 83. West wind 5 to 8 mph.  Chance of precipitation is 70%.

    T-storms
    Likely

    High: 83 °F

  • Tuesday
    Night

    Tuesday Night: Partly cloudy, with a low around 63. North wind 5 to 7 mph.

    Partly Cloudy

    Low: 63 °F

  • Wednesday

    Wednesday: Sunny, with a high near 81.

    Sunny

    High: 81 °F

  • Wednesday
    Night

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

    Mostly Clear

    Low: 61 °F

  • Thursday

    Thursday: Sunny, with a high near 80.

    Sunny

    High: 80 °F

  • Thursday
    Night

    Thursday Night: Mostly clear, with a low around 62.

    Mostly Clear

    Low: 62 °F

Detailed Forecast

Overnight
Partly cloudy, with a low around 74. South wind around 5 mph.
Monday
A 30 percent chance of showers and thunderstorms, mainly after 3pm. Mostly sunny, with a high near 90. Southwest wind 3 to 6 mph.
Monday Night
A 50 percent chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 73. South wind around 6 mph.
Tuesday
Showers and thunderstorms likely, mainly before 1pm. Cloudy, with a high near 83. West wind 5 to 8 mph. Chance of precipitation is 70%.
Tuesday Night
Partly cloudy, with a low around 63. North wind 5 to 7 mph.
Wednesday
Sunny, with a high near 81.
Wednesday Night
Mostly clear, with a low around 61.
Thursday
Sunny, with a high near 80.
Thursday Night
Mostly clear, with a low around 62.
Friday
Mostly sunny, with a high near 81.
Friday Night
Partly cloudy, with a low around 64.
Saturday
Mostly sunny, with a high near 82.
Saturday Night
Partly cloudy, with a low around 66.
Sunday
Mostly sunny, with a high near 83.
Click Map For Forecast
Point Forecast:
2 Miles SSW Saint Charles MO
 38.76°N 90.54°W (Elev. 597 ft)
12:56 am CDT Aug 21, 2017
3am CDT Aug 21, 2017-6pm CDT Aug 27, 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